--- /dev/null
+/*******************************************************************************
+ * Copyright (c) 2000, 2019 IBM Corporation and others.
+ *
+ * This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License 2.0
+ * which accompanies this distribution, and is available at
+ * https://www.eclipse.org/legal/epl-2.0/
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ *
+ * Contributors:
+ * IBM Corporation - initial API and implementation
+ *******************************************************************************/
+package org.eclipse.swt.widgets;
+
+import java.net.*;
+import java.util.*;
+import java.util.function.*;
+
+import org.eclipse.swt.*;
+import org.eclipse.swt.graphics.*;
+import org.eclipse.swt.internal.*;
+import org.eclipse.swt.internal.ole.win32.*;
+import org.eclipse.swt.internal.win32.*;
+
+/**
+ * Instances of this class are responsible for managing the
+ * connection between SWT and the underlying operating
+ * system. Their most important function is to implement
+ * the SWT event loop in terms of the platform event model.
+ * They also provide various methods for accessing information
+ * about the operating system, and have overall control over
+ * the operating system resources which SWT allocates.
+ * <p>
+ * Applications which are built with SWT will <em>almost always</em>
+ * require only a single display. In particular, some platforms
+ * which SWT supports will not allow more than one <em>active</em>
+ * display. In other words, some platforms do not support
+ * creating a new display if one already exists that has not been
+ * sent the <code>dispose()</code> message.
+ * <p>
+ * In SWT, the thread which creates a <code>Display</code>
+ * instance is distinguished as the <em>user-interface thread</em>
+ * for that display.
+ * </p>
+ * The user-interface thread for a particular display has the
+ * following special attributes:
+ * <ul>
+ * <li>
+ * The event loop for that display must be run from the thread.
+ * </li>
+ * <li>
+ * Some SWT API methods (notably, most of the public methods in
+ * <code>Widget</code> and its subclasses), may only be called
+ * from the thread. (To support multi-threaded user-interface
+ * applications, class <code>Display</code> provides inter-thread
+ * communication methods which allow threads other than the
+ * user-interface thread to request that it perform operations
+ * on their behalf.)
+ * </li>
+ * <li>
+ * The thread is not allowed to construct other
+ * <code>Display</code>s until that display has been disposed.
+ * (Note that, this is in addition to the restriction mentioned
+ * above concerning platform support for multiple displays. Thus,
+ * the only way to have multiple simultaneously active displays,
+ * even on platforms which support it, is to have multiple threads.)
+ * </li>
+ * </ul>
+ * <p>
+ * Enforcing these attributes allows SWT to be implemented directly
+ * on the underlying operating system's event model. This has
+ * numerous benefits including smaller footprint, better use of
+ * resources, safer memory management, clearer program logic,
+ * better performance, and fewer overall operating system threads
+ * required. The down side however, is that care must be taken
+ * (only) when constructing multi-threaded applications to use the
+ * inter-thread communication mechanisms which this class provides
+ * when required.
+ * </p><p>
+ * All SWT API methods which may only be called from the user-interface
+ * thread are distinguished in their documentation by indicating that
+ * they throw the "<code>ERROR_THREAD_INVALID_ACCESS</code>"
+ * SWT exception.
+ * </p>
+ * <dl>
+ * <dt><b>Styles:</b></dt>
+ * <dd>(none)</dd>
+ * <dt><b>Events:</b></dt>
+ * <dd>Close, Dispose, OpenDocument, Settings, Skin</dd>
+ * </dl>
+ * <p>
+ * IMPORTANT: This class is <em>not</em> intended to be subclassed.
+ * </p>
+ * @see #syncExec
+ * @see #asyncExec
+ * @see #wake
+ * @see #readAndDispatch
+ * @see #sleep
+ * @see Device#dispose
+ * @see <a href="http://www.eclipse.org/swt/snippets/#display">Display snippets</a>
+ * @see <a href="http://www.eclipse.org/swt/">Sample code and further information</a>
+ * @noextend This class is not intended to be subclassed by clients.
+ */
+public class Display extends Device {
+
+ /**
+ * the handle to the OS message queue
+ * (Warning: This field is platform dependent)
+ * <p>
+ * <b>IMPORTANT:</b> This field is <em>not</em> part of the SWT
+ * public API. It is marked public only so that it can be shared
+ * within the packages provided by SWT. It is not available on all
+ * platforms and should never be accessed from application code.
+ * </p>
+ *
+ * @noreference This field is not intended to be referenced by clients.
+ */
+ public MSG msg = new MSG ();
+
+ static String APP_NAME = "SWT"; //$NON-NLS-1$
+ static String APP_VERSION = ""; //$NON-NLS-1$
+
+ /* Windows and Events */
+ Event [] eventQueue;
+ Callback windowCallback;
+ long windowProc;
+ int threadId;
+ TCHAR windowClass, windowShadowClass, windowOwnDCClass;
+ static int WindowClassCount;
+ static final String WindowName = "SWT_Window"; //$NON-NLS-1$
+ static final String WindowShadowName = "SWT_WindowShadow"; //$NON-NLS-1$
+ static final String WindowOwnDCName = "SWT_WindowOwnDC"; //$NON-NLS-1$
+ EventTable eventTable, filterTable;
+ boolean useOwnDC;
+ boolean externalEventLoop; // events are dispatched outside SWT, e.g. TrackPopupMenu or DoDragDrop
+
+ /* Widget Table */
+ int freeSlot;
+ int [] indexTable;
+ Control lastControl, lastGetControl;
+ long lastHwnd, lastGetHwnd;
+ Control [] controlTable;
+ static final int GROW_SIZE = 1024;
+ static final int SWT_OBJECT_INDEX = OS.GlobalAddAtom (new TCHAR (0, "SWT_OBJECT_INDEX", true)); //$NON-NLS-1$
+
+ /* Startup info */
+ static STARTUPINFO lpStartupInfo;
+ static {
+ lpStartupInfo = new STARTUPINFO ();
+ lpStartupInfo.cb = STARTUPINFO.sizeof;
+ OS.GetStartupInfo (lpStartupInfo);
+ }
+
+ /* XP Themes */
+ long hButtonTheme, hEditTheme, hExplorerBarTheme, hScrollBarTheme, hTabTheme;
+ static final char [] BUTTON = new char [] {'B', 'U', 'T', 'T', 'O', 'N', 0};
+ static final char [] EDIT = new char [] {'E', 'D', 'I', 'T', 0};
+ static final char [] EXPLORER = new char [] {'E', 'X', 'P', 'L', 'O', 'R', 'E', 'R', 0};
+ static final char [] EXPLORERBAR = new char [] {'E', 'X', 'P', 'L', 'O', 'R', 'E', 'R', 'B', 'A', 'R', 0};
+ static final char [] SCROLLBAR = new char [] {'S', 'C', 'R', 'O', 'L', 'L', 'B', 'A', 'R', 0};
+ static final char [] LISTVIEW = new char [] {'L', 'I', 'S', 'T', 'V', 'I', 'E', 'W', 0};
+ static final char [] TAB = new char [] {'T', 'A', 'B', 0};
+ static final char [] TREEVIEW = new char [] {'T', 'R', 'E', 'E', 'V', 'I', 'E', 'W', 0};
+
+ /* Custom icons */
+ long hIconSearch;
+ long hIconCancel;
+
+ /* Focus */
+ int focusEvent;
+ Control focusControl;
+ boolean fixFocus;
+
+ /* Menus */
+ Menu [] bars, popups;
+ MenuItem [] items;
+
+ /*
+ * The start value for WM_COMMAND id's.
+ * Windows reserves the values 0..100.
+ *
+ * The SmartPhone SWT resource file reserves
+ * the values 101..107.
+ */
+ static final int ID_START = 108;
+
+ /* Filter Hook */
+ Callback msgFilterCallback;
+ long msgFilterProc, filterHook;
+ MSG hookMsg = new MSG ();
+ boolean runDragDrop = true, dragCancelled = false;
+
+ /* Idle Hook */
+ Callback foregroundIdleCallback;
+ long foregroundIdleProc, idleHook;
+
+ /* Message Hook and Embedding */
+ boolean ignoreNextKey;
+ Callback getMsgCallback, embeddedCallback;
+ long getMsgProc, msgHook, embeddedHwnd, embeddedProc;
+ static final String AWT_WINDOW_CLASS = "SunAwtWindow"; //$NON-NLS-1$
+ static final short [] ACCENTS = new short [] {'~', '`', '\'', '^', '"'};
+
+ /* Sync/Async Widget Communication */
+ Synchronizer synchronizer = new Synchronizer (this);
+ Consumer<RuntimeException> runtimeExceptionHandler = DefaultExceptionHandler.RUNTIME_EXCEPTION_HANDLER;
+ Consumer<Error> errorHandler = DefaultExceptionHandler.RUNTIME_ERROR_HANDLER;
+ boolean runMessagesInIdle = false, runMessagesInMessageProc = true;
+ static final String RUN_MESSAGES_IN_IDLE_KEY = "org.eclipse.swt.internal.win32.runMessagesInIdle"; //$NON-NLS-1$
+ static final String RUN_MESSAGES_IN_MESSAGE_PROC_KEY = "org.eclipse.swt.internal.win32.runMessagesInMessageProc"; //$NON-NLS-1$
+ static final String USE_OWNDC_KEY = "org.eclipse.swt.internal.win32.useOwnDC"; //$NON-NLS-1$
+ static final String ACCEL_KEY_HIT = "org.eclipse.swt.internal.win32.accelKeyHit"; //$NON-NLS-1$
+ static final String EXTERNAL_EVENT_LOOP_KEY = "org.eclipse.swt.internal.win32.externalEventLoop"; //$NON-NLS-1$
+ Thread thread;
+
+ /* Display Shutdown */
+ Runnable [] disposeList;
+
+ /* Deferred Layout list */
+ Composite[] layoutDeferred;
+ int layoutDeferredCount;
+
+ /* System Tray */
+ Tray tray;
+ int nextTrayId;
+
+ /* TaskBar */
+ TaskBar taskBar;
+ static final String TASKBAR_EVENT = "/SWTINTERNAL_ID"; //$NON-NLS-1$
+ static final String LAUNCHER_PREFIX = "--launcher.openFile "; //$NON-NLS-1$
+
+ /* Timers */
+ long [] timerIds;
+ Runnable [] timerList;
+ long nextTimerId = SETTINGS_ID + 1;
+
+ /* Settings */
+ static final long SETTINGS_ID = 100;
+ static final int SETTINGS_DELAY = 2000;
+
+ /* Keyboard and Mouse */
+ RECT clickRect;
+ int clickCount, lastTime, lastButton;
+ long lastClickHwnd;
+ int scrollRemainder, scrollHRemainder;
+ int lastKey, lastMouse, lastAscii;
+ boolean lastVirtual, lastNull, lastDead;
+ byte [] keyboard = new byte [256];
+ boolean accelKeyHit, mnemonicKeyHit;
+ boolean lockActiveWindow, captureChanged, xMouse;
+
+ /* Gesture state */
+ double magStartDistance, lastDistance;
+ double rotationAngle;
+ int lastX, lastY;
+
+ /* Touch state */
+ TouchSource [] touchSources;
+
+ /* Tool Tips */
+ int nextToolTipId;
+
+ /* MDI */
+ boolean ignoreRestoreFocus;
+ Control lastHittestControl;
+ int lastHittest;
+
+ /* Message Only Window */
+ Callback messageCallback;
+ long hwndMessage, messageProc;
+
+ /* System Resources */
+ LOGFONT lfSystemFont;
+ Font systemFont;
+ Image errorImage, infoImage, questionImage, warningIcon;
+ Cursor [] cursors = new Cursor [SWT.CURSOR_HAND + 1];
+ Resource [] resources;
+ static final int RESOURCE_SIZE = 1 + 4 + SWT.CURSOR_HAND + 1;
+
+ /* ImageList Cache */
+ ImageList[] imageList, toolImageList, toolHotImageList, toolDisabledImageList;
+
+ /* Custom Colors for ChooseColor */
+ long lpCustColors;
+
+ /* Table */
+ char [] tableBuffer;
+
+ /* Resize and move recursion */
+ int resizeCount;
+ static final int RESIZE_LIMIT = 4;
+
+ /* Display Data */
+ Object data;
+ String [] keys;
+ Object [] values;
+
+ /* Key Mappings */
+ static final int [] [] KeyTable = {
+
+ /* Keyboard and Mouse Masks */
+ {OS.VK_MENU, SWT.ALT},
+ {OS.VK_SHIFT, SWT.SHIFT},
+ {OS.VK_CONTROL, SWT.CONTROL},
+// {OS.VK_????, SWT.COMMAND},
+
+ /* NOT CURRENTLY USED */
+// {OS.VK_LBUTTON, SWT.BUTTON1},
+// {OS.VK_MBUTTON, SWT.BUTTON3},
+// {OS.VK_RBUTTON, SWT.BUTTON2},
+
+ /* Non-Numeric Keypad Keys */
+ {OS.VK_UP, SWT.ARROW_UP},
+ {OS.VK_DOWN, SWT.ARROW_DOWN},
+ {OS.VK_LEFT, SWT.ARROW_LEFT},
+ {OS.VK_RIGHT, SWT.ARROW_RIGHT},
+ {OS.VK_PRIOR, SWT.PAGE_UP},
+ {OS.VK_NEXT, SWT.PAGE_DOWN},
+ {OS.VK_HOME, SWT.HOME},
+ {OS.VK_END, SWT.END},
+ {OS.VK_INSERT, SWT.INSERT},
+
+ /* Virtual and Ascii Keys */
+ {OS.VK_BACK, SWT.BS},
+ {OS.VK_RETURN, SWT.CR},
+ {OS.VK_DELETE, SWT.DEL},
+ {OS.VK_ESCAPE, SWT.ESC},
+ {OS.VK_RETURN, SWT.LF},
+ {OS.VK_TAB, SWT.TAB},
+
+ /* Functions Keys */
+ {OS.VK_F1, SWT.F1},
+ {OS.VK_F2, SWT.F2},
+ {OS.VK_F3, SWT.F3},
+ {OS.VK_F4, SWT.F4},
+ {OS.VK_F5, SWT.F5},
+ {OS.VK_F6, SWT.F6},
+ {OS.VK_F7, SWT.F7},
+ {OS.VK_F8, SWT.F8},
+ {OS.VK_F9, SWT.F9},
+ {OS.VK_F10, SWT.F10},
+ {OS.VK_F11, SWT.F11},
+ {OS.VK_F12, SWT.F12},
+ {OS.VK_F13, SWT.F13},
+ {OS.VK_F14, SWT.F14},
+ {OS.VK_F15, SWT.F15},
+ {OS.VK_F16, SWT.F16},
+ {OS.VK_F17, SWT.F17},
+ {OS.VK_F18, SWT.F18},
+ {OS.VK_F19, SWT.F19},
+ {OS.VK_F20, SWT.F20},
+
+ /* Numeric Keypad Keys */
+ {OS.VK_MULTIPLY, SWT.KEYPAD_MULTIPLY},
+ {OS.VK_ADD, SWT.KEYPAD_ADD},
+ {OS.VK_RETURN, SWT.KEYPAD_CR},
+ {OS.VK_SUBTRACT, SWT.KEYPAD_SUBTRACT},
+ {OS.VK_DECIMAL, SWT.KEYPAD_DECIMAL},
+ {OS.VK_DIVIDE, SWT.KEYPAD_DIVIDE},
+ {OS.VK_NUMPAD0, SWT.KEYPAD_0},
+ {OS.VK_NUMPAD1, SWT.KEYPAD_1},
+ {OS.VK_NUMPAD2, SWT.KEYPAD_2},
+ {OS.VK_NUMPAD3, SWT.KEYPAD_3},
+ {OS.VK_NUMPAD4, SWT.KEYPAD_4},
+ {OS.VK_NUMPAD5, SWT.KEYPAD_5},
+ {OS.VK_NUMPAD6, SWT.KEYPAD_6},
+ {OS.VK_NUMPAD7, SWT.KEYPAD_7},
+ {OS.VK_NUMPAD8, SWT.KEYPAD_8},
+ {OS.VK_NUMPAD9, SWT.KEYPAD_9},
+// {OS.VK_????, SWT.KEYPAD_EQUAL},
+
+ /* Other keys */
+ {OS.VK_CAPITAL, SWT.CAPS_LOCK},
+ {OS.VK_NUMLOCK, SWT.NUM_LOCK},
+ {OS.VK_SCROLL, SWT.SCROLL_LOCK},
+ {OS.VK_PAUSE, SWT.PAUSE},
+ {OS.VK_CANCEL, SWT.BREAK},
+ {OS.VK_SNAPSHOT, SWT.PRINT_SCREEN},
+// {OS.VK_????, SWT.HELP},
+
+ };
+
+ /* Multiple Displays */
+ static Display Default;
+ static Display [] Displays = new Display [4];
+
+ /* Multiple Monitors */
+ Monitor[] monitors = null;
+ int monitorCount = 0;
+
+ /* Modality */
+ Shell [] modalShells;
+ Dialog modalDialog;
+ static boolean TrimEnabled = false;
+
+ /* Private SWT Window Messages */
+ static final int SWT_GETACCELCOUNT = OS.WM_APP;
+ static final int SWT_GETACCEL = OS.WM_APP + 1;
+ static final int SWT_KEYMSG = OS.WM_APP + 2;
+ static final int SWT_DESTROY = OS.WM_APP + 3;
+ static final int SWT_TRAYICONMSG = OS.WM_APP + 4;
+ static final int SWT_NULL = OS.WM_APP + 5;
+ static final int SWT_RUNASYNC = OS.WM_APP + 6;
+ static int TASKBARCREATED;
+ static int TASKBARBUTTONCREATED;
+ static int SWT_RESTORECARET;
+ static int DI_GETDRAGIMAGE;
+ static int SWT_OPENDOC;
+
+ /* Skinning support */
+ Widget [] skinList = new Widget [GROW_SIZE];
+ int skinCount;
+
+ /* Package Name */
+ static final String PACKAGE_PREFIX = "org.eclipse.swt.widgets."; //$NON-NLS-1$
+ /*
+ * This code is intentionally commented. In order
+ * to support CLDC, .class cannot be used because
+ * it does not compile on some Java compilers when
+ * they are targeted for CLDC.
+ */
+// static {
+// String name = Display.class.getName ();
+// int index = name.lastIndexOf ('.');
+// PACKAGE_PREFIX = name.substring (0, index + 1);
+// }
+
+ /*
+ * TEMPORARY CODE. Install the runnable that
+ * gets the current display. This code will
+ * be removed in the future.
+ */
+ static {
+ DeviceFinder = () -> {
+ Device device = getCurrent ();
+ if (device == null) {
+ device = getDefault ();
+ }
+ setDevice (device);
+ };
+ }
+
+/*
+* TEMPORARY CODE.
+*/
+static void setDevice (Device device) {
+ CurrentDevice = device;
+}
+
+/**
+ * Constructs a new instance of this class.
+ * <p>
+ * Note: The resulting display is marked as the <em>current</em>
+ * display. If this is the first display which has been
+ * constructed since the application started, it is also
+ * marked as the <em>default</em> display.
+ * </p>
+ *
+ * @exception SWTException <ul>
+ * <li>ERROR_THREAD_INVALID_ACCESS - if called from a thread that already created an existing display</li>
+ * <li>ERROR_INVALID_SUBCLASS - if this class is not an allowed subclass</li>
+ * </ul>
+ *
+ * @see #getCurrent
+ * @see #getDefault
+ * @see Widget#checkSubclass
+ * @see Shell
+ */
+public Display () {
+ this (null);
+}
+
+/**
+ * Constructs a new instance of this class using the parameter.
+ *
+ * @param data the device data
+ */
+public Display (DeviceData data) {
+ super (data);
+}
+
+Control _getFocusControl () {
+ return findControl (OS.GetFocus ());
+}
+
+void addBar (Menu menu) {
+ if (bars == null) bars = new Menu [4];
+ int length = bars.length;
+ for (int i=0; i<length; i++) {
+ if (bars [i] == menu) return;
+ }
+ int index = 0;
+ while (index < length) {
+ if (bars [index] == null) break;
+ index++;
+ }
+ if (index == length) {
+ Menu [] newBars = new Menu [length + 4];
+ System.arraycopy (bars, 0, newBars, 0, length);
+ bars = newBars;
+ }
+ bars [index] = menu;
+}
+
+void addControl (long handle, Control control) {
+ if (handle == 0) return;
+ if (freeSlot == -1) {
+ int length = (freeSlot = indexTable.length) + GROW_SIZE;
+ int [] newIndexTable = new int [length];
+ Control [] newControlTable = new Control [length];
+ System.arraycopy (indexTable, 0, newIndexTable, 0, freeSlot);
+ System.arraycopy (controlTable, 0, newControlTable, 0, freeSlot);
+ for (int i=freeSlot; i<length-1; i++) newIndexTable [i] = i + 1;
+ newIndexTable [length - 1] = -1;
+ indexTable = newIndexTable;
+ controlTable = newControlTable;
+ }
+ OS.SetProp (handle, SWT_OBJECT_INDEX, freeSlot + 1);
+ int oldSlot = freeSlot;
+ freeSlot = indexTable [oldSlot];
+ indexTable [oldSlot] = -2;
+ controlTable [oldSlot] = control;
+}
+
+void addSkinnableWidget (Widget widget) {
+ if (skinCount >= skinList.length) {
+ Widget[] newSkinWidgets = new Widget [skinList.length + GROW_SIZE];
+ System.arraycopy (skinList, 0, newSkinWidgets, 0, skinList.length);
+ skinList = newSkinWidgets;
+ }
+ skinList [skinCount++] = widget;
+}
+
+/**
+ * Adds the listener to the collection of listeners who will
+ * be notified when an event of the given type occurs anywhere
+ * in a widget. The event type is one of the event constants
+ * defined in class <code>SWT</code>. When the event does occur,
+ * the listener is notified by sending it the <code>handleEvent()</code>
+ * message.
+ * <p>
+ * Setting the type of an event to <code>SWT.None</code> from
+ * within the <code>handleEvent()</code> method can be used to
+ * change the event type and stop subsequent Java listeners
+ * from running. Because event filters run before other listeners,
+ * event filters can both block other listeners and set arbitrary
+ * fields within an event. For this reason, event filters are both
+ * powerful and dangerous. They should generally be avoided for
+ * performance, debugging and code maintenance reasons.
+ * </p>
+ *
+ * @param eventType the type of event to listen for
+ * @param listener the listener which should be notified when the event occurs
+ *
+ * @exception IllegalArgumentException <ul>
+ * <li>ERROR_NULL_ARGUMENT - if the listener is null</li>
+ * </ul>
+ * @exception SWTException <ul>
+ * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
+ * <li>ERROR_DEVICE_DISPOSED - if the receiver has been disposed</li>
+ * </ul>
+ *
+ * @see Listener
+ * @see SWT
+ * @see #removeFilter
+ * @see #removeListener
+ *
+ * @since 3.0
+ */
+public void addFilter (int eventType, Listener listener) {
+ checkDevice ();
+ if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
+ if (filterTable == null) filterTable = new EventTable ();
+ filterTable.hook (eventType, listener);
+}
+
+void addLayoutDeferred (Composite comp) {
+ if (layoutDeferred == null) layoutDeferred = new Composite [64];
+ if (layoutDeferredCount == layoutDeferred.length) {
+ Composite [] temp = new Composite [layoutDeferred.length + 64];
+ System.arraycopy (layoutDeferred, 0, temp, 0, layoutDeferred.length);
+ layoutDeferred = temp;
+ }
+ layoutDeferred[layoutDeferredCount++] = comp;
+}
+
+/**
+ * Adds the listener to the collection of listeners who will
+ * be notified when an event of the given type occurs. The event
+ * type is one of the event constants defined in class <code>SWT</code>.
+ * When the event does occur in the display, the listener is notified by
+ * sending it the <code>handleEvent()</code> message.
+ *
+ * @param eventType the type of event to listen for
+ * @param listener the listener which should be notified when the event occurs
+ *
+ * @exception IllegalArgumentException <ul>
+ * <li>ERROR_NULL_ARGUMENT - if the listener is null</li>
+ * </ul>
+ * @exception SWTException <ul>
+ * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
+ * <li>ERROR_DEVICE_DISPOSED - if the receiver has been disposed</li>
+ * </ul>
+ *
+ * @see Listener
+ * @see SWT
+ * @see #removeListener
+ *
+ * @since 2.0
+ */
+public void addListener (int eventType, Listener listener) {
+ checkDevice ();
+ if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
+ if (eventTable == null) eventTable = new EventTable ();
+ eventTable.hook (eventType, listener);
+}
+
+void addMenuItem (MenuItem item) {
+ if (items == null) items = new MenuItem [64];
+ for (int i=0; i<items.length; i++) {
+ if (items [i] == null) {
+ item.id = i + ID_START;
+ items [i] = item;
+ return;
+ }
+ }
+ item.id = items.length + ID_START;
+ MenuItem [] newItems = new MenuItem [items.length + 64];
+ newItems [items.length] = item;
+ System.arraycopy (items, 0, newItems, 0, items.length);
+ items = newItems;
+}
+
+void addPopup (Menu menu) {
+ if (popups == null) popups = new Menu [4];
+ int length = popups.length;
+ for (int i=0; i<length; i++) {
+ if (popups [i] == menu) return;
+ }
+ int index = 0;
+ while (index < length) {
+ if (popups [index] == null) break;
+ index++;
+ }
+ if (index == length) {
+ Menu [] newPopups = new Menu [length + 4];
+ System.arraycopy (popups, 0, newPopups, 0, length);
+ popups = newPopups;
+ }
+ popups [index] = menu;
+}
+
+int asciiKey (int key) {
+ /* Get the current keyboard. */
+ for (int i=0; i<keyboard.length; i++) keyboard [i] = 0;
+ if (!OS.GetKeyboardState (keyboard)) return 0;
+
+ /* Translate the key to ASCII or UNICODE using the virtual keyboard */
+ char [] result = new char [1];
+ if (OS.ToUnicode (key, key, keyboard, result, 1, 0) == 1) return result [0];
+ return 0;
+}
+
+/**
+ * Causes the <code>run()</code> method of the runnable to
+ * be invoked by the user-interface thread at the next
+ * reasonable opportunity. The caller of this method continues
+ * to run in parallel, and is not notified when the
+ * runnable has completed. Specifying <code>null</code> as the
+ * runnable simply wakes the user-interface thread when run.
+ * <p>
+ * Note that at the time the runnable is invoked, widgets
+ * that have the receiver as their display may have been
+ * disposed. Therefore, it is necessary to check for this
+ * case inside the runnable before accessing the widget.
+ * </p>
+ *
+ * @param runnable code to run on the user-interface thread or <code>null</code>
+ *
+ * @exception SWTException <ul>
+ * <li>ERROR_DEVICE_DISPOSED - if the receiver has been disposed</li>
+ * </ul>
+ *
+ * @see #syncExec
+ */
+public void asyncExec (Runnable runnable) {
+ synchronized (Device.class) {
+ if (isDisposed ()) error (SWT.ERROR_DEVICE_DISPOSED);
+ synchronizer.asyncExec (runnable);
+ }
+}
+
+/**
+ * Causes the system hardware to emit a short sound
+ * (if it supports this capability).
+ *
+ * @exception SWTException <ul>
+ * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
+ * <li>ERROR_DEVICE_DISPOSED - if the receiver has been disposed</li>
+ * </ul>
+ */
+public void beep () {
+ checkDevice ();
+ OS.MessageBeep (OS.MB_OK);
+}
+
+/**
+ * Checks that this class can be subclassed.
+ * <p>
+ * IMPORTANT: See the comment in <code>Widget.checkSubclass()</code>.
+ * </p>
+ *
+ * @exception SWTException <ul>
+ * <li>ERROR_INVALID_SUBCLASS - if this class is not an allowed subclass</li>
+ * </ul>
+ *
+ * @see Widget#checkSubclass
+ */
+protected void checkSubclass () {
+ if (!isValidClass (getClass ())) error (SWT.ERROR_INVALID_SUBCLASS);
+}
+
+@Override
+protected void checkDevice () {
+ if (thread == null) error (SWT.ERROR_WIDGET_DISPOSED);
+ if (thread != Thread.currentThread ()) {
+ /*
+ * Bug in IBM JVM 1.6. For some reason, under
+ * conditions that are yet to be full understood,
+ * Thread.currentThread() is either returning null
+ * or a different instance from the one that was
+ * saved when the Display was created. This is
+ * possibly a JIT problem because modifying this
+ * method to print logging information when the
+ * error happens seems to fix the problem. The
+ * fix is to use operating system calls to verify
+ * that the current thread is not the Display thread.
+ *
+ * NOTE: Despite the fact that Thread.currentThread()
+ * is used in other places, the failure has not been
+ * observed in all places where it is called.
+ */
+ if (threadId != OS.GetCurrentThreadId ()) {
+ error (SWT.ERROR_THREAD_INVALID_ACCESS);
+ }
+ }
+ if (isDisposed ()) error (SWT.ERROR_DEVICE_DISPOSED);
+}
+
+static void checkDisplay (Thread thread, boolean multiple) {
+ synchronized (Device.class) {
+ for (int i=0; i<Displays.length; i++) {
+ if (Displays [i] != null) {
+ if (!multiple) SWT.error (SWT.ERROR_NOT_IMPLEMENTED, null, " [multiple displays]"); //$NON-NLS-1$
+ if (Displays [i].thread == thread) SWT.error (SWT.ERROR_THREAD_INVALID_ACCESS);
+ }
+ }
+ }
+}
+
+void clearModal (Shell shell) {
+ if (modalShells == null) return;
+ int index = 0, length = modalShells.length;
+ while (index < length) {
+ if (modalShells [index] == shell) break;
+ if (modalShells [index] == null) return;
+ index++;
+ }
+ if (index == length) return;
+ System.arraycopy (modalShells, index + 1, modalShells, index, --length - index);
+ modalShells [length] = null;
+ if (index == 0 && modalShells [0] == null) modalShells = null;
+ Shell [] shells = getShells ();
+ for (int i=0; i<shells.length; i++) shells [i].updateModal ();
+}
+
+int controlKey (int key) {
+ int upper = (int)OS.CharUpper ((short) key);
+ if (64 <= upper && upper <= 95) return upper & 0xBF;
+ return key;
+}
+
+/**
+ * Requests that the connection between SWT and the underlying
+ * operating system be closed.
+ *
+ * @exception SWTException <ul>
+ * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
+ * <li>ERROR_DEVICE_DISPOSED - if the receiver has been disposed</li>
+ * </ul>
+ *
+ * @see Device#dispose
+ *
+ * @since 2.0
+ */
+public void close () {
+ checkDevice ();
+ Event event = new Event ();
+ sendEvent (SWT.Close, event);
+ if (event.doit) dispose ();
+}
+
+/**
+ * Creates the device in the operating system. If the device
+ * does not have a handle, this method may do nothing depending
+ * on the device.
+ * <p>
+ * This method is called before <code>init</code>.
+ * </p>
+ *
+ * @param data the DeviceData which describes the receiver
+ *
+ * @see #init
+ */
+@Override
+protected void create (DeviceData data) {
+ checkSubclass ();
+ checkDisplay (thread = Thread.currentThread (), true);
+ createDisplay (data);
+ register (this);
+ if (Default == null) Default = this;
+}
+
+void createDisplay (DeviceData data) {
+}
+
+static long create32bitDIB (Image image) {
+ int transparentPixel = -1, alpha = -1;
+ long hMask = 0, hBitmap = 0;
+ byte[] alphaData = null;
+ switch (image.type) {
+ case SWT.ICON:
+ ICONINFO info = new ICONINFO ();
+ OS.GetIconInfo (image.handle, info);
+ hBitmap = info.hbmColor;
+ hMask = info.hbmMask;
+ break;
+ case SWT.BITMAP:
+ ImageData data = image.getImageData (DPIUtil.getDeviceZoom ());
+ hBitmap = image.handle;
+ alpha = data.alpha;
+ alphaData = data.alphaData;
+ transparentPixel = data.transparentPixel;
+ break;
+ }
+ BITMAP bm = new BITMAP ();
+ OS.GetObject (hBitmap, BITMAP.sizeof, bm);
+ int imgWidth = bm.bmWidth;
+ int imgHeight = bm.bmHeight;
+ long hDC = OS.GetDC (0);
+ long srcHdc = OS.CreateCompatibleDC (hDC);
+ long oldSrcBitmap = OS.SelectObject (srcHdc, hBitmap);
+ long memHdc = OS.CreateCompatibleDC (hDC);
+ BITMAPINFOHEADER bmiHeader = new BITMAPINFOHEADER ();
+ bmiHeader.biSize = BITMAPINFOHEADER.sizeof;
+ bmiHeader.biWidth = imgWidth;
+ bmiHeader.biHeight = -imgHeight;
+ bmiHeader.biPlanes = 1;
+ bmiHeader.biBitCount = (short)32;
+ bmiHeader.biCompression = OS.BI_RGB;
+ byte [] bmi = new byte [BITMAPINFOHEADER.sizeof];
+ OS.MoveMemory (bmi, bmiHeader, BITMAPINFOHEADER.sizeof);
+ long [] pBits = new long [1];
+ long memDib = OS.CreateDIBSection (0, bmi, OS.DIB_RGB_COLORS, pBits, 0, 0);
+ if (memDib == 0) SWT.error (SWT.ERROR_NO_HANDLES);
+ long oldMemBitmap = OS.SelectObject (memHdc, memDib);
+ BITMAP dibBM = new BITMAP ();
+ OS.GetObject (memDib, BITMAP.sizeof, dibBM);
+ int sizeInBytes = dibBM.bmWidthBytes * dibBM.bmHeight;
+ OS.BitBlt (memHdc, 0, 0, imgWidth, imgHeight, srcHdc, 0, 0, OS.SRCCOPY);
+ byte red = 0, green = 0, blue = 0;
+ if (transparentPixel != -1) {
+ if (bm.bmBitsPixel <= 8) {
+ byte [] color = new byte [4];
+ OS.GetDIBColorTable (srcHdc, transparentPixel, 1, color);
+ blue = color [0];
+ green = color [1];
+ red = color [2];
+ } else {
+ switch (bm.bmBitsPixel) {
+ case 16:
+ blue = (byte)((transparentPixel & 0x1F) << 3);
+ green = (byte)((transparentPixel & 0x3E0) >> 2);
+ red = (byte)((transparentPixel & 0x7C00) >> 7);
+ break;
+ case 24:
+ blue = (byte)((transparentPixel & 0xFF0000) >> 16);
+ green = (byte)((transparentPixel & 0xFF00) >> 8);
+ red = (byte)(transparentPixel & 0xFF);
+ break;
+ case 32:
+ blue = (byte)((transparentPixel & 0xFF000000) >>> 24);
+ green = (byte)((transparentPixel & 0xFF0000) >> 16);
+ red = (byte)((transparentPixel & 0xFF00) >> 8);
+ break;
+ }
+ }
+ }
+ byte [] srcData = new byte [sizeInBytes];
+ OS.MoveMemory (srcData, pBits [0], sizeInBytes);
+ if (hMask != 0) {
+ OS.SelectObject(srcHdc, hMask);
+ for (int y = 0, dp = 0; y < imgHeight; ++y) {
+ for (int x = 0; x < imgWidth; ++x) {
+ if (OS.GetPixel(srcHdc, x, y) != 0) {
+ srcData [dp + 0] = srcData [dp + 1] = srcData [dp + 2] = srcData[dp + 3] = (byte)0;
+ } else {
+ srcData[dp + 3] = (byte)0xFF;
+ }
+ dp += 4;
+ }
+ }
+ } else if (alpha != -1) {
+ for (int y = 0, dp = 0; y < imgHeight; ++y) {
+ for (int x = 0; x < imgWidth; ++x) {
+ int r = ((srcData[dp + 0] & 0xFF) * alpha) + 128;
+ r = (r + (r >> 8)) >> 8;
+ int g = ((srcData[dp + 1] & 0xFF) * alpha) + 128;
+ g = (g + (g >> 8)) >> 8;
+ int b = ((srcData[dp + 2] & 0xFF) * alpha) + 128;
+ b = (b + (b >> 8)) >> 8;
+ srcData[dp+0] = (byte)r;
+ srcData[dp+1] = (byte)g;
+ srcData[dp+2] = (byte)b;
+ srcData[dp+3] = (byte)alpha;
+ dp += 4;
+ }
+ }
+ } else if (alphaData != null) {
+ for (int y = 0, dp = 0, ap = 0; y < imgHeight; ++y) {
+ for (int x = 0; x < imgWidth; ++x) {
+ int a = alphaData[ap++] & 0xFF;
+ int r = ((srcData[dp + 0] & 0xFF) * a) + 128;
+ r = (r + (r >> 8)) >> 8;
+ int g = ((srcData[dp + 1] & 0xFF) * a) + 128;
+ g = (g + (g >> 8)) >> 8;
+ int b = ((srcData[dp + 2] & 0xFF) * a) + 128;
+ b = (b + (b >> 8)) >> 8;
+ srcData[dp+0] = (byte)r;
+ srcData[dp+1] = (byte)g;
+ srcData[dp+2] = (byte)b;
+ srcData[dp+3] = (byte)a;
+ dp += 4;
+ }
+ }
+ } else if (transparentPixel != -1) {
+ for (int y = 0, dp = 0; y < imgHeight; ++y) {
+ for (int x = 0; x < imgWidth; ++x) {
+ if (srcData [dp] == blue && srcData [dp + 1] == green && srcData [dp + 2] == red) {
+ srcData [dp + 0] = srcData [dp + 1] = srcData [dp + 2] = srcData [dp + 3] = (byte)0;
+ } else {
+ srcData [dp + 3] = (byte)0xFF;
+ }
+ dp += 4;
+ }
+ }
+ } else {
+ for (int y = 0, dp = 0; y < imgHeight; ++y) {
+ for (int x = 0; x < imgWidth; ++x) {
+ srcData [dp + 3] = (byte)0xFF;
+ dp += 4;
+ }
+ }
+ }
+ OS.MoveMemory (pBits [0], srcData, sizeInBytes);
+ OS.SelectObject (srcHdc, oldSrcBitmap);
+ OS.SelectObject (memHdc, oldMemBitmap);
+ OS.DeleteObject (srcHdc);
+ OS.DeleteObject (memHdc);
+ OS.ReleaseDC (0, hDC);
+ if (hBitmap != image.handle && hBitmap != 0) OS.DeleteObject (hBitmap);
+ if (hMask != 0) OS.DeleteObject (hMask);
+ return memDib;
+}
+static long create32bitDIB (long hBitmap, int alpha, byte [] alphaData, int transparentPixel) {
+ BITMAP bm = new BITMAP ();
+ OS.GetObject (hBitmap, BITMAP.sizeof, bm);
+ int imgWidth = bm.bmWidth;
+ int imgHeight = bm.bmHeight;
+ long hDC = OS.GetDC (0);
+ long srcHdc = OS.CreateCompatibleDC (hDC);
+ long oldSrcBitmap = OS.SelectObject (srcHdc, hBitmap);
+ long memHdc = OS.CreateCompatibleDC (hDC);
+ BITMAPINFOHEADER bmiHeader = new BITMAPINFOHEADER ();
+ bmiHeader.biSize = BITMAPINFOHEADER.sizeof;
+ bmiHeader.biWidth = imgWidth;
+ bmiHeader.biHeight = -imgHeight;
+ bmiHeader.biPlanes = 1;
+ bmiHeader.biBitCount = (short)32;
+ bmiHeader.biCompression = OS.BI_RGB;
+ byte [] bmi = new byte [BITMAPINFOHEADER.sizeof];
+ OS.MoveMemory (bmi, bmiHeader, BITMAPINFOHEADER.sizeof);
+ long [] pBits = new long [1];
+ long memDib = OS.CreateDIBSection (0, bmi, OS.DIB_RGB_COLORS, pBits, 0, 0);
+ if (memDib == 0) SWT.error (SWT.ERROR_NO_HANDLES);
+ long oldMemBitmap = OS.SelectObject (memHdc, memDib);
+ BITMAP dibBM = new BITMAP ();
+ OS.GetObject (memDib, BITMAP.sizeof, dibBM);
+ int sizeInBytes = dibBM.bmWidthBytes * dibBM.bmHeight;
+ OS.BitBlt (memHdc, 0, 0, imgWidth, imgHeight, srcHdc, 0, 0, OS.SRCCOPY);
+ byte red = 0, green = 0, blue = 0;
+ if (transparentPixel != -1) {
+ if (bm.bmBitsPixel <= 8) {
+ byte [] color = new byte [4];
+ OS.GetDIBColorTable (srcHdc, transparentPixel, 1, color);
+ blue = color [0];
+ green = color [1];
+ red = color [2];
+ } else {
+ switch (bm.bmBitsPixel) {
+ case 16:
+ blue = (byte)((transparentPixel & 0x1F) << 3);
+ green = (byte)((transparentPixel & 0x3E0) >> 2);
+ red = (byte)((transparentPixel & 0x7C00) >> 7);
+ break;
+ case 24:
+ blue = (byte)((transparentPixel & 0xFF0000) >> 16);
+ green = (byte)((transparentPixel & 0xFF00) >> 8);
+ red = (byte)(transparentPixel & 0xFF);
+ break;
+ case 32:
+ blue = (byte)((transparentPixel & 0xFF000000) >>> 24);
+ green = (byte)((transparentPixel & 0xFF0000) >> 16);
+ red = (byte)((transparentPixel & 0xFF00) >> 8);
+ break;
+ }
+ }
+ }
+ OS.SelectObject (srcHdc, oldSrcBitmap);
+ OS.SelectObject (memHdc, oldMemBitmap);
+ OS.DeleteObject (srcHdc);
+ OS.DeleteObject (memHdc);
+ OS.ReleaseDC (0, hDC);
+ byte [] srcData = new byte [sizeInBytes];
+ OS.MoveMemory (srcData, pBits [0], sizeInBytes);
+ if (alpha != -1) {
+ for (int y = 0, dp = 0; y < imgHeight; ++y) {
+ for (int x = 0; x < imgWidth; ++x) {
+ srcData [dp + 3] = (byte)alpha;
+ dp += 4;
+ }
+ }
+ } else if (alphaData != null) {
+ for (int y = 0, dp = 0, ap = 0; y < imgHeight; ++y) {
+ for (int x = 0; x < imgWidth; ++x) {
+ srcData [dp + 3] = alphaData [ap++];
+ dp += 4;
+ }
+ }
+ } else if (transparentPixel != -1) {
+ for (int y = 0, dp = 0; y < imgHeight; ++y) {
+ for (int x = 0; x < imgWidth; ++x) {
+ if (srcData [dp] == blue && srcData [dp + 1] == green && srcData [dp + 2] == red) {
+ srcData [dp + 3] = (byte)0;
+ } else {
+ srcData [dp + 3] = (byte)0xFF;
+ }
+ dp += 4;
+ }
+ }
+ }
+ OS.MoveMemory (pBits [0], srcData, sizeInBytes);
+ return memDib;
+}
+
+static Image createIcon (Image image) {
+ Device device = image.getDevice ();
+ ImageData data = image.getImageData (DPIUtil.getDeviceZoom ());
+ if (data.alpha == -1 && data.alphaData == null) {
+ ImageData mask = data.getTransparencyMask ();
+ return new Image (device, data, mask);
+ }
+ int width = data.width, height = data.height;
+ long hMask, hBitmap;
+ long hDC = device.internal_new_GC (null);
+ long dstHdc = OS.CreateCompatibleDC (hDC), oldDstBitmap;
+ hBitmap = Display.create32bitDIB (image.handle, data.alpha, data.alphaData, data.transparentPixel);
+ hMask = OS.CreateBitmap (width, height, 1, 1, null);
+ oldDstBitmap = OS.SelectObject (dstHdc, hMask);
+ OS.PatBlt (dstHdc, 0, 0, width, height, OS.BLACKNESS);
+ OS.SelectObject (dstHdc, oldDstBitmap);
+ OS.DeleteDC (dstHdc);
+ device.internal_dispose_GC (hDC, null);
+ ICONINFO info = new ICONINFO ();
+ info.fIcon = true;
+ info.hbmColor = hBitmap;
+ info.hbmMask = hMask;
+ long hIcon = OS.CreateIconIndirect (info);
+ if (hIcon == 0) SWT.error(SWT.ERROR_NO_HANDLES);
+ OS.DeleteObject (hBitmap);
+ OS.DeleteObject (hMask);
+ return Image.win32_new (device, SWT.ICON, hIcon);
+}
+
+static void deregister (Display display) {
+ synchronized (Device.class) {
+ for (int i=0; i<Displays.length; i++) {
+ if (display == Displays [i]) Displays [i] = null;
+ }
+ }
+}
+
+/**
+ * Destroys the device in the operating system and releases
+ * the device's handle. If the device does not have a handle,
+ * this method may do nothing depending on the device.
+ * <p>
+ * This method is called after <code>release</code>.
+ * </p>
+ * @see Device#dispose
+ * @see #release
+ */
+@Override
+protected void destroy () {
+ if (this == Default) Default = null;
+ deregister (this);
+ destroyDisplay ();
+}
+
+void destroyDisplay () {
+}
+
+/**
+ * Causes the <code>run()</code> method of the runnable to
+ * be invoked by the user-interface thread just before the
+ * receiver is disposed. Specifying a <code>null</code> runnable
+ * is ignored.
+ *
+ * @param runnable code to run at dispose time.
+ *
+ * @exception SWTException <ul>
+ * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
+ * <li>ERROR_DEVICE_DISPOSED - if the receiver has been disposed</li>
+ * </ul>
+ */
+public void disposeExec (Runnable runnable) {
+ checkDevice ();
+ if (disposeList == null) disposeList = new Runnable [4];
+ for (int i=0; i<disposeList.length; i++) {
+ if (disposeList [i] == null) {
+ disposeList [i] = runnable;
+ return;
+ }
+ }
+ Runnable [] newDisposeList = new Runnable [disposeList.length + 4];
+ System.arraycopy (disposeList, 0, newDisposeList, 0, disposeList.length);
+ newDisposeList [disposeList.length] = runnable;
+ disposeList = newDisposeList;
+}
+
+void drawMenuBars () {
+ if (bars == null) return;
+ for (int i=0; i<bars.length; i++) {
+ Menu menu = bars [i];
+ if (menu != null && !menu.isDisposed ()) menu.update ();
+ }
+ bars = null;
+}
+
+long embeddedProc (long hwnd, long msg, long wParam, long lParam) {
+ switch ((int)msg) {
+ case SWT_KEYMSG: {
+ MSG keyMsg = new MSG ();
+ OS.MoveMemory (keyMsg, lParam, MSG.sizeof);
+ OS.TranslateMessage (keyMsg);
+ OS.DispatchMessage (keyMsg);
+ long hHeap = OS.GetProcessHeap ();
+ OS.HeapFree (hHeap, 0, lParam);
+ break;
+ }
+ case SWT_DESTROY: {
+ OS.DestroyWindow (hwnd);
+ if (embeddedCallback != null) embeddedCallback.dispose ();
+ if (getMsgCallback != null) getMsgCallback.dispose ();
+ embeddedCallback = getMsgCallback = null;
+ embeddedProc = getMsgProc = 0;
+ break;
+ }
+ }
+ return OS.DefWindowProc (hwnd, (int)msg, wParam, lParam);
+}
+
+/**
+ * Does whatever display specific cleanup is required, and then
+ * uses the code in <code>SWTError.error</code> to handle the error.
+ *
+ * @param code the descriptive error code
+ *
+ * @see SWT#error(int)
+ */
+void error (int code) {
+ SWT.error (code);
+}
+
+boolean filterEvent (Event event) {
+ if (filterTable != null) {
+ int type = event.type;
+ sendPreEvent (type);
+ try {
+ filterTable.sendEvent (event);
+ } finally {
+ sendPostEvent (type);
+ }
+ }
+ return false;
+}
+
+boolean filters (int eventType) {
+ if (filterTable == null) return false;
+ return filterTable.hooks (eventType);
+}
+
+boolean filterMessage (MSG msg) {
+ int message = msg.message;
+ if (OS.WM_KEYFIRST <= message && message <= OS.WM_KEYLAST) {
+ Control control = findControl (msg.hwnd);
+ if (control != null) {
+ if (translateAccelerator (msg, control) || translateMnemonic (msg, control) || translateTraversal (msg, control)) {
+ lastAscii = lastKey = 0;
+ lastVirtual = lastNull = lastDead = false;
+ return true;
+ }
+ }
+ }
+ return false;
+}
+
+Control findControl (long handle) {
+ if (handle == 0) return null;
+ long hwndOwner = 0;
+ do {
+ Control control = getControl (handle);
+ if (control != null) return control;
+ hwndOwner = OS.GetWindow (handle, OS.GW_OWNER);
+ handle = OS.GetParent (handle);
+ } while (handle != 0 && handle != hwndOwner);
+ return null;
+}
+
+/**
+ * Given the operating system handle for a widget, returns
+ * the instance of the <code>Widget</code> subclass which
+ * represents it in the currently running application, if
+ * such exists, or null if no matching widget can be found.
+ * <p>
+ * <b>IMPORTANT:</b> This method should not be called from
+ * application code. The arguments are platform-specific.
+ * </p>
+ *
+ * @param handle the handle for the widget
+ * @return the SWT widget that the handle represents
+ *
+ * @exception SWTException <ul>
+ * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
+ * <li>ERROR_DEVICE_DISPOSED - if the receiver has been disposed</li>
+ * </ul>
+ *
+ * @noreference This method is not intended to be referenced by clients.
+ */
+public Widget findWidget (long handle) {
+ checkDevice ();
+ return getControl (handle);
+}
+
+/**
+ * Given the operating system handle for a widget,
+ * and widget-specific id, returns the instance of
+ * the <code>Widget</code> subclass which represents
+ * the handle/id pair in the currently running application,
+ * if such exists, or null if no matching widget can be found.
+ * <p>
+ * <b>IMPORTANT:</b> This method should not be called from
+ * application code. The arguments are platform-specific.
+ * </p>
+ *
+ * @param handle the handle for the widget
+ * @param id the id for the subwidget (usually an item)
+ * @return the SWT widget that the handle/id pair represents
+ *
+ * @exception SWTException <ul>
+ * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
+ * <li>ERROR_DEVICE_DISPOSED - if the receiver has been disposed</li>
+ * </ul>
+ *
+ * @noreference This method is not intended to be referenced by clients.
+ *
+ * @since 3.1
+ */
+public Widget findWidget (long handle, long id) {
+ checkDevice ();
+ Control control = getControl (handle);
+ return control != null ? control.findItem (id) : null;
+}
+
+/**
+ * Given a widget and a widget-specific id, returns the
+ * instance of the <code>Widget</code> subclass which represents
+ * the widget/id pair in the currently running application,
+ * if such exists, or null if no matching widget can be found.
+ *
+ * @param widget the widget
+ * @param id the id for the subwidget (usually an item)
+ * @return the SWT subwidget (usually an item) that the widget/id pair represents
+ *
+ * @exception SWTException <ul>
+ * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
+ * <li>ERROR_DEVICE_DISPOSED - if the receiver has been disposed</li>
+ * </ul>
+ *
+ * @noreference This method is not intended to be referenced by clients.
+ *
+ * @since 3.3
+ */
+public Widget findWidget (Widget widget, long id) {
+ checkDevice ();
+ if (widget instanceof Control) {
+ return findWidget (((Control) widget).handle, id);
+ }
+ return null;
+}
+
+long foregroundIdleProc (long code, long wParam, long lParam) {
+ if (code >= 0) {
+ if (getMessageCount () != 0) {
+ sendPostExternalEventDispatchEvent ();
+ if (runMessagesInIdle) {
+ if (runMessagesInMessageProc) {
+ OS.PostMessage (hwndMessage, SWT_RUNASYNC, 0, 0);
+ } else {
+ runAsyncMessages (false);
+ }
+ }
+ /*
+ * Bug in Windows. For some reason, input events can be lost
+ * when a message is posted to the queue from a foreground idle
+ * hook. The fix is to detect that there are outstanding input
+ * events and avoid posting the wake event.
+ *
+ * Note that PeekMessage() changes the state of events on the
+ * queue to no longer be considered new. If we peek for input
+ * events and posted messages (PM_QS_INPUT | PM_QS_POSTMESSAGE),
+ * it is possible to cause WaitMessage() to sleep until a new
+ * input event is generated causing sync runnables not to be
+ * executed.
+ */
+ MSG msg = new MSG();
+ int flags = OS.PM_NOREMOVE | OS.PM_NOYIELD | OS.PM_QS_INPUT;
+ if (!OS.PeekMessage (msg, 0, 0, 0, flags)) wakeThread ();
+ sendPreExternalEventDispatchEvent ();
+ }
+ }
+ return OS.CallNextHookEx (idleHook, (int)code, wParam, lParam);
+}
+
+/**
+ * Returns the display which the given thread is the
+ * user-interface thread for, or null if the given thread
+ * is not a user-interface thread for any display. Specifying
+ * <code>null</code> as the thread will return <code>null</code>
+ * for the display.
+ *
+ * @param thread the user-interface thread
+ * @return the display for the given thread
+ */
+public static Display findDisplay (Thread thread) {
+ synchronized (Device.class) {
+ for (int i=0; i<Displays.length; i++) {
+ Display display = Displays [i];
+ if (display != null && display.thread == thread) {
+ return display;
+ }
+ }
+ return null;
+ }
+}
+
+TouchSource findTouchSource (long touchDevice, Monitor monitor) {
+ if (touchSources == null) touchSources = new TouchSource [4];
+ int length = touchSources.length;
+ for (int i=0; i<length; i++) {
+ if (touchSources [i] != null && touchSources [i].handle == touchDevice) {
+ return touchSources [i];
+ }
+ }
+ int index = 0;
+ while (index < length) {
+ if (touchSources [index] == null) break;
+ index++;
+ }
+ if (index == length) {
+ TouchSource [] newTouchSources = new TouchSource [length + 4];
+ System.arraycopy (touchSources, 0, newTouchSources, 0, length);
+ touchSources = newTouchSources;
+ }
+ return touchSources [index] = new TouchSource (touchDevice, true, monitor.getBounds ());
+}
+
+/**
+ * Returns the currently active <code>Shell</code>, or null
+ * if no shell belonging to the currently running application
+ * is active.
+ *
+ * @return the active shell or null
+ *
+ * @exception SWTException <ul>
+ * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
+ * <li>ERROR_DEVICE_DISPOSED - if the receiver has been disposed</li>
+ * </ul>
+ */
+public Shell getActiveShell () {
+ checkDevice ();
+ Control control = findControl (OS.GetActiveWindow ());
+ return control != null ? control.getShell () : null;
+}
+
+/**
+ * Returns the single instance of the application menu bar, or
+ * <code>null</code> if there is no application menu bar for the platform.
+ *
+ * @return the application menu bar, or <code>null</code>
+ *
+ * @exception SWTException <ul>
+ * <li>ERROR_DEVICE_DISPOSED - if the receiver has been disposed</li>
+ * </ul>
+ *
+ * @since 3.7
+ */
+public Menu getMenuBar () {
+ checkDevice ();
+ return null;
+}
+
+/**
+ * Returns a rectangle describing the receiver's size and location. Note that
+ * on multi-monitor systems the origin can be negative.
+ *
+ * @return the bounding rectangle
+ *
+ * @exception SWTException <ul>
+ * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
+ * <li>ERROR_DEVICE_DISPOSED - if the receiver has been disposed</li>
+ * </ul>
+ */
+@Override
+public Rectangle getBounds() {
+ checkDevice ();
+ return DPIUtil.autoScaleDown(getBoundsInPixels());
+}
+
+Rectangle getBoundsInPixels () {
+ checkDevice ();
+ if (OS.GetSystemMetrics (OS.SM_CMONITORS) < 2) {
+ int width = OS.GetSystemMetrics (OS.SM_CXSCREEN);
+ int height = OS.GetSystemMetrics (OS.SM_CYSCREEN);
+ return new Rectangle (0, 0, width, height);
+ }
+ int x = OS.GetSystemMetrics (OS.SM_XVIRTUALSCREEN);
+ int y = OS.GetSystemMetrics (OS.SM_YVIRTUALSCREEN);
+ int width = OS.GetSystemMetrics (OS.SM_CXVIRTUALSCREEN);
+ int height = OS.GetSystemMetrics (OS.SM_CYVIRTUALSCREEN);
+ return new Rectangle (x, y, width, height);
+}
+
+/**
+ * Returns the display which the currently running thread is
+ * the user-interface thread for, or null if the currently
+ * running thread is not a user-interface thread for any display.
+ *
+ * @return the current display
+ */
+public static Display getCurrent () {
+ return findDisplay (Thread.currentThread ());
+}
+
+int getClickCount (int type, int button, long hwnd, long lParam) {
+ switch (type) {
+ case SWT.MouseDown:
+ int doubleClick = OS.GetDoubleClickTime ();
+ if (clickRect == null) clickRect = new RECT ();
+ int deltaTime = Math.abs (lastTime - getLastEventTime ());
+ POINT pt = new POINT ();
+ OS.POINTSTOPOINT (pt, lParam);
+ if (lastClickHwnd == hwnd && lastButton == button && (deltaTime <= doubleClick) && OS.PtInRect (clickRect, pt)) {
+ clickCount++;
+ } else {
+ clickCount = 1;
+ }
+ //FALL THROUGH
+ case SWT.MouseDoubleClick:
+ lastButton = button;
+ lastClickHwnd = hwnd;
+ lastTime = getLastEventTime ();
+ int xInset = OS.GetSystemMetrics (OS.SM_CXDOUBLECLK) / 2;
+ int yInset = OS.GetSystemMetrics (OS.SM_CYDOUBLECLK) / 2;
+ int x = OS.GET_X_LPARAM (lParam), y = OS.GET_Y_LPARAM (lParam);
+ OS.SetRect (clickRect, x - xInset, y - yInset, x + xInset, y + yInset);
+ //FALL THROUGH
+ case SWT.MouseUp:
+ return clickCount;
+ }
+ return 0;
+}
+
+/**
+ * Returns a rectangle which describes the area of the
+ * receiver which is capable of displaying data.
+ *
+ * @return the client area
+ *
+ * @exception SWTException <ul>
+ * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
+ * <li>ERROR_DEVICE_DISPOSED - if the receiver has been disposed</li>
+ * </ul>
+ *
+ * @see #getBounds
+ */
+@Override
+public Rectangle getClientArea () {
+ checkDevice ();
+ return DPIUtil.autoScaleDown(getClientAreaInPixels());
+}
+
+Rectangle getClientAreaInPixels () {
+ checkDevice ();
+ if (OS.GetSystemMetrics (OS.SM_CMONITORS) < 2) {
+ RECT rect = new RECT ();
+ OS.SystemParametersInfo (OS.SPI_GETWORKAREA, 0, rect, 0);
+ int width = rect.right - rect.left;
+ int height = rect.bottom - rect.top;
+ return new Rectangle (rect.left, rect.top, width, height);
+ }
+ int x = OS.GetSystemMetrics (OS.SM_XVIRTUALSCREEN);
+ int y = OS.GetSystemMetrics (OS.SM_YVIRTUALSCREEN);
+ int width = OS.GetSystemMetrics (OS.SM_CXVIRTUALSCREEN);
+ int height = OS.GetSystemMetrics (OS.SM_CYVIRTUALSCREEN);
+ return new Rectangle (x, y, width, height);
+}
+
+Control getControl (long handle) {
+ if (handle == 0) return null;
+ if (lastControl != null && lastHwnd == handle) {
+ return lastControl;
+ }
+ if (lastGetControl != null && lastGetHwnd == handle) {
+ return lastGetControl;
+ }
+ int index = (int)OS.GetProp (handle, SWT_OBJECT_INDEX) - 1;
+ if (0 <= index && index < controlTable.length) {
+ Control control = controlTable [index];
+ /*
+ * Because GWL_USERDATA can be used by native widgets that
+ * do not belong to SWT, it is possible that GWL_USERDATA
+ * could return an index that is in the range of the table,
+ * but was not put there by SWT. Therefore, it is necessary
+ * to check the handle of the control that is in the table
+ * against the handle that provided the GWL_USERDATA.
+ */
+ if (control != null && control.checkHandle (handle)) {
+ lastGetHwnd = handle;
+ lastGetControl = control;
+ return control;
+ }
+ }
+ return null;
+}
+
+/**
+ * Returns the control which the on-screen pointer is currently
+ * over top of, or null if it is not currently over one of the
+ * controls built by the currently running application.
+ *
+ * @return the control under the cursor or <code>null</code>
+ *
+ * @exception SWTException <ul>
+ * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
+ * <li>ERROR_DEVICE_DISPOSED - if the receiver has been disposed</li>
+ * </ul>
+ */
+public Control getCursorControl () {
+ checkDevice ();
+ POINT pt = new POINT ();
+ if (!OS.GetCursorPos (pt)) return null;
+ return findControl (OS.WindowFromPoint (pt));
+}
+
+/**
+ * Returns the location of the on-screen pointer relative
+ * to the top left corner of the screen.
+ *
+ * @return the cursor location
+ *
+ * @exception SWTException <ul>
+ * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
+ * <li>ERROR_DEVICE_DISPOSED - if the receiver has been disposed</li>
+ * </ul>
+ */
+public Point getCursorLocation () {
+ checkDevice ();
+ return DPIUtil.autoScaleDown(getCursorLocationInPixels());
+}
+
+Point getCursorLocationInPixels () {
+ POINT pt = new POINT ();
+ OS.GetCursorPos (pt);
+ return new Point (pt.x, pt.y);
+}
+
+/**
+ * Returns an array containing the recommended cursor sizes.
+ *
+ * @return the array of cursor sizes
+ *
+ * @exception SWTException <ul>
+ * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
+ * <li>ERROR_DEVICE_DISPOSED - if the receiver has been disposed</li>
+ * </ul>
+ *
+ * @since 3.0
+ */
+public Point [] getCursorSizes () {
+ checkDevice ();
+ return new Point [] {
+ new Point (OS.GetSystemMetrics (OS.SM_CXCURSOR), OS.GetSystemMetrics (OS.SM_CYCURSOR))};
+}
+
+/**
+ * Returns the default display. One is created (making the
+ * thread that invokes this method its user-interface thread)
+ * if it did not already exist.
+ *
+ * @return the default display
+ */
+public static Display getDefault () {
+ synchronized (Device.class) {
+ if (Default == null) Default = new Display ();
+ return Default;
+ }
+}
+
+/**
+ * @since 3.108
+ */
+@Override
+protected int getDeviceZoom() {
+ /*
+ * Win8.1 and above we should pick zoom for the primary monitor which always
+ * reflects the latest OS zoom value, for more details refer bug 537273.
+ */
+ if (OS.WIN32_VERSION >= OS.VERSION (6, 3)) {
+ return getPrimaryMonitor().getZoom();
+ }
+ /* Otherwise return Windows zoom level, as set during session login. */
+ return super.getDeviceZoom();
+}
+
+static boolean isValidClass (Class<?> clazz) {
+ String name = clazz.getName ();
+ int index = name.lastIndexOf ('.');
+ return name.substring (0, index + 1).equals (PACKAGE_PREFIX);
+}
+
+/**
+ * Returns the application defined property of the receiver
+ * with the specified name, or null if it has not been set.
+ * <p>
+ * Applications may have associated arbitrary objects with the
+ * receiver in this fashion. If the objects stored in the
+ * properties need to be notified when the display is disposed
+ * of, it is the application's responsibility to provide a
+ * <code>disposeExec()</code> handler which does so.
+ * </p>
+ *
+ * @param key the name of the property
+ * @return the value of the property or null if it has not been set
+ *
+ * @exception IllegalArgumentException <ul>
+ * <li>ERROR_NULL_ARGUMENT - if the key is null</li>
+ * </ul>
+ * @exception SWTException <ul>
+ * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
+ * <li>ERROR_DEVICE_DISPOSED - if the receiver has been disposed</li>
+ * </ul>
+ *
+ * @see #setData(String, Object)
+ * @see #disposeExec(Runnable)
+ */
+public Object getData (String key) {
+ checkDevice ();
+ if (key == null) error (SWT.ERROR_NULL_ARGUMENT);
+ if (key.equals (RUN_MESSAGES_IN_IDLE_KEY)) {
+ return runMessagesInIdle;
+ }
+ if (key.equals (RUN_MESSAGES_IN_MESSAGE_PROC_KEY)) {
+ return runMessagesInMessageProc;
+ }
+ if (key.equals (USE_OWNDC_KEY)) {
+ return useOwnDC;
+ }
+ if (key.equals (ACCEL_KEY_HIT)) {
+ return accelKeyHit;
+ }
+ if (keys == null) return null;
+ for (int i=0; i<keys.length; i++) {
+ if (keys [i].equals (key)) return values [i];
+ }
+ return null;
+}
+
+/**
+ * Returns the application defined, display specific data
+ * associated with the receiver, or null if it has not been
+ * set. The <em>display specific data</em> is a single,
+ * unnamed field that is stored with every display.
+ * <p>
+ * Applications may put arbitrary objects in this field. If
+ * the object stored in the display specific data needs to
+ * be notified when the display is disposed of, it is the
+ * application's responsibility to provide a
+ * <code>disposeExec()</code> handler which does so.
+ * </p>
+ *
+ * @return the display specific data
+ *
+ * @exception SWTException <ul>
+ * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
+ * <li>ERROR_DEVICE_DISPOSED - if the receiver has been disposed</li>
+ * </ul>
+ *
+ * @see #setData(Object)
+ * @see #disposeExec(Runnable)
+ */
+public Object getData () {
+ checkDevice ();
+ return data;
+}
+
+/**
+ * Returns the button dismissal alignment, one of <code>LEFT</code> or <code>RIGHT</code>.
+ * The button dismissal alignment is the ordering that should be used when positioning the
+ * default dismissal button for a dialog. For example, in a dialog that contains an OK and
+ * CANCEL button, on platforms where the button dismissal alignment is <code>LEFT</code>, the
+ * button ordering should be OK/CANCEL. When button dismissal alignment is <code>RIGHT</code>,
+ * the button ordering should be CANCEL/OK.
+ *
+ * @return the button dismissal order
+ *
+ * @exception SWTException <ul>
+ * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
+ * <li>ERROR_DEVICE_DISPOSED - if the receiver has been disposed</li>
+ * </ul>
+ *
+ * @since 2.1
+ */
+public int getDismissalAlignment () {
+ checkDevice ();
+ return SWT.LEFT;
+}
+
+
+/**
+ * Returns the longest duration, in milliseconds, between
+ * two mouse button clicks that will be considered a
+ * <em>double click</em> by the underlying operating system.
+ *
+ * @return the double click time
+ *
+ * @exception SWTException <ul>
+ * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
+ * <li>ERROR_DEVICE_DISPOSED - if the receiver has been disposed</li>
+ * </ul>
+ */
+public int getDoubleClickTime () {
+ checkDevice ();
+ return OS.GetDoubleClickTime ();
+}
+
+/**
+ * Returns the control which currently has keyboard focus,
+ * or null if keyboard events are not currently going to
+ * any of the controls built by the currently running
+ * application.
+ *
+ * @return the focus control or <code>null</code>
+ *
+ * @exception SWTException <ul>
+ * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
+ * <li>ERROR_DEVICE_DISPOSED - if the receiver has been disposed</li>
+ * </ul>
+ */
+public Control getFocusControl () {
+ checkDevice ();
+ if (focusControl != null && !focusControl.isDisposed ()) {
+ return focusControl;
+ }
+ return _getFocusControl ();
+}
+
+String getFontName (LOGFONT logFont) {
+ char[] chars = logFont.lfFaceName;
+ int index = 0;
+ while (index < chars.length) {
+ if (chars [index] == 0) break;
+ index++;
+ }
+ return new String (chars, 0, index);
+}
+
+/**
+ * Returns true when the high contrast mode is enabled.
+ * Otherwise, false is returned.
+ * <p>
+ * Note: This operation is a hint and is not supported on
+ * platforms that do not have this concept.
+ * </p>
+ *
+ * @return the high contrast mode
+ *
+ * @exception SWTException <ul>
+ * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
+ * <li>ERROR_DEVICE_DISPOSED - if the receiver has been disposed</li>
+ * </ul>
+ *
+ * @since 3.0
+ */
+public boolean getHighContrast () {
+ checkDevice ();
+ HIGHCONTRAST pvParam = new HIGHCONTRAST ();
+ pvParam.cbSize = HIGHCONTRAST.sizeof;
+ OS.SystemParametersInfo (OS.SPI_GETHIGHCONTRAST, 0, pvParam, 0);
+ return (pvParam.dwFlags & OS.HCF_HIGHCONTRASTON) != 0;
+}
+
+/**
+ * Returns the maximum allowed depth of icons on this display, in bits per pixel.
+ * On some platforms, this may be different than the actual depth of the display.
+ *
+ * @return the maximum icon depth
+ *
+ * @exception SWTException <ul>
+ * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
+ * <li>ERROR_DEVICE_DISPOSED - if the receiver has been disposed</li>
+ * </ul>
+ *
+ * @see Device#getDepth
+ */
+public int getIconDepth () {
+ checkDevice ();
+ if (getDepth () >= 24) return 32;
+
+ /* Use the character encoding for the default locale */
+ TCHAR buffer1 = new TCHAR (0, "Control Panel\\Desktop\\WindowMetrics", true); //$NON-NLS-1$
+
+ long [] phkResult = new long [1];
+ int result = OS.RegOpenKeyEx (OS.HKEY_CURRENT_USER, buffer1, 0, OS.KEY_READ, phkResult);
+ if (result != 0) return 4;
+ int depth = 4;
+ int [] lpcbData = new int [1];
+
+ /* Use the character encoding for the default locale */
+ TCHAR buffer2 = new TCHAR (0, "Shell Icon BPP", true); //$NON-NLS-1$
+ result = OS.RegQueryValueEx (phkResult [0], buffer2, 0, null, (TCHAR) null, lpcbData);
+ if (result == 0) {
+ TCHAR lpData = new TCHAR (0, lpcbData [0] / TCHAR.sizeof);
+ result = OS.RegQueryValueEx (phkResult [0], buffer2, 0, null, lpData, lpcbData);
+ if (result == 0) {
+ try {
+ depth = Integer.parseInt (lpData.toString (0, lpData.strlen ()));
+ } catch (NumberFormatException e) {}
+ }
+ }
+ OS.RegCloseKey (phkResult [0]);
+ return depth;
+}
+
+/**
+ * Returns an array containing the recommended icon sizes.
+ *
+ * @return the array of icon sizes
+ *
+ * @exception SWTException <ul>
+ * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
+ * <li>ERROR_DEVICE_DISPOSED - if the receiver has been disposed</li>
+ * </ul>
+ *
+ * @see Decorations#setImages(Image[])
+ *
+ * @since 3.0
+ */
+public Point [] getIconSizes () {
+ checkDevice ();
+ return new Point [] {
+ new Point (OS.GetSystemMetrics (OS.SM_CXSMICON), OS.GetSystemMetrics (OS.SM_CYSMICON)),
+ new Point (OS.GetSystemMetrics (OS.SM_CXICON), OS.GetSystemMetrics (OS.SM_CYICON)),
+ };
+}
+
+ImageList getImageList (int style, int width, int height) {
+ if (imageList == null) imageList = new ImageList [4];
+
+ int i = 0;
+ int length = imageList.length;
+ while (i < length) {
+ ImageList list = imageList [i];
+ if (list == null) break;
+ Point size = list.getImageSize();
+ if (size.x == width && size.y == height) {
+ if (list.getStyle () == style) {
+ list.addRef();
+ return list;
+ }
+ }
+ i++;
+ }
+
+ if (i == length) {
+ ImageList [] newList = new ImageList [length + 4];
+ System.arraycopy (imageList, 0, newList, 0, length);
+ imageList = newList;
+ }
+
+ ImageList list = new ImageList (style, width, height);
+ imageList [i] = list;
+ list.addRef();
+ return list;
+}
+
+ImageList getImageListToolBar (int style, int width, int height) {
+ if (toolImageList == null) toolImageList = new ImageList [4];
+
+ int i = 0;
+ int length = toolImageList.length;
+ while (i < length) {
+ ImageList list = toolImageList [i];
+ if (list == null) break;
+ Point size = list.getImageSize();
+ if (size.x == width && size.y == height) {
+ if (list.getStyle () == style) {
+ list.addRef();
+ return list;
+ }
+ }
+ i++;
+ }
+
+ if (i == length) {
+ ImageList [] newList = new ImageList [length + 4];
+ System.arraycopy (toolImageList, 0, newList, 0, length);
+ toolImageList = newList;
+ }
+
+ ImageList list = new ImageList (style, width, height);
+ toolImageList [i] = list;
+ list.addRef();
+ return list;
+}
+
+ImageList getImageListToolBarDisabled (int style, int width, int height) {
+ if (toolDisabledImageList == null) toolDisabledImageList = new ImageList [4];
+
+ int i = 0;
+ int length = toolDisabledImageList.length;
+ while (i < length) {
+ ImageList list = toolDisabledImageList [i];
+ if (list == null) break;
+ Point size = list.getImageSize();
+ if (size.x == width && size.y == height) {
+ if (list.getStyle () == style) {
+ list.addRef();
+ return list;
+ }
+ }
+ i++;
+ }
+
+ if (i == length) {
+ ImageList [] newList = new ImageList [length + 4];
+ System.arraycopy (toolDisabledImageList, 0, newList, 0, length);
+ toolDisabledImageList = newList;
+ }
+
+ ImageList list = new ImageList (style, width, height);
+ toolDisabledImageList [i] = list;
+ list.addRef();
+ return list;
+}
+
+ImageList getImageListToolBarHot (int style, int width, int height) {
+ if (toolHotImageList == null) toolHotImageList = new ImageList [4];
+
+ int i = 0;
+ int length = toolHotImageList.length;
+ while (i < length) {
+ ImageList list = toolHotImageList [i];
+ if (list == null) break;
+ Point size = list.getImageSize();
+ if (size.x == width && size.y == height) {
+ if (list.getStyle () == style) {
+ list.addRef();
+ return list;
+ }
+ }
+ i++;
+ }
+
+ if (i == length) {
+ ImageList [] newList = new ImageList [length + 4];
+ System.arraycopy (toolHotImageList, 0, newList, 0, length);
+ toolHotImageList = newList;
+ }
+
+ ImageList list = new ImageList (style, width, height);
+ toolHotImageList [i] = list;
+ list.addRef();
+ return list;
+}
+
+/**
+ * Returns <code>true</code> if the current OS theme has a dark appearance, else
+ * returns <code>false</code>.
+ * <p>
+ * Note: This operation is a hint and is not supported on platforms that do not
+ * have this concept.
+ * </p>
+ * <p>
+ * Note: Windows 10 onwards users can separately configure the theme for OS and
+ * Application level and this can be read from the Windows registry. Since the
+ * application needs to honor the application level theme, this API reads the
+ * Application level theme setting.
+ * </p>
+ *
+ * @return <code>true</code> if the current OS theme has a dark appearance, else
+ * returns <code>false</code>.
+ *
+ * @since 3.112
+ */
+public static boolean isSystemDarkTheme () {
+ boolean isDarkTheme = false;
+ /*
+ * Win10 onwards we can read the Dark Theme from the OS registry.
+ */
+ if (OS.WIN32_VERSION >= OS.VERSION (10, 0)) {
+ try {
+ int result = OS.readRegistryDword(OS.HKEY_CURRENT_USER,
+ "Software\\Microsoft\\Windows\\CurrentVersion\\Themes\\Personalize", "AppsUseLightTheme");
+ isDarkTheme = (result == 0);
+ } catch (Exception e) {
+ // Registry entry not found
+ }
+ }
+ return isDarkTheme;
+}
+
+int getLastEventTime () {
+ return OS.GetMessageTime ();
+}
+
+MenuItem getMenuItem (int id) {
+ if (items == null) return null;
+ id = id - ID_START;
+ if (0 <= id && id < items.length) return items [id];
+ return null;
+}
+
+int getMessageCount () {
+ /*
+ * On Windows10 (update 18272), an NPE is seen in below code which leads to a
+ * possible crash, adding a null check for synchronizer instance. For more
+ * details refer bug 540762
+ */
+ if (synchronizer != null) return synchronizer.getMessageCount ();
+ return 0;
+}
+
+
+Shell getModalShell () {
+ if (modalShells == null) return null;
+ int index = modalShells.length;
+ while (--index >= 0) {
+ Shell shell = modalShells [index];
+ if (shell != null) return shell;
+ }
+ return null;
+}
+
+Dialog getModalDialog () {
+ return modalDialog;
+}
+
+Monitor getMonitor (long hmonitor) {
+ MONITORINFO lpmi = new MONITORINFO ();
+ lpmi.cbSize = MONITORINFO.sizeof;
+ OS.GetMonitorInfo (hmonitor, lpmi);
+ Monitor monitor = new Monitor ();
+ monitor.handle = hmonitor;
+ Rectangle boundsInPixels = new Rectangle (lpmi.rcMonitor_left, lpmi.rcMonitor_top, lpmi.rcMonitor_right - lpmi.rcMonitor_left,lpmi.rcMonitor_bottom - lpmi.rcMonitor_top);
+ monitor.setBounds (DPIUtil.autoScaleDown (boundsInPixels));
+ Rectangle clientAreaInPixels = new Rectangle (lpmi.rcWork_left, lpmi.rcWork_top, lpmi.rcWork_right - lpmi.rcWork_left, lpmi.rcWork_bottom - lpmi.rcWork_top);
+ monitor.setClientArea (DPIUtil.autoScaleDown (clientAreaInPixels));
+ if (OS.WIN32_VERSION >= OS.VERSION (6, 3)) {
+ int [] dpiX = new int[1];
+ int [] dpiY = new int[1];
+ int result = OS.GetDpiForMonitor (monitor.handle, OS.MDT_EFFECTIVE_DPI, dpiX, dpiY);
+ result = (result == OS.S_OK) ? DPIUtil.mapDPIToZoom (dpiX[0]) : 100;
+ /*
+ * Always return true monitor zoom value as fetched from native, else will lead
+ * to scaling issue on OS Win8.1 and above, for more details refer bug 537614.
+ */
+ monitor.zoom = result;
+ } else {
+ monitor.zoom = getDeviceZoom ();
+ }
+ return monitor;
+}
+
+/**
+ * Returns an array of monitors attached to the device.
+ *
+ * @return the array of monitors
+ *
+ * @since 3.0
+ */
+public Monitor [] getMonitors () {
+ checkDevice ();
+ monitors = new Monitor [4];
+ Callback callback = new Callback (this, "monitorEnumProc", 4); //$NON-NLS-1$
+ long lpfnEnum = callback.getAddress ();
+ if (lpfnEnum == 0) error (SWT.ERROR_NO_MORE_CALLBACKS);
+ OS.EnumDisplayMonitors (0, null, lpfnEnum, 0);
+ callback.dispose ();
+ Monitor [] result = new Monitor [monitorCount];
+ System.arraycopy (monitors, 0, result, 0, monitorCount);
+ monitors = null;
+ monitorCount = 0;
+ return result;
+}
+
+long getMsgProc (long code, long wParam, long lParam) {
+ if (embeddedHwnd == 0) {
+ long hInstance = OS.GetModuleHandle (null);
+ embeddedHwnd = OS.CreateWindowEx (0,
+ windowClass,
+ null,
+ OS.WS_OVERLAPPED,
+ 0, 0, 0, 0,
+ 0,
+ 0,
+ hInstance,
+ null);
+ embeddedCallback = new Callback (this, "embeddedProc", 4); //$NON-NLS-1$
+ embeddedProc = embeddedCallback.getAddress ();
+ if (embeddedProc == 0) error (SWT.ERROR_NO_MORE_CALLBACKS);
+ OS.SetWindowLongPtr (embeddedHwnd, OS.GWLP_WNDPROC, embeddedProc);
+ }
+ if (code >= 0 && (wParam & OS.PM_REMOVE) != 0) {
+ MSG msg = new MSG ();
+ OS.MoveMemory (msg, lParam, MSG.sizeof);
+ switch (msg.message) {
+ case OS.WM_KEYDOWN:
+ case OS.WM_KEYUP:
+ case OS.WM_SYSKEYDOWN:
+ case OS.WM_SYSKEYUP: {
+ Control control = findControl (msg.hwnd);
+ if (control != null) {
+ long hHeap = OS.GetProcessHeap ();
+ long keyMsg = OS.HeapAlloc (hHeap, OS.HEAP_ZERO_MEMORY, MSG.sizeof);
+ OS.MoveMemory (keyMsg, msg, MSG.sizeof);
+ OS.PostMessage (hwndMessage, SWT_KEYMSG, wParam, keyMsg);
+ switch ((int)msg.wParam) {
+ case OS.VK_SHIFT:
+ case OS.VK_MENU:
+ case OS.VK_CONTROL:
+ case OS.VK_CAPITAL:
+ case OS.VK_NUMLOCK:
+ case OS.VK_SCROLL:
+ break;
+ default:
+ msg.message = OS.WM_NULL;
+ OS.MoveMemory (lParam, msg, MSG.sizeof);
+ }
+ }
+ }
+ }
+ }
+ return OS.CallNextHookEx (msgHook, (int)code, wParam, lParam);
+}
+
+/**
+ * Returns the primary monitor for that device.
+ *
+ * @return the primary monitor
+ *
+ * @since 3.0
+ */
+public Monitor getPrimaryMonitor () {
+ checkDevice ();
+ long hmonitor = OS.MonitorFromWindow (0, OS.MONITOR_DEFAULTTOPRIMARY);
+ return getMonitor (hmonitor);
+}
+
+/**
+ * Returns a (possibly empty) array containing all shells which have
+ * not been disposed and have the receiver as their display.
+ *
+ * @return the receiver's shells
+ *
+ * @exception SWTException <ul>
+ * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
+ * <li>ERROR_DEVICE_DISPOSED - if the receiver has been disposed</li>
+ * </ul>
+ */
+public Shell [] getShells () {
+ checkDevice ();
+ int index = 0;
+ Shell [] result = new Shell [16];
+ for (int i = 0; i < controlTable.length; i++) {
+ Control control = controlTable [i];
+ if (control != null && control instanceof Shell) {
+ int j = 0;
+ while (j < index) {
+ if (result [j] == control) break;
+ j++;
+ }
+ if (j == index) {
+ if (index == result.length) {
+ Shell [] newResult = new Shell [index + 16];
+ System.arraycopy (result, 0, newResult, 0, index);
+ result = newResult;
+ }
+ result [index++] = (Shell) control;
+ }
+ }
+ }
+ if (index == result.length) return result;
+ Shell [] newResult = new Shell [index];
+ System.arraycopy (result, 0, newResult, 0, index);
+ return newResult;
+}
+
+/**
+ * Gets the synchronizer used by the display.
+ *
+ * @return the receiver's synchronizer
+ *
+ * @exception SWTException <ul>
+ * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
+ * <li>ERROR_DEVICE_DISPOSED - if the receiver has been disposed</li>
+ * </ul>
+ *
+ * @since 3.4
+ */
+public Synchronizer getSynchronizer () {
+ checkDevice ();
+ return synchronizer;
+}
+
+/**
+ * Returns the thread that has invoked <code>syncExec</code>
+ * or null if no such runnable is currently being invoked by
+ * the user-interface thread.
+ * <p>
+ * Note: If a runnable invoked by asyncExec is currently
+ * running, this method will return null.
+ * </p>
+ *
+ * @return the receiver's sync-interface thread
+ *
+ * @exception SWTException <ul>
+ * <li>ERROR_DEVICE_DISPOSED - if the receiver has been disposed</li>
+ * </ul>
+ */
+public Thread getSyncThread () {
+ synchronized (Device.class) {
+ if (isDisposed ()) error (SWT.ERROR_DEVICE_DISPOSED);
+ return synchronizer.syncThread;
+ }
+}
+
+/**
+ * Returns the matching standard color for the given
+ * constant, which should be one of the color constants
+ * specified in class <code>SWT</code>. Any value other
+ * than one of the SWT color constants which is passed
+ * in will result in the color black. This color should
+ * not be free'd because it was allocated by the system,
+ * not the application.
+ *
+ * @param id the color constant
+ * @return the matching color
+ *
+ * @exception SWTException <ul>
+ * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
+ * <li>ERROR_DEVICE_DISPOSED - if the receiver has been disposed</li>
+ * </ul>
+ *
+ * @see SWT
+ */
+@Override
+public Color getSystemColor (int id) {
+ checkDevice ();
+ int pixel = 0x00000000;
+ switch (id) {
+ case SWT.COLOR_WIDGET_DARK_SHADOW: pixel = OS.GetSysColor (OS.COLOR_3DDKSHADOW); break;
+ case SWT.COLOR_WIDGET_DISABLED_FOREGROUND: pixel = OS.GetSysColor(OS.COLOR_GRAYTEXT); break;
+ case SWT.COLOR_WIDGET_NORMAL_SHADOW: pixel = OS.GetSysColor (OS.COLOR_3DSHADOW); break;
+ case SWT.COLOR_WIDGET_LIGHT_SHADOW: pixel = OS.GetSysColor (OS.COLOR_3DLIGHT); break;
+ case SWT.COLOR_WIDGET_HIGHLIGHT_SHADOW: pixel = OS.GetSysColor (OS.COLOR_3DHIGHLIGHT); break;
+ case SWT.COLOR_TEXT_DISABLED_BACKGROUND:
+ case SWT.COLOR_WIDGET_BACKGROUND: pixel = OS.GetSysColor (OS.COLOR_3DFACE); break;
+ case SWT.COLOR_WIDGET_BORDER: pixel = OS.GetSysColor (OS.COLOR_WINDOWFRAME); break;
+ case SWT.COLOR_WIDGET_FOREGROUND:
+ case SWT.COLOR_LIST_FOREGROUND: pixel = OS.GetSysColor (OS.COLOR_WINDOWTEXT); break;
+ case SWT.COLOR_LIST_BACKGROUND: pixel = OS.GetSysColor (OS.COLOR_WINDOW); break;
+ case SWT.COLOR_LIST_SELECTION: pixel = OS.GetSysColor (OS.COLOR_HIGHLIGHT); break;
+ case SWT.COLOR_LIST_SELECTION_TEXT: pixel = OS.GetSysColor (OS.COLOR_HIGHLIGHTTEXT);break;
+ case SWT.COLOR_LINK_FOREGROUND: pixel = OS.GetSysColor (OS.COLOR_HOTLIGHT);break;
+ case SWT.COLOR_INFO_FOREGROUND: pixel = OS.GetSysColor (OS.COLOR_INFOTEXT); break;
+ case SWT.COLOR_INFO_BACKGROUND: pixel = OS.GetSysColor (OS.COLOR_INFOBK); break;
+ case SWT.COLOR_TITLE_FOREGROUND: pixel = OS.GetSysColor (OS.COLOR_CAPTIONTEXT); break;
+ case SWT.COLOR_TITLE_BACKGROUND: pixel = OS.GetSysColor (OS.COLOR_ACTIVECAPTION); break;
+ case SWT.COLOR_TITLE_BACKGROUND_GRADIENT:
+ pixel = OS.GetSysColor (OS.COLOR_GRADIENTACTIVECAPTION);
+ if (pixel == 0) pixel = OS.GetSysColor (OS.COLOR_ACTIVECAPTION);
+ break;
+ case SWT.COLOR_TITLE_INACTIVE_FOREGROUND: pixel = OS.GetSysColor (OS.COLOR_INACTIVECAPTIONTEXT); break;
+ case SWT.COLOR_TITLE_INACTIVE_BACKGROUND: pixel = OS.GetSysColor (OS.COLOR_INACTIVECAPTION); break;
+ case SWT.COLOR_TITLE_INACTIVE_BACKGROUND_GRADIENT:
+ pixel = OS.GetSysColor (OS.COLOR_GRADIENTINACTIVECAPTION);
+ if (pixel == 0) pixel = OS.GetSysColor (OS.COLOR_INACTIVECAPTION);
+ break;
+ default:
+ return super.getSystemColor (id);
+ }
+ return Color.win32_new (this, pixel);
+}
+
+/**
+ * Returns the matching standard platform cursor for the given
+ * constant, which should be one of the cursor constants
+ * specified in class <code>SWT</code>. This cursor should
+ * not be free'd because it was allocated by the system,
+ * not the application. A value of <code>null</code> will
+ * be returned if the supplied constant is not an SWT cursor
+ * constant.
+ *
+ * @param id the SWT cursor constant
+ * @return the corresponding cursor or <code>null</code>
+ *
+ * @exception SWTException <ul>
+ * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
+ * <li>ERROR_DEVICE_DISPOSED - if the receiver has been disposed</li>
+ * </ul>
+ *
+ * @see SWT#CURSOR_ARROW
+ * @see SWT#CURSOR_WAIT
+ * @see SWT#CURSOR_CROSS
+ * @see SWT#CURSOR_APPSTARTING
+ * @see SWT#CURSOR_HELP
+ * @see SWT#CURSOR_SIZEALL
+ * @see SWT#CURSOR_SIZENESW
+ * @see SWT#CURSOR_SIZENS
+ * @see SWT#CURSOR_SIZENWSE
+ * @see SWT#CURSOR_SIZEWE
+ * @see SWT#CURSOR_SIZEN
+ * @see SWT#CURSOR_SIZES
+ * @see SWT#CURSOR_SIZEE
+ * @see SWT#CURSOR_SIZEW
+ * @see SWT#CURSOR_SIZENE
+ * @see SWT#CURSOR_SIZESE
+ * @see SWT#CURSOR_SIZESW
+ * @see SWT#CURSOR_SIZENW
+ * @see SWT#CURSOR_UPARROW
+ * @see SWT#CURSOR_IBEAM
+ * @see SWT#CURSOR_NO
+ * @see SWT#CURSOR_HAND
+ *
+ * @since 3.0
+ */
+public Cursor getSystemCursor (int id) {
+ checkDevice ();
+ if (!(0 <= id && id < cursors.length)) return null;
+ if (cursors [id] == null) {
+ cursors [id] = new Cursor (this, id);
+ }
+ return cursors [id];
+}
+
+/**
+ * Returns a reasonable font for applications to use.
+ * On some platforms, this will match the "default font"
+ * or "system font" if such can be found. This font
+ * should not be free'd because it was allocated by the
+ * system, not the application.
+ * <p>
+ * Typically, applications which want the default look
+ * should simply not set the font on the widgets they
+ * create. Widgets are always created with the correct
+ * default font for the class of user-interface component
+ * they represent.
+ * </p>
+ *
+ * @return a font
+ *
+ * @exception SWTException <ul>
+ * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
+ * <li>ERROR_DEVICE_DISPOSED - if the receiver has been disposed</li>
+ * </ul>
+ */
+@Override
+public Font getSystemFont () {
+ checkDevice ();
+ if (systemFont != null) return systemFont;
+ long hFont = 0;
+ NONCLIENTMETRICS info = new NONCLIENTMETRICS ();
+ info.cbSize = NONCLIENTMETRICS.sizeof;
+ if (OS.SystemParametersInfo (OS.SPI_GETNONCLIENTMETRICS, 0, info, 0)) {
+ LOGFONT logFont = info.lfMessageFont;
+ hFont = OS.CreateFontIndirect (logFont);
+ lfSystemFont = hFont != 0 ? logFont : null;
+ }
+ if (hFont == 0) hFont = OS.GetStockObject (OS.DEFAULT_GUI_FONT);
+ if (hFont == 0) hFont = OS.GetStockObject (OS.SYSTEM_FONT);
+ return systemFont = Font.win32_new (this, hFont);
+}
+
+/**
+ * Returns the matching standard platform image for the given
+ * constant, which should be one of the icon constants
+ * specified in class <code>SWT</code>. This image should
+ * not be free'd because it was allocated by the system,
+ * not the application. A value of <code>null</code> will
+ * be returned either if the supplied constant is not an
+ * SWT icon constant or if the platform does not define an
+ * image that corresponds to the constant.
+ *
+ * @param id the SWT icon constant
+ * @return the corresponding image or <code>null</code>
+ *
+ * @exception SWTException <ul>
+ * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
+ * <li>ERROR_DEVICE_DISPOSED - if the receiver has been disposed</li>
+ * </ul>
+ *
+ * @see SWT#ICON_ERROR
+ * @see SWT#ICON_INFORMATION
+ * @see SWT#ICON_QUESTION
+ * @see SWT#ICON_WARNING
+ * @see SWT#ICON_WORKING
+ *
+ * @since 3.0
+ */
+public Image getSystemImage (int id) {
+ checkDevice ();
+ switch (id) {
+ case SWT.ICON_ERROR: {
+ if (errorImage != null) return errorImage;
+ long hIcon = OS.LoadImage (0, OS.OIC_HAND, OS.IMAGE_ICON, 0, 0, OS.LR_SHARED);
+ return errorImage = Image.win32_new (this, SWT.ICON, hIcon);
+ }
+ case SWT.ICON_WORKING:
+ case SWT.ICON_INFORMATION: {
+ if (infoImage != null) return infoImage;
+ long hIcon = OS.LoadImage (0, OS.OIC_INFORMATION, OS.IMAGE_ICON, 0, 0, OS.LR_SHARED);
+ return infoImage = Image.win32_new (this, SWT.ICON, hIcon);
+ }
+ case SWT.ICON_QUESTION: {
+ if (questionImage != null) return questionImage;
+ long hIcon = OS.LoadImage (0, OS.OIC_QUES, OS.IMAGE_ICON, 0, 0, OS.LR_SHARED);
+ return questionImage = Image.win32_new (this, SWT.ICON, hIcon);
+ }
+ case SWT.ICON_WARNING: {
+ if (warningIcon != null) return warningIcon;
+ long hIcon = OS.LoadImage (0, OS.OIC_BANG, OS.IMAGE_ICON, 0, 0, OS.LR_SHARED);
+ return warningIcon = Image.win32_new (this, SWT.ICON, hIcon);
+ }
+ }
+ return null;
+}
+
+/**
+ * Returns the single instance of the system-provided menu for the application, or
+ * <code>null</code> on platforms where no menu is provided for the application.
+ *
+ * @return the system menu, or <code>null</code>
+ *
+ * @exception SWTException <ul>
+ * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
+ * <li>ERROR_DEVICE_DISPOSED - if the receiver has been disposed</li>
+ * </ul>
+ *
+ * @since 3.7
+ */
+public Menu getSystemMenu () {
+ checkDevice();
+ return null;
+}
+
+/**
+ * Returns the single instance of the system taskBar or null
+ * when there is no system taskBar available for the platform.
+ *
+ * @return the system taskBar or <code>null</code>
+ *
+ * @exception SWTException <ul>
+ * <li>ERROR_DEVICE_DISPOSED - if the receiver has been disposed</li>
+ * </ul>
+ *
+ * @since 3.6
+ */
+public TaskBar getSystemTaskBar () {
+ checkDevice ();
+ if (taskBar != null) return taskBar;
+ if (OS.WIN32_VERSION >= OS.VERSION (6, 1)) {
+ taskBar = new TaskBar (this, SWT.NONE);
+ }
+ return taskBar;
+}
+
+/**
+ * Returns the single instance of the system tray or null
+ * when there is no system tray available for the platform.
+ *
+ * @return the system tray or <code>null</code>
+ *
+ * @exception SWTException <ul>
+ * <li>ERROR_DEVICE_DISPOSED - if the receiver has been disposed</li>
+ * </ul>
+ *
+ * @since 3.0
+ */
+public Tray getSystemTray () {
+ checkDevice ();
+ if (tray == null) tray = new Tray (this, SWT.NONE);
+ return tray;
+}
+
+/**
+ * Returns the user-interface thread for the receiver.
+ *
+ * @return the receiver's user-interface thread
+ *
+ * @exception SWTException <ul>
+ * <li>ERROR_DEVICE_DISPOSED - if the receiver has been disposed</li>
+ * </ul>
+ */
+public Thread getThread () {
+ synchronized (Device.class) {
+ if (isDisposed ()) error (SWT.ERROR_DEVICE_DISPOSED);
+ return thread;
+ }
+}
+
+/**
+ * Returns a boolean indicating whether a touch-aware input device is
+ * attached to the system and is ready for use.
+ *
+ * @return <code>true</code> if a touch-aware input device is detected, or <code>false</code> otherwise
+ *
+ * @exception SWTException <ul>
+ * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
+ * <li>ERROR_DEVICE_DISPOSED - if the receiver has been disposed</li>
+ * </ul>
+ *
+ * @since 3.7
+ */
+public boolean getTouchEnabled () {
+ checkDevice();
+ int value = OS.GetSystemMetrics (OS.SM_DIGITIZER);
+ return (value & (OS.NID_READY | OS.NID_MULTI_INPUT)) == (OS.NID_READY | OS.NID_MULTI_INPUT);
+}
+
+long hButtonTheme () {
+ if (hButtonTheme != 0) return hButtonTheme;
+ return hButtonTheme = OS.OpenThemeData (hwndMessage, BUTTON);
+}
+
+long hEditTheme () {
+ if (hEditTheme != 0) return hEditTheme;
+ return hEditTheme = OS.OpenThemeData (hwndMessage, EDIT);
+}
+
+long hExplorerBarTheme () {
+ if (hExplorerBarTheme != 0) return hExplorerBarTheme;
+ return hExplorerBarTheme = OS.OpenThemeData (hwndMessage, EXPLORERBAR);
+}
+
+long hScrollBarTheme () {
+ if (hScrollBarTheme != 0) return hScrollBarTheme;
+ return hScrollBarTheme = OS.OpenThemeData (hwndMessage, SCROLLBAR);
+}
+
+long hTabTheme () {
+ if (hTabTheme != 0) return hTabTheme;
+ return hTabTheme = OS.OpenThemeData (hwndMessage, TAB);
+}
+
+/**
+ * Invokes platform specific functionality to allocate a new GC handle.
+ * <p>
+ * <b>IMPORTANT:</b> This method is <em>not</em> part of the public
+ * API for <code>Display</code>. It is marked public only so that it
+ * can be shared within the packages provided by SWT. It is not
+ * available on all platforms, and should never be called from
+ * application code.
+ * </p>
+ *
+ * @param data the platform specific GC data
+ * @return the platform specific GC handle
+ *
+ * @exception SWTException <ul>
+ * <li>ERROR_DEVICE_DISPOSED - if the receiver has been disposed</li>
+ * </ul>
+ * @exception SWTError <ul>
+ * <li>ERROR_NO_HANDLES if a handle could not be obtained for gc creation</li>
+ * </ul>
+ *
+ * @noreference This method is not intended to be referenced by clients.
+ */
+@Override
+public long internal_new_GC (GCData data) {
+ if (isDisposed()) error(SWT.ERROR_DEVICE_DISPOSED);
+ long hDC = OS.GetDC (0);
+ if (hDC == 0) error (SWT.ERROR_NO_HANDLES);
+ if (data != null) {
+ int mask = SWT.LEFT_TO_RIGHT | SWT.RIGHT_TO_LEFT;
+ if ((data.style & mask) != 0) {
+ data.layout = (data.style & SWT.RIGHT_TO_LEFT) != 0 ? OS.LAYOUT_RTL : 0;
+ } else {
+ data.style |= SWT.LEFT_TO_RIGHT;
+ }
+ data.device = this;
+ data.font = getSystemFont ();
+ }
+ return hDC;
+}
+
+/**
+ * Initializes any internal resources needed by the
+ * device.
+ * <p>
+ * This method is called after <code>create</code>.
+ * </p>
+ *
+ * @see #create
+ */
+@Override
+protected void init () {
+ super.init ();
+ DPIUtil.setDeviceZoom (getDeviceZoom ());
+
+ /* Set the application user model ID, if APP_NAME is non Default */
+ char [] appName = null;
+ if (APP_NAME != null && !"SWT".equalsIgnoreCase (APP_NAME)) {
+ if (OS.WIN32_VERSION >= OS.VERSION (6, 1)) {
+ int length = APP_NAME.length ();
+ appName = new char [length + 1];
+ APP_NAME.getChars (0, length, appName, 0);
+ long [] appID = new long [1];
+ if (OS.GetCurrentProcessExplicitAppUserModelID(appID) != 0) {
+ OS.SetCurrentProcessExplicitAppUserModelID (appName);
+ }
+ if (appID[0] != 0) OS.CoTaskMemFree(appID[0]);
+ }
+ }
+
+ /* Create the callbacks */
+ windowCallback = new Callback (this, "windowProc", 4); //$NON-NLS-1$
+ windowProc = windowCallback.getAddress ();
+ if (windowProc == 0) error (SWT.ERROR_NO_MORE_CALLBACKS);
+
+ /* Remember the current thread id */
+ threadId = OS.GetCurrentThreadId ();
+
+ /* Use the character encoding for the default locale */
+ windowClass = new TCHAR (0, WindowName + WindowClassCount, true);
+ windowShadowClass = new TCHAR (0, WindowShadowName + WindowClassCount, true);
+ windowOwnDCClass = new TCHAR (0, WindowOwnDCName + WindowClassCount, true);
+ WindowClassCount++;
+
+ /* Register the SWT window class */
+ long hInstance = OS.GetModuleHandle (null);
+ WNDCLASS lpWndClass = new WNDCLASS ();
+ lpWndClass.hInstance = hInstance;
+ lpWndClass.lpfnWndProc = windowProc;
+ lpWndClass.style = OS.CS_DBLCLKS;
+ lpWndClass.hCursor = OS.LoadCursor (0, OS.IDC_ARROW);
+ lpWndClass.hIcon = OS.LoadIcon (0, OS.IDI_APPLICATION);
+ OS.RegisterClass (windowClass, lpWndClass);
+
+ /* Register the SWT drop shadow window class */
+ lpWndClass.style |= OS.CS_DROPSHADOW;
+ OS.RegisterClass (windowShadowClass, lpWndClass);
+
+ /* Register the CS_OWNDC window class */
+ lpWndClass.style |= OS.CS_OWNDC;
+ OS.RegisterClass (windowOwnDCClass, lpWndClass);
+
+ /* Create the message only HWND */
+ hwndMessage = OS.CreateWindowEx (0,
+ windowClass,
+ null,
+ OS.WS_OVERLAPPED,
+ 0, 0, 0, 0,
+ 0,
+ 0,
+ hInstance,
+ null);
+ String title = "SWT_Window_"+APP_NAME;
+ OS.SetWindowText(hwndMessage, new TCHAR(0, title, true));
+ messageCallback = new Callback (this, "messageProc", 4); //$NON-NLS-1$
+ messageProc = messageCallback.getAddress ();
+ if (messageProc == 0) error (SWT.ERROR_NO_MORE_CALLBACKS);
+ OS.SetWindowLongPtr (hwndMessage, OS.GWLP_WNDPROC, messageProc);
+
+ /* Create the filter hook */
+ msgFilterCallback = new Callback (this, "msgFilterProc", 3); //$NON-NLS-1$
+ msgFilterProc = msgFilterCallback.getAddress ();
+ if (msgFilterProc == 0) error (SWT.ERROR_NO_MORE_CALLBACKS);
+ filterHook = OS.SetWindowsHookEx (OS.WH_MSGFILTER, msgFilterProc, 0, threadId);
+
+ /* Create the idle hook */
+ foregroundIdleCallback = new Callback (this, "foregroundIdleProc", 3); //$NON-NLS-1$
+ foregroundIdleProc = foregroundIdleCallback.getAddress ();
+ if (foregroundIdleProc == 0) error (SWT.ERROR_NO_MORE_CALLBACKS);
+ idleHook = OS.SetWindowsHookEx (OS.WH_FOREGROUNDIDLE, foregroundIdleProc, 0, threadId);
+
+ /* Register window messages */
+ TASKBARCREATED = OS.RegisterWindowMessage (new TCHAR (0, "TaskbarCreated", true)); //$NON-NLS-1$
+ TASKBARBUTTONCREATED = OS.RegisterWindowMessage (new TCHAR (0, "TaskbarButtonCreated", true)); //$NON-NLS-1$
+ SWT_RESTORECARET = OS.RegisterWindowMessage (new TCHAR (0, "SWT_RESTORECARET", true)); //$NON-NLS-1$
+ DI_GETDRAGIMAGE = OS.RegisterWindowMessage (new TCHAR (0, "ShellGetDragImage", true)); //$NON-NLS-1$
+ SWT_OPENDOC = OS.RegisterWindowMessage(new TCHAR (0, "SWT_OPENDOC", true)); //$NON-NLS-1$
+
+ /* Initialize OLE */
+ OS.OleInitialize (0);
+
+ if (appName != null) {
+ /* Delete any old jump list set for the ID */
+ long [] ppv = new long [1];
+ int hr = COM.CoCreateInstance (COM.CLSID_DestinationList, 0, COM.CLSCTX_INPROC_SERVER, COM.IID_ICustomDestinationList, ppv);
+ if (hr == OS.S_OK) {
+ ICustomDestinationList pList = new ICustomDestinationList (ppv [0]);
+ pList.DeleteList (appName);
+ pList.Release ();
+ }
+ }
+
+ /* Initialize buffered painting */
+ OS.BufferedPaintInit ();
+
+ /* Initialize the Widget Table */
+ indexTable = new int [GROW_SIZE];
+ controlTable = new Control [GROW_SIZE];
+ for (int i=0; i<GROW_SIZE-1; i++) indexTable [i] = i + 1;
+ indexTable [GROW_SIZE - 1] = -1;
+}
+
+/**
+ * Invokes platform specific functionality to dispose a GC handle.
+ * <p>
+ * <b>IMPORTANT:</b> This method is <em>not</em> part of the public
+ * API for <code>Display</code>. It is marked public only so that it
+ * can be shared within the packages provided by SWT. It is not
+ * available on all platforms, and should never be called from
+ * application code.
+ * </p>
+ *
+ * @param hDC the platform specific GC handle
+ * @param data the platform specific GC data
+ *
+ * @noreference This method is not intended to be referenced by clients.
+ */
+@Override
+public void internal_dispose_GC (long hDC, GCData data) {
+ OS.ReleaseDC (0, hDC);
+}
+
+boolean isXMouseActive () {
+ /*
+ * NOTE: X-Mouse is active when bit 1 of the UserPreferencesMask is set.
+ */
+ boolean xMouseActive = false;
+ try {
+ int result = OS.readRegistryDword(OS.HKEY_CURRENT_USER, "Control Panel\\Desktop", "UserPreferencesMask");
+ xMouseActive = (result & 0x01) != 0;
+ } catch (Exception e) {
+ // Registry entry not found
+ }
+ return xMouseActive;
+}
+
+boolean isValidThread () {
+ return thread == Thread.currentThread ();
+}
+
+/**
+ * Maps a point from one coordinate system to another.
+ * When the control is null, coordinates are mapped to
+ * the display.
+ * <p>
+ * NOTE: On right-to-left platforms where the coordinate
+ * systems are mirrored, special care needs to be taken
+ * when mapping coordinates from one control to another
+ * to ensure the result is correctly mirrored.
+ *
+ * Mapping a point that is the origin of a rectangle and
+ * then adding the width and height is not equivalent to
+ * mapping the rectangle. When one control is mirrored
+ * and the other is not, adding the width and height to a
+ * point that was mapped causes the rectangle to extend
+ * in the wrong direction. Mapping the entire rectangle
+ * instead of just one point causes both the origin and
+ * the corner of the rectangle to be mapped.
+ * </p>
+ *
+ * @param from the source <code>Control</code> or <code>null</code>
+ * @param to the destination <code>Control</code> or <code>null</code>
+ * @param point to be mapped
+ * @return point with mapped coordinates
+ *
+ * @exception IllegalArgumentException <ul>
+ * <li>ERROR_NULL_ARGUMENT - if the point is null</li>
+ * <li>ERROR_INVALID_ARGUMENT - if the Control from or the Control to have been disposed</li>
+ * </ul>
+ * @exception SWTException <ul>
+ * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
+ * <li>ERROR_DEVICE_DISPOSED - if the receiver has been disposed</li>
+ * </ul>
+ *
+ * @since 2.1.2
+ */
+public Point map (Control from, Control to, Point point) {
+ checkDevice ();
+ if (point == null) error (SWT.ERROR_NULL_ARGUMENT);
+ point = DPIUtil.autoScaleUp(point);
+ return DPIUtil.autoScaleDown(mapInPixels(from, to, point));
+}
+
+Point mapInPixels (Control from, Control to, Point point) {
+ return mapInPixels (from, to, point.x, point.y);
+}
+
+/**
+ * Maps a point from one coordinate system to another.
+ * When the control is null, coordinates are mapped to
+ * the display.
+ * <p>
+ * NOTE: On right-to-left platforms where the coordinate
+ * systems are mirrored, special care needs to be taken
+ * when mapping coordinates from one control to another
+ * to ensure the result is correctly mirrored.
+ *
+ * Mapping a point that is the origin of a rectangle and
+ * then adding the width and height is not equivalent to
+ * mapping the rectangle. When one control is mirrored
+ * and the other is not, adding the width and height to a
+ * point that was mapped causes the rectangle to extend
+ * in the wrong direction. Mapping the entire rectangle
+ * instead of just one point causes both the origin and
+ * the corner of the rectangle to be mapped.
+ * </p>
+ *
+ * @param from the source <code>Control</code> or <code>null</code>
+ * @param to the destination <code>Control</code> or <code>null</code>
+ * @param x coordinates to be mapped
+ * @param y coordinates to be mapped
+ * @return point with mapped coordinates
+ *
+ * @exception IllegalArgumentException <ul>
+ * <li>ERROR_INVALID_ARGUMENT - if the Control from or the Control to have been disposed</li>
+ * </ul>
+ * @exception SWTException <ul>
+ * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
+ * <li>ERROR_DEVICE_DISPOSED - if the receiver has been disposed</li>
+ * </ul>
+ *
+ * @since 2.1.2
+ */
+public Point map (Control from, Control to, int x, int y) {
+ checkDevice ();
+ x = DPIUtil.autoScaleUp(x);
+ y = DPIUtil.autoScaleUp(y);
+ return DPIUtil.autoScaleDown(mapInPixels(from, to, x, y));
+}
+
+Point mapInPixels (Control from, Control to, int x, int y) {
+ if (from != null && from.isDisposed()) error (SWT.ERROR_INVALID_ARGUMENT);
+ if (to != null && to.isDisposed()) error (SWT.ERROR_INVALID_ARGUMENT);
+ if (from == to) return new Point (x, y);
+ long hwndFrom = from != null ? from.handle : 0;
+ long hwndTo = to != null ? to.handle : 0;
+ POINT point = new POINT ();
+ point.x = x;
+ point.y = y;
+ OS.MapWindowPoints (hwndFrom, hwndTo, point, 1);
+ return new Point (point.x, point.y);
+}
+
+/**
+ * Maps a point from one coordinate system to another.
+ * When the control is null, coordinates are mapped to
+ * the display.
+ * <p>
+ * NOTE: On right-to-left platforms where the coordinate
+ * systems are mirrored, special care needs to be taken
+ * when mapping coordinates from one control to another
+ * to ensure the result is correctly mirrored.
+ *
+ * Mapping a point that is the origin of a rectangle and
+ * then adding the width and height is not equivalent to
+ * mapping the rectangle. When one control is mirrored
+ * and the other is not, adding the width and height to a
+ * point that was mapped causes the rectangle to extend
+ * in the wrong direction. Mapping the entire rectangle
+ * instead of just one point causes both the origin and
+ * the corner of the rectangle to be mapped.
+ * </p>
+ *
+ * @param from the source <code>Control</code> or <code>null</code>
+ * @param to the destination <code>Control</code> or <code>null</code>
+ * @param rectangle to be mapped
+ * @return rectangle with mapped coordinates
+ *
+ * @exception IllegalArgumentException <ul>
+ * <li>ERROR_NULL_ARGUMENT - if the rectangle is null</li>
+ * <li>ERROR_INVALID_ARGUMENT - if the Control from or the Control to have been disposed</li>
+ * </ul>
+ * @exception SWTException <ul>
+ * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
+ * <li>ERROR_DEVICE_DISPOSED - if the receiver has been disposed</li>
+ * </ul>
+ *
+ * @since 2.1.2
+ */
+public Rectangle map (Control from, Control to, Rectangle rectangle) {
+ checkDevice ();
+ if (rectangle == null) error (SWT.ERROR_NULL_ARGUMENT);
+ rectangle = DPIUtil.autoScaleUp(rectangle);
+ return DPIUtil.autoScaleDown(mapInPixels(from, to, rectangle));
+}
+
+Rectangle mapInPixels (Control from, Control to, Rectangle rectangle) {
+ return mapInPixels (from, to, rectangle.x, rectangle.y, rectangle.width, rectangle.height);
+}
+
+/**
+ * Maps a point from one coordinate system to another.
+ * When the control is null, coordinates are mapped to
+ * the display.
+ * <p>
+ * NOTE: On right-to-left platforms where the coordinate
+ * systems are mirrored, special care needs to be taken
+ * when mapping coordinates from one control to another
+ * to ensure the result is correctly mirrored.
+ *
+ * Mapping a point that is the origin of a rectangle and
+ * then adding the width and height is not equivalent to
+ * mapping the rectangle. When one control is mirrored
+ * and the other is not, adding the width and height to a
+ * point that was mapped causes the rectangle to extend
+ * in the wrong direction. Mapping the entire rectangle
+ * instead of just one point causes both the origin and
+ * the corner of the rectangle to be mapped.
+ * </p>
+ *
+ * @param from the source <code>Control</code> or <code>null</code>
+ * @param to the destination <code>Control</code> or <code>null</code>
+ * @param x coordinates to be mapped
+ * @param y coordinates to be mapped
+ * @param width coordinates to be mapped
+ * @param height coordinates to be mapped
+ * @return rectangle with mapped coordinates
+ *
+ * @exception IllegalArgumentException <ul>
+ * <li>ERROR_INVALID_ARGUMENT - if the Control from or the Control to have been disposed</li>
+ * </ul>
+ * @exception SWTException <ul>
+ * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
+ * <li>ERROR_DEVICE_DISPOSED - if the receiver has been disposed</li>
+ * </ul>
+ *
+ * @since 2.1.2
+ */
+public Rectangle map (Control from, Control to, int x, int y, int width, int height) {
+ checkDevice ();
+ x = DPIUtil.autoScaleUp(x);
+ y = DPIUtil.autoScaleUp(y);
+ width = DPIUtil.autoScaleUp(width);
+ height = DPIUtil.autoScaleUp(height);
+ return DPIUtil.autoScaleDown(mapInPixels(from, to, x, y, width, height));
+}
+
+Rectangle mapInPixels (Control from, Control to, int x, int y, int width, int height) {
+ if (from != null && from.isDisposed()) error (SWT.ERROR_INVALID_ARGUMENT);
+ if (to != null && to.isDisposed()) error (SWT.ERROR_INVALID_ARGUMENT);
+ if (from == to) return new Rectangle (x, y, width, height);
+ long hwndFrom = from != null ? from.handle : 0;
+ long hwndTo = to != null ? to.handle : 0;
+ RECT rect = new RECT ();
+ rect.left = x;
+ rect.top = y;
+ rect.right = x + width;
+ rect.bottom = y + height;
+ OS.MapWindowPoints (hwndFrom, hwndTo, rect, 2);
+ return new Rectangle (rect.left, rect.top, rect.right - rect.left, rect.bottom - rect.top);
+}
+
+long messageProc (long hwnd, long msg, long wParam, long lParam) {
+ switch ((int)msg) {
+ case SWT_RUNASYNC: {
+ if (runMessagesInIdle) runAsyncMessages (false);
+ break;
+ }
+ case SWT_KEYMSG: {
+ boolean consumed = false;
+ MSG keyMsg = new MSG ();
+ OS.MoveMemory (keyMsg, lParam, MSG.sizeof);
+ Control control = findControl (keyMsg.hwnd);
+ if (control != null) {
+ /*
+ * Feature in Windows. When the user types an accent key such
+ * as ^ in order to get an accented character on a German keyboard,
+ * calling TranslateMessage(), ToUnicode() or ToAscii() consumes
+ * the key. This means that a subsequent call to TranslateMessage()
+ * will see a regular key rather than the accented key. The fix
+ * is to use MapVirtualKey() and VkKeyScan () to detect an accent
+ * and avoid calls to TranslateMessage().
+ */
+ boolean accentKey = false;
+ switch (keyMsg.message) {
+ case OS.WM_KEYDOWN:
+ case OS.WM_SYSKEYDOWN: {
+ switch ((int)keyMsg.wParam) {
+ case OS.VK_SHIFT:
+ case OS.VK_MENU:
+ case OS.VK_CONTROL:
+ case OS.VK_CAPITAL:
+ case OS.VK_NUMLOCK:
+ case OS.VK_SCROLL:
+ break;
+ default: {
+ int mapKey = OS.MapVirtualKey ((int)keyMsg.wParam, 2);
+ if (mapKey != 0) {
+ accentKey = (mapKey & 0x80000000) != 0;
+ if (!accentKey) {
+ for (int i=0; i<ACCENTS.length; i++) {
+ int value = OS.VkKeyScan (ACCENTS [i]);
+ if (value != -1 && (value & 0xFF) == keyMsg.wParam) {
+ int state = value >> 8;
+ if ((OS.GetKeyState (OS.VK_SHIFT) < 0) == ((state & 0x1) != 0) &&
+ (OS.GetKeyState (OS.VK_CONTROL) < 0) == ((state & 0x2) != 0) &&
+ (OS.GetKeyState (OS.VK_MENU) < 0) == ((state & 0x4) != 0)) {
+ if ((state & 0x7) != 0) accentKey = true;
+ break;
+ }
+ }
+ }
+ }
+ }
+ break;
+ }
+ }
+ break;
+ }
+ }
+ if (!accentKey && !ignoreNextKey) {
+ keyMsg.hwnd = control.handle;
+ int flags = OS.PM_REMOVE | OS.PM_NOYIELD | OS.PM_QS_INPUT | OS.PM_QS_POSTMESSAGE;
+ do {
+ if (!(consumed |= filterMessage (keyMsg))) {
+ OS.TranslateMessage (keyMsg);
+ consumed |= OS.DispatchMessage (keyMsg) == 1;
+ }
+ } while (OS.PeekMessage (keyMsg, keyMsg.hwnd, OS.WM_KEYFIRST, OS.WM_KEYLAST, flags));
+ }
+ switch (keyMsg.message) {
+ case OS.WM_KEYDOWN:
+ case OS.WM_SYSKEYDOWN: {
+ switch ((int)keyMsg.wParam) {
+ case OS.VK_SHIFT:
+ case OS.VK_MENU:
+ case OS.VK_CONTROL:
+ case OS.VK_CAPITAL:
+ case OS.VK_NUMLOCK:
+ case OS.VK_SCROLL:
+ break;
+ default: {
+ ignoreNextKey = accentKey;
+ break;
+ }
+ }
+ }
+ }
+ }
+ switch ((int)keyMsg.wParam) {
+ case OS.VK_SHIFT:
+ case OS.VK_MENU:
+ case OS.VK_CONTROL:
+ case OS.VK_CAPITAL:
+ case OS.VK_NUMLOCK:
+ case OS.VK_SCROLL:
+ consumed = true;
+ }
+ if (consumed) {
+ long hHeap = OS.GetProcessHeap ();
+ OS.HeapFree (hHeap, 0, lParam);
+ } else {
+ OS.PostMessage (embeddedHwnd, SWT_KEYMSG, wParam, lParam);
+ }
+ return 0;
+ }
+ case SWT_TRAYICONMSG: {
+ if (tray != null) {
+ TrayItem [] items = tray.items;
+ for (int i=0; i<items.length; i++) {
+ TrayItem item = items [i];
+ if (item != null && item.id == wParam) {
+ return item.messageProc (hwnd, (int)msg, wParam, lParam);
+ }
+ }
+ }
+ return 0;
+ }
+ case OS.WM_ACTIVATEAPP: {
+ /*
+ * Feature in Windows. When multiple shells are
+ * disabled and one of the shells has an enabled
+ * dialog child and the user selects a disabled
+ * shell that does not have the enabled dialog
+ * child using the Task bar, Windows brings the
+ * disabled shell to the front. As soon as the
+ * user clicks on the disabled shell, the enabled
+ * dialog child comes to the front. This behavior
+ * is unspecified and seems strange. Normally, a
+ * disabled shell is frozen on the screen and the
+ * user cannot change the z-order by clicking with
+ * the mouse. The fix is to look for WM_ACTIVATEAPP
+ * and force the enabled dialog child to the front.
+ * This is typically what the user is expecting.
+ *
+ * NOTE: If the modal shell is disabled for any
+ * reason, it should not be brought to the front.
+ */
+ if (wParam != 0) {
+ if (!isXMouseActive ()) {
+ long hwndActive = OS.GetActiveWindow ();
+ if (hwndActive != 0 && OS.IsWindowEnabled (hwndActive)) break;
+ Shell modal = modalDialog != null ? modalDialog.parent : getModalShell ();
+ if (modal != null && !modal.isDisposed ()) {
+ long hwndModal = modal.handle;
+ if (OS.IsWindowEnabled (hwndModal)) {
+ modal.bringToTop ();
+ if (modal.isDisposed ()) break;
+ }
+ long hwndPopup = OS.GetLastActivePopup (hwndModal);
+ if (hwndPopup != 0 && hwndPopup != modal.handle) {
+ if (getControl (hwndPopup) == null) {
+ if (OS.IsWindowEnabled (hwndPopup)) {
+ OS.SetActiveWindow (hwndPopup);
+ }
+ }
+ }
+ }
+ }
+ }
+ break;
+ }
+ case OS.WM_ENDSESSION: {
+ if (wParam != 0) {
+ dispose ();
+ /*
+ * When the session is ending, no SWT program can continue
+ * to run. In order to avoid running code after the display
+ * has been disposed, exit from Java.
+ */
+ /* This code is intentionally commented */
+// System.exit (0);
+ }
+ break;
+ }
+ case OS.WM_QUERYENDSESSION: {
+ Event event = new Event ();
+ sendEvent (SWT.Close, event);
+ if (!event.doit) return 0;
+ break;
+ }
+ case OS.WM_DWMCOLORIZATIONCOLORCHANGED:
+ case OS.WM_SETTINGCHANGE: {
+ /* Set the initial timer or push the time out period forward */
+ OS.SetTimer (hwndMessage, SETTINGS_ID, SETTINGS_DELAY, 0);
+ break;
+ }
+ case OS.WM_THEMECHANGED: {
+ if (hButtonTheme != 0) OS.CloseThemeData (hButtonTheme);
+ if (hEditTheme != 0) OS.CloseThemeData (hEditTheme);
+ if (hExplorerBarTheme != 0) OS.CloseThemeData (hExplorerBarTheme);
+ if (hScrollBarTheme != 0) OS.CloseThemeData (hScrollBarTheme);
+ if (hTabTheme != 0) OS.CloseThemeData (hTabTheme);
+ hButtonTheme = hEditTheme = hExplorerBarTheme = hScrollBarTheme = hTabTheme = 0;
+ break;
+ }
+ case OS.WM_TIMER: {
+ if (wParam == SETTINGS_ID) {
+ OS.KillTimer (hwndMessage, SETTINGS_ID);
+ runSettings ();
+ } else {
+ runTimer (wParam);
+ }
+ break;
+ }
+ default: {
+ if ((int)msg == TASKBARCREATED) {
+ if (tray != null) {
+ TrayItem [] items = tray.items;
+ for (int i=0; i<items.length; i++) {
+ TrayItem item = items [i];
+ if (item != null) item.recreate ();
+ }
+ }
+ }
+ if ((int)msg == SWT_OPENDOC) {
+ String filename = getSharedData((int)wParam, (int)lParam);
+ if (filename != null) {
+ if (filename.startsWith (TASKBAR_EVENT)) {
+ String text = filename.substring (TASKBAR_EVENT.length ());
+ int id = Integer.parseInt (text);
+ MenuItem item = getMenuItem (id);
+ if (item != null) {
+ item.sendSelectionEvent (SWT.Selection);
+ }
+ } else {
+ Event event = new Event ();
+ event.text = filename;
+ try {
+ new URI (filename);
+ sendEvent (SWT.OpenUrl, event);
+ } catch (URISyntaxException e) {
+ sendEvent (SWT.OpenDocument, event);
+ }
+ }
+ wakeThread ();
+ }
+ }
+ }
+ }
+ return OS.DefWindowProc (hwnd, (int)msg, wParam, lParam);
+}
+
+String getSharedData(int pid, int handle) {
+ long [] mapHandle = new long [1];
+ if (pid == OS.GetCurrentProcessId()) {
+ mapHandle[0] = handle;
+ } else {
+ long processHandle = OS.OpenProcess(OS.PROCESS_VM_READ|OS.PROCESS_DUP_HANDLE, false, pid);
+ if (processHandle == 0) return null;
+ OS.DuplicateHandle(processHandle, handle, OS.GetCurrentProcess(), mapHandle, OS.DUPLICATE_SAME_ACCESS, false, OS.DUPLICATE_SAME_ACCESS);
+ OS.CloseHandle(processHandle);
+ }
+
+ long sharedData = OS.MapViewOfFile(mapHandle[0], OS.FILE_MAP_READ, 0, 0, 0);
+ if (sharedData == 0) return null;
+ int length = OS.wcslen (sharedData);
+ TCHAR buffer = new TCHAR (0, length);
+ int byteCount = buffer.length () * TCHAR.sizeof;
+ OS.MoveMemory (buffer, sharedData, byteCount);
+ String result = buffer.toString (0, length);
+ OS.UnmapViewOfFile(sharedData);
+ if (handle != mapHandle[0]) {
+ OS.CloseHandle(mapHandle[0]);
+ }
+ return result;
+}
+
+long monitorEnumProc (long hmonitor, long hdc, long lprcMonitor, long dwData) {
+ if (monitorCount >= monitors.length) {
+ Monitor[] newMonitors = new Monitor [monitors.length + 4];
+ System.arraycopy (monitors, 0, newMonitors, 0, monitors.length);
+ monitors = newMonitors;
+ }
+ monitors [monitorCount++] = getMonitor (hmonitor);
+ return 1;
+}
+
+long msgFilterProc (long code, long wParam, long lParam) {
+ switch ((int)code) {
+ case OS.MSGF_COMMCTRL_BEGINDRAG: {
+ if (!runDragDrop && !dragCancelled) {
+ OS.MoveMemory (hookMsg, lParam, MSG.sizeof);
+ if (hookMsg.message == OS.WM_MOUSEMOVE) {
+ dragCancelled = true;
+ OS.SendMessage (hookMsg.hwnd, OS.WM_CANCELMODE, 0, 0);
+ }
+ }
+ break;
+ }
+ /*
+ * Feature in Windows. For some reason, when the user clicks
+ * a table or tree, the Windows hook WH_MSGFILTER is sent when
+ * an input event from a dialog box, message box, menu, or scroll
+ * bar did not occur, causing async messages to run at the wrong
+ * time. The fix is to check the message filter code.
+ */
+ case OS.MSGF_DIALOGBOX:
+ case OS.MSGF_MAINLOOP:
+ case OS.MSGF_MENU:
+ case OS.MSGF_MOVE:
+ case OS.MSGF_MESSAGEBOX:
+ case OS.MSGF_NEXTWINDOW:
+ case OS.MSGF_SCROLLBAR:
+ case OS.MSGF_SIZE: {
+ OS.MoveMemory (hookMsg, lParam, MSG.sizeof);
+ if (hookMsg.message == OS.WM_NULL) {
+ MSG msg = new MSG ();
+ int flags = OS.PM_NOREMOVE | OS.PM_NOYIELD | OS.PM_QS_INPUT | OS.PM_QS_POSTMESSAGE;
+ if (!OS.PeekMessage (msg, 0, 0, 0, flags)) {
+ if (runAsyncMessages (false)) wakeThread ();
+ }
+ }
+ break;
+ }
+ }
+ return OS.CallNextHookEx (filterHook, (int)code, wParam, lParam);
+}
+
+int numpadKey (int key) {
+ switch (key) {
+ case OS.VK_NUMPAD0: return '0';
+ case OS.VK_NUMPAD1: return '1';
+ case OS.VK_NUMPAD2: return '2';
+ case OS.VK_NUMPAD3: return '3';
+ case OS.VK_NUMPAD4: return '4';
+ case OS.VK_NUMPAD5: return '5';
+ case OS.VK_NUMPAD6: return '6';
+ case OS.VK_NUMPAD7: return '7';
+ case OS.VK_NUMPAD8: return '8';
+ case OS.VK_NUMPAD9: return '9';
+ case OS.VK_MULTIPLY: return '*';
+ case OS.VK_ADD: return '+';
+ case OS.VK_SEPARATOR: return '\0';
+ case OS.VK_SUBTRACT: return '-';
+ case OS.VK_DECIMAL: return '.';
+ case OS.VK_DIVIDE: return '/';
+ }
+ return 0;
+}
+
+/**
+ * Generate a low level system event.
+ *
+ * <code>post</code> is used to generate low level keyboard
+ * and mouse events. The intent is to enable automated UI
+ * testing by simulating the input from the user. Most
+ * SWT applications should never need to call this method.
+ * <p>
+ * Note that this operation can fail when the operating system
+ * fails to generate the event for any reason. For example,
+ * this can happen when there is no such key or mouse button
+ * or when the system event queue is full.
+ * </p>
+ * <p>
+ * <b>Event Types:</b>
+ * <p>KeyDown, KeyUp
+ * <p>The following fields in the <code>Event</code> apply:
+ * <ul>
+ * <li>(in) type KeyDown or KeyUp</li></ul>
+ * <p> Either one of:</p>
+ * <ul><li>(in) character a character that corresponds to a keyboard key</li>
+ * <li>(in) keyCode the key code of the key that was typed,
+ * as defined by the key code constants in class <code>SWT</code></li></ul>
+ * <p> Optional (on some platforms): </p>
+ * <ul><li>(in) stateMask the state of the keyboard modifier,
+ * as defined by the key code constants in class <code>SWT</code>
+ * </li>
+ * </ul>
+ * <p>MouseDown, MouseUp</p>
+ * <p>The following fields in the <code>Event</code> apply:
+ * <ul>
+ * <li>(in) type MouseDown or MouseUp
+ * <li>(in) button the button that is pressed or released
+ * </ul>
+ * <p>MouseMove</p>
+ * <p>The following fields in the <code>Event</code> apply:
+ * <ul>
+ * <li>(in) type MouseMove</li>
+ * <li>(in) x the x coordinate to move the mouse pointer to in screen coordinates</li>
+ * <li>(in) y the y coordinate to move the mouse pointer to in screen coordinates</li>
+ * </ul>
+ * <p>MouseWheel</p>
+ * <p>The following fields in the <code>Event</code> apply:</p>
+ * <ul>
+ * <li>(in) type MouseWheel</li>
+ * <li>(in) detail either SWT.SCROLL_LINE or SWT.SCROLL_PAGE</li>
+ * <li>(in) count the number of lines or pages to scroll</li>
+ * </ul>
+ *
+ * @param event the event to be generated
+ *
+ * @return true if the event was generated or false otherwise
+ *
+ * @exception IllegalArgumentException <ul>
+ * <li>ERROR_NULL_ARGUMENT - if the event is null</li>
+ * </ul>
+ * @exception SWTException <ul>
+ * <li>ERROR_DEVICE_DISPOSED - if the receiver has been disposed</li>
+ * </ul>
+ *
+ * @since 3.0
+ *
+ */
+public boolean post (Event event) {
+ synchronized (Device.class) {
+ if (isDisposed ()) error (SWT.ERROR_DEVICE_DISPOSED);
+ if (event == null) error (SWT.ERROR_NULL_ARGUMENT);
+ int type = event.type;
+ switch (type){
+ case SWT.KeyDown:
+ case SWT.KeyUp: {
+ KEYBDINPUT inputs = new KEYBDINPUT ();
+ inputs.wVk = (short) untranslateKey (event.keyCode);
+ if (inputs.wVk == 0) {
+ char key = event.character;
+ switch (key) {
+ case SWT.BS: inputs.wVk = (short) OS.VK_BACK; break;
+ case SWT.CR: inputs.wVk = (short) OS.VK_RETURN; break;
+ case SWT.DEL: inputs.wVk = (short) OS.VK_DELETE; break;
+ case SWT.ESC: inputs.wVk = (short) OS.VK_ESCAPE; break;
+ case SWT.TAB: inputs.wVk = (short) OS.VK_TAB; break;
+ /*
+ * Since there is no LF key on the keyboard, do not attempt
+ * to map LF to CR or attempt to post an LF key.
+ */
+// case SWT.LF: inputs.wVk = (short) OS.VK_RETURN; break;
+ case SWT.LF: return false;
+ default: {
+ inputs.wVk = OS.VkKeyScan ((short) key);
+ if (inputs.wVk == -1) return false;
+ inputs.wVk &= 0xFF;
+ }
+ }
+ }
+ inputs.dwFlags = type == SWT.KeyUp ? OS.KEYEVENTF_KEYUP : 0;
+ switch (inputs.wVk) {
+ case OS.VK_INSERT:
+ case OS.VK_DELETE:
+ case OS.VK_HOME:
+ case OS.VK_END:
+ case OS.VK_PRIOR:
+ case OS.VK_NEXT:
+ case OS.VK_UP:
+ case OS.VK_DOWN:
+ case OS.VK_LEFT:
+ case OS.VK_RIGHT:
+ case OS.VK_NUMLOCK:
+ case OS.VK_SNAPSHOT:
+ case OS.VK_CANCEL:
+ case OS.VK_DIVIDE:
+ inputs.dwFlags |= OS.KEYEVENTF_EXTENDEDKEY;
+ }
+ long hHeap = OS.GetProcessHeap ();
+ long pInputs = OS.HeapAlloc (hHeap, OS.HEAP_ZERO_MEMORY, INPUT.sizeof);
+ OS.MoveMemory(pInputs, new int[] {OS.INPUT_KEYBOARD}, 4);
+ //TODO - DWORD type of INPUT structure aligned to 8 bytes on 64 bit
+ OS.MoveMemory (pInputs + C.PTR_SIZEOF, inputs, KEYBDINPUT.sizeof);
+ boolean result = OS.SendInput (1, pInputs, INPUT.sizeof) != 0;
+ OS.HeapFree (hHeap, 0, pInputs);
+ return result;
+ }
+ case SWT.MouseDown:
+ case SWT.MouseMove:
+ case SWT.MouseUp:
+ case SWT.MouseWheel: {
+ MOUSEINPUT inputs = new MOUSEINPUT ();
+ if (type == SWT.MouseMove){
+ inputs.dwFlags = OS.MOUSEEVENTF_MOVE | OS.MOUSEEVENTF_ABSOLUTE | OS.MOUSEEVENTF_VIRTUALDESK;
+ int x = OS.GetSystemMetrics (OS.SM_XVIRTUALSCREEN);
+ int y = OS.GetSystemMetrics (OS.SM_YVIRTUALSCREEN);
+ int width = OS.GetSystemMetrics (OS.SM_CXVIRTUALSCREEN);
+ int height = OS.GetSystemMetrics (OS.SM_CYVIRTUALSCREEN);
+ Point loc = event.getLocationInPixels();
+ inputs.dx = ((loc.x - x) * 65535 + width - 2) / (width - 1);
+ inputs.dy = ((loc.y - y) * 65535 + height - 2) / (height - 1);
+ } else {
+ if (type == SWT.MouseWheel) {
+ inputs.dwFlags = OS.MOUSEEVENTF_WHEEL;
+ switch (event.detail) {
+ case SWT.SCROLL_PAGE:
+ inputs.mouseData = event.count * OS.WHEEL_DELTA;
+ break;
+ case SWT.SCROLL_LINE:
+ int [] value = new int [1];
+ OS.SystemParametersInfo (OS.SPI_GETWHEELSCROLLLINES, 0, value, 0);
+ inputs.mouseData = event.count * OS.WHEEL_DELTA / value [0];
+ break;
+ default: return false;
+ }
+ } else {
+ switch (event.button) {
+ case 1: inputs.dwFlags = type == SWT.MouseDown ? OS.MOUSEEVENTF_LEFTDOWN : OS.MOUSEEVENTF_LEFTUP; break;
+ case 2: inputs.dwFlags = type == SWT.MouseDown ? OS.MOUSEEVENTF_MIDDLEDOWN : OS.MOUSEEVENTF_MIDDLEUP; break;
+ case 3: inputs.dwFlags = type == SWT.MouseDown ? OS.MOUSEEVENTF_RIGHTDOWN : OS.MOUSEEVENTF_RIGHTUP; break;
+ case 4: {
+ inputs.dwFlags = type == SWT.MouseDown ? OS.MOUSEEVENTF_XDOWN : OS.MOUSEEVENTF_XUP;
+ inputs.mouseData = OS.XBUTTON1;
+ break;
+ }
+ case 5: {
+ inputs.dwFlags = type == SWT.MouseDown ? OS.MOUSEEVENTF_XDOWN : OS.MOUSEEVENTF_XUP;
+ inputs.mouseData = OS.XBUTTON2;
+ break;
+ }
+ default: return false;
+ }
+ }
+ }
+ long hHeap = OS.GetProcessHeap ();
+ long pInputs = OS.HeapAlloc (hHeap, OS.HEAP_ZERO_MEMORY, INPUT.sizeof);
+ OS.MoveMemory(pInputs, new int[] {OS.INPUT_MOUSE}, 4);
+ //TODO - DWORD type of INPUT structure aligned to 8 bytes on 64 bit
+ OS.MoveMemory (pInputs + C.PTR_SIZEOF, inputs, MOUSEINPUT.sizeof);
+ boolean result = OS.SendInput (1, pInputs, INPUT.sizeof) != 0;
+ OS.HeapFree (hHeap, 0, pInputs);
+ return result;
+ }
+ }
+ return false;
+ }
+}
+
+void postEvent (Event event) {
+ /*
+ * Place the event at the end of the event queue.
+ * This code is always called in the Display's
+ * thread so it must be re-enterant but does not
+ * need to be synchronized.
+ */
+ if (eventQueue == null) eventQueue = new Event [4];
+ int index = 0;
+ int length = eventQueue.length;
+ while (index < length) {
+ if (eventQueue [index] == null) break;
+ index++;
+ }
+ if (index == length) {
+ Event [] newQueue = new Event [length + 4];
+ System.arraycopy (eventQueue, 0, newQueue, 0, length);
+ eventQueue = newQueue;
+ }
+ eventQueue [index] = event;
+}
+
+/**
+ * Reads an event from the operating system's event queue,
+ * dispatches it appropriately, and returns <code>true</code>
+ * if there is potentially more work to do, or <code>false</code>
+ * if the caller can sleep until another event is placed on
+ * the event queue.
+ * <p>
+ * In addition to checking the system event queue, this method also
+ * checks if any inter-thread messages (created by <code>syncExec()</code>
+ * or <code>asyncExec()</code>) are waiting to be processed, and if
+ * so handles them before returning.
+ * </p>
+ *
+ * @return <code>false</code> if the caller can sleep upon return from this method
+ *
+ * @exception SWTException <ul>
+ * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
+ * <li>ERROR_DEVICE_DISPOSED - if the receiver has been disposed</li>
+ * <li>ERROR_FAILED_EXEC - if an exception occurred while running an inter-thread message</li>
+ * </ul>
+ *
+ * @see #sleep
+ * @see #wake
+ */
+public boolean readAndDispatch () {
+ checkDevice ();
+ lpStartupInfo = null;
+ drawMenuBars ();
+ runSkin ();
+ runDeferredLayouts ();
+ runPopups ();
+ if (OS.PeekMessage (msg, 0, 0, 0, OS.PM_REMOVE)) {
+ if (!filterMessage (msg)) {
+ OS.TranslateMessage (msg);
+ OS.DispatchMessage (msg);
+ }
+ runDeferredEvents ();
+ return true;
+ }
+ return isDisposed () || runAsyncMessages (false);
+}
+
+static void register (Display display) {
+ synchronized (Device.class) {
+ for (int i=0; i<Displays.length; i++) {
+ if (Displays [i] == null) {
+ Displays [i] = display;
+ return;
+ }
+ }
+ Display [] newDisplays = new Display [Displays.length + 4];
+ System.arraycopy (Displays, 0, newDisplays, 0, Displays.length);
+ newDisplays [Displays.length] = display;
+ Displays = newDisplays;
+ }
+}
+
+/**
+ * Releases any internal resources back to the operating
+ * system and clears all fields except the device handle.
+ * <p>
+ * Disposes all shells which are currently open on the display.
+ * After this method has been invoked, all related related shells
+ * will answer <code>true</code> when sent the message
+ * <code>isDisposed()</code>.
+ * </p><p>
+ * When a device is destroyed, resources that were acquired
+ * on behalf of the programmer need to be returned to the
+ * operating system. For example, if the device allocated a
+ * font to be used as the system font, this font would be
+ * freed in <code>release</code>. Also,to assist the garbage
+ * collector and minimize the amount of memory that is not
+ * reclaimed when the programmer keeps a reference to a
+ * disposed device, all fields except the handle are zero'd.
+ * The handle is needed by <code>destroy</code>.
+ * </p>
+ * This method is called before <code>destroy</code>.
+ *
+ * @see Device#dispose
+ * @see #destroy
+ */
+@Override
+protected void release () {
+ sendEvent (SWT.Dispose, new Event ());
+ Shell [] shells = getShells ();
+ for (int i=0; i<shells.length; i++) {
+ Shell shell = shells [i];
+ if (!shell.isDisposed ()) shell.dispose ();
+ }
+ if (tray != null) tray.dispose ();
+ tray = null;
+ if (taskBar != null) taskBar.dispose ();
+ taskBar = null;
+ while (readAndDispatch ()) {}
+ if (disposeList != null) {
+ for (int i=0; i<disposeList.length; i++) {
+ Runnable next = disposeList [i];
+ if (next != null) {
+ try {
+ next.run ();
+ } catch (RuntimeException exception) {
+ runtimeExceptionHandler.accept (exception);
+ } catch (Error error) {
+ errorHandler.accept (error);
+ }
+ }
+ }
+ }
+ disposeList = null;
+ synchronizer.releaseSynchronizer ();
+ synchronizer = null;
+ releaseDisplay ();
+ super.release ();
+}
+
+void releaseDisplay () {
+ if (embeddedHwnd != 0) {
+ OS.PostMessage (embeddedHwnd, SWT_DESTROY, 0, 0);
+ }
+
+ /* Free custom icons */
+ if (hIconSearch != 0) OS.DestroyIcon (hIconSearch);
+ if (hIconCancel != 0) OS.DestroyIcon (hIconCancel);
+
+ /* Release XP Themes */
+ if (hButtonTheme != 0) OS.CloseThemeData (hButtonTheme);
+ if (hEditTheme != 0) OS.CloseThemeData (hEditTheme);
+ if (hExplorerBarTheme != 0) OS.CloseThemeData (hExplorerBarTheme);
+ if (hScrollBarTheme != 0) OS.CloseThemeData (hScrollBarTheme);
+ if (hTabTheme != 0) OS.CloseThemeData (hTabTheme);
+ hButtonTheme = hEditTheme = hExplorerBarTheme = hScrollBarTheme = hTabTheme = 0;
+
+ /* Unhook the message hook */
+ if (msgHook != 0) OS.UnhookWindowsHookEx (msgHook);
+ msgHook = 0;
+
+ /* Unhook the filter hook */
+ if (filterHook != 0) OS.UnhookWindowsHookEx (filterHook);
+ filterHook = 0;
+ msgFilterCallback.dispose ();
+ msgFilterCallback = null;
+ msgFilterProc = 0;
+
+ /* Unhook the idle hook */
+ if (idleHook != 0) OS.UnhookWindowsHookEx (idleHook);
+ idleHook = 0;
+ foregroundIdleCallback.dispose ();
+ foregroundIdleCallback = null;
+ foregroundIdleProc = 0;
+
+ /* Stop the settings timer */
+ OS.KillTimer (hwndMessage, SETTINGS_ID);
+
+ /* Destroy the message only HWND */
+ if (hwndMessage != 0) OS.DestroyWindow (hwndMessage);
+ hwndMessage = 0;
+ messageCallback.dispose ();
+ messageCallback = null;
+ messageProc = 0;
+
+ /* Unregister the SWT window class */
+ long hHeap = OS.GetProcessHeap ();
+ long hInstance = OS.GetModuleHandle (null);
+ OS.UnregisterClass (windowClass, hInstance);
+
+ /* Unregister the SWT drop shadow and CS_OWNDC window class */
+ OS.UnregisterClass (windowShadowClass, hInstance);
+ OS.UnregisterClass (windowOwnDCClass, hInstance);
+ windowClass = windowShadowClass = windowOwnDCClass = null;
+ windowCallback.dispose ();
+ windowCallback = null;
+ windowProc = 0;
+
+ /* Release the System fonts */
+ if (systemFont != null) systemFont.dispose ();
+ systemFont = null;
+ lfSystemFont = null;
+
+ /* Release the System Images */
+ if (errorImage != null) errorImage.dispose ();
+ if (infoImage != null) infoImage.dispose ();
+ if (questionImage != null) questionImage.dispose ();
+ if (warningIcon != null) warningIcon.dispose ();
+ errorImage = infoImage = questionImage = warningIcon = null;
+
+ /* Release the System Cursors */
+ for (int i = 0; i < cursors.length; i++) {
+ if (cursors [i] != null) cursors [i].dispose ();
+ }
+ cursors = null;
+
+ /* Release Acquired Resources */
+ if (resources != null) {
+ for (int i=0; i<resources.length; i++) {
+ if (resources [i] != null) resources [i].dispose ();
+ }
+ resources = null;
+ }
+
+ /* Release Custom Colors for ChooseColor */
+ if (lpCustColors != 0) OS.HeapFree (hHeap, 0, lpCustColors);
+ lpCustColors = 0;
+
+ /* Uninitialize OLE */
+ OS.OleUninitialize ();
+
+ /* Uninitialize buffered painting */
+ OS.BufferedPaintUnInit ();
+
+ /* Release references */
+ thread = null;
+ msg = hookMsg = null;
+ keyboard = null;
+ modalDialog = null;
+ modalShells = null;
+ data = null;
+ keys = null;
+ values = null;
+ bars = popups = null;
+ indexTable = null;
+ timerIds = null;
+ controlTable = null;
+ lastControl = lastGetControl = lastHittestControl = null;
+ imageList = toolImageList = toolHotImageList = toolDisabledImageList = null;
+ timerList = null;
+ tableBuffer = null;
+ eventTable = filterTable = null;
+ items = null;
+ clickRect = null;
+ monitors = null;
+ touchSources = null;
+
+ /* Release handles */
+ threadId = 0;
+}
+
+void releaseImageList (ImageList list) {
+ int i = 0;
+ int length = imageList.length;
+ while (i < length) {
+ if (imageList [i] == list) {
+ if (list.removeRef () > 0) return;
+ list.dispose ();
+ System.arraycopy (imageList, i + 1, imageList, i, --length - i);
+ imageList [length] = null;
+ for (int j=0; j<length; j++) {
+ if (imageList [j] != null) return;
+ }
+ imageList = null;
+ return;
+ }
+ i++;
+ }
+}
+
+void releaseToolImageList (ImageList list) {
+ int i = 0;
+ int length = toolImageList.length;
+ while (i < length) {
+ if (toolImageList [i] == list) {
+ if (list.removeRef () > 0) return;
+ list.dispose ();
+ System.arraycopy (toolImageList, i + 1, toolImageList, i, --length - i);
+ toolImageList [length] = null;
+ for (int j=0; j<length; j++) {
+ if (toolImageList [j] != null) return;
+ }
+ toolImageList = null;
+ return;
+ }
+ i++;
+ }
+}
+
+void releaseToolHotImageList (ImageList list) {
+ int i = 0;
+ int length = toolHotImageList.length;
+ while (i < length) {
+ if (toolHotImageList [i] == list) {
+ if (list.removeRef () > 0) return;
+ list.dispose ();
+ System.arraycopy (toolHotImageList, i + 1, toolHotImageList, i, --length - i);
+ toolHotImageList [length] = null;
+ for (int j=0; j<length; j++) {
+ if (toolHotImageList [j] != null) return;
+ }
+ toolHotImageList = null;
+ return;
+ }
+ i++;
+ }
+}
+
+void releaseToolDisabledImageList (ImageList list) {
+ int i = 0;
+ int length = toolDisabledImageList.length;
+ while (i < length) {
+ if (toolDisabledImageList [i] == list) {
+ if (list.removeRef () > 0) return;
+ list.dispose ();
+ System.arraycopy (toolDisabledImageList, i + 1, toolDisabledImageList, i, --length - i);
+ toolDisabledImageList [length] = null;
+ for (int j=0; j<length; j++) {
+ if (toolDisabledImageList [j] != null) return;
+ }
+ toolDisabledImageList = null;
+ return;
+ }
+ i++;
+ }
+}
+
+/**
+ * Removes the listener from the collection of listeners who will
+ * be notified when an event of the given type occurs anywhere in
+ * a widget. The event type is one of the event constants defined
+ * in class <code>SWT</code>.
+ *
+ * @param eventType the type of event to listen for
+ * @param listener the listener which should no longer be notified when the event occurs
+ *
+ * @exception IllegalArgumentException <ul>
+ * <li>ERROR_NULL_ARGUMENT - if the listener is null</li>
+ * </ul>
+ * @exception SWTException <ul>
+ * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
+ * </ul>
+ *
+ * @see Listener
+ * @see SWT
+ * @see #addFilter
+ * @see #addListener
+ *
+ * @since 3.0
+ */
+public void removeFilter (int eventType, Listener listener) {
+ checkDevice ();
+ if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
+ if (filterTable == null) return;
+ filterTable.unhook (eventType, listener);
+ if (filterTable.size () == 0) filterTable = null;
+}
+
+/**
+ * Removes the listener from the collection of listeners who will
+ * be notified when an event of the given type occurs. The event type
+ * is one of the event constants defined in class <code>SWT</code>.
+ *
+ * @param eventType the type of event to listen for
+ * @param listener the listener which should no longer be notified
+ *
+ * @exception IllegalArgumentException <ul>
+ * <li>ERROR_NULL_ARGUMENT - if the listener is null</li>
+ * </ul>
+ * @exception SWTException <ul>
+ * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
+ * <li>ERROR_DEVICE_DISPOSED - if the receiver has been disposed</li>
+ * </ul>
+ *
+ * @see Listener
+ * @see SWT
+ * @see #addListener
+ *
+ * @since 2.0
+ */
+public void removeListener (int eventType, Listener listener) {
+ checkDevice ();
+ if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
+ if (eventTable == null) return;
+ eventTable.unhook (eventType, listener);
+}
+
+void removeBar (Menu menu) {
+ if (bars == null) return;
+ for (int i=0; i<bars.length; i++) {
+ if (bars [i] == menu) {
+ bars [i] = null;
+ return;
+ }
+ }
+}
+
+Control removeControl (long handle) {
+ if (handle == 0) return null;
+ lastControl = lastGetControl = null;
+ Control control = null;
+ int index = (int)OS.RemoveProp (handle, SWT_OBJECT_INDEX) - 1;
+ if (0 <= index && index < controlTable.length) {
+ control = controlTable [index];
+ controlTable [index] = null;
+ indexTable [index] = freeSlot;
+ freeSlot = index;
+ }
+ return control;
+}
+
+void removeMenuItem (MenuItem item) {
+ if (items == null) return;
+ items [item.id - ID_START] = null;
+}
+
+void removePopup (Menu menu) {
+ if (popups == null) return;
+ for (int i=0; i<popups.length; i++) {
+ if (popups [i] == menu) {
+ popups [i] = null;
+ return;
+ }
+ }
+}
+
+boolean runAsyncMessages (boolean all) {
+ return synchronizer.runAsyncMessages (all);
+}
+
+boolean runDeferredEvents () {
+ boolean run = false;
+ /*
+ * Run deferred events. This code is always
+ * called in the Display's thread so it must
+ * be re-enterant but need not be synchronized.
+ */
+ while (eventQueue != null) {
+
+ /* Take an event off the queue */
+ Event event = eventQueue [0];
+ if (event == null) break;
+ int length = eventQueue.length;
+ System.arraycopy (eventQueue, 1, eventQueue, 0, --length);
+ eventQueue [length] = null;
+
+ /* Run the event */
+ Widget widget = event.widget;
+ if (widget != null && !widget.isDisposed ()) {
+ Widget item = event.item;
+ if (item == null || !item.isDisposed ()) {
+ run = true;
+ widget.sendEvent (event);
+ }
+ }
+
+ /*
+ * At this point, the event queue could
+ * be null due to a recursive invocation
+ * when running the event.
+ */
+ }
+
+ /* Clear the queue */
+ eventQueue = null;
+ return run;
+}
+
+boolean runDeferredLayouts () {
+ if (layoutDeferredCount != 0) {
+ Composite[] temp = layoutDeferred;
+ int count = layoutDeferredCount;
+ layoutDeferred = null;
+ layoutDeferredCount = 0;
+ for (int i = 0; i < count; i++) {
+ Composite comp = temp[i];
+ if (!comp.isDisposed()) comp.setLayoutDeferred (false);
+ }
+ return true;
+ }
+ return false;
+}
+
+boolean runPopups () {
+ if (popups == null) return false;
+ boolean result = false;
+ while (popups != null) {
+ Menu menu = popups [0];
+ if (menu == null) break;
+ int length = popups.length;
+ System.arraycopy (popups, 1, popups, 0, --length);
+ popups [length] = null;
+ runDeferredEvents ();
+ if (!menu.isDisposed ()) menu._setVisible (true);
+ result = true;
+ }
+ popups = null;
+ return result;
+}
+
+void runSettings () {
+ Font oldFont = getSystemFont ();
+ saveResources ();
+ sendEvent (SWT.Settings, null);
+ Font newFont = getSystemFont ();
+ boolean sameFont = oldFont.equals (newFont);
+ Shell [] shells = getShells ();
+ for (int i=0; i<shells.length; i++) {
+ Shell shell = shells [i];
+ if (!shell.isDisposed ()) {
+ if (!sameFont) {
+ shell.updateFont (oldFont, newFont);
+ }
+ /* This code is intentionally commented */
+ //shell.redraw (true);
+ shell.layout (true, true);
+ }
+ }
+}
+
+boolean runSkin () {
+ if (skinCount > 0) {
+ Widget [] oldSkinWidgets = skinList;
+ int count = skinCount;
+ skinList = new Widget[GROW_SIZE];
+ skinCount = 0;
+ if (eventTable != null && eventTable.hooks(SWT.Skin)) {
+ for (int i = 0; i < count; i++) {
+ Widget widget = oldSkinWidgets[i];
+ if (widget != null && !widget.isDisposed()) {
+ widget.state &= ~Widget.SKIN_NEEDED;
+ oldSkinWidgets[i] = null;
+ Event event = new Event ();
+ event.widget = widget;
+ sendEvent (SWT.Skin, event);
+ }
+ }
+ }
+ return true;
+ }
+ return false;
+}
+
+boolean runTimer (long id) {
+ if (timerList != null && timerIds != null) {
+ int index = 0;
+ while (index <timerIds.length) {
+ if (timerIds [index] == id) {
+ OS.KillTimer (hwndMessage, timerIds [index]);
+ timerIds [index] = 0;
+ Runnable runnable = timerList [index];
+ timerList [index] = null;
+ if (runnable != null) {
+ try {
+ runnable.run ();
+ } catch (RuntimeException exception) {
+ runtimeExceptionHandler.accept (exception);
+ } catch (Error exception) {
+ errorHandler.accept (exception);
+ }
+ }
+ return true;
+ }
+ index++;
+ }
+ }
+ return false;
+}
+
+void saveResources () {
+ int resourceCount = 0;
+ if (resources == null) {
+ resources = new Resource [RESOURCE_SIZE];
+ } else {
+ resourceCount = resources.length;
+ Resource [] newResources = new Resource [resourceCount + RESOURCE_SIZE];
+ System.arraycopy (resources, 0, newResources, 0, resourceCount);
+ resources = newResources;
+ }
+ if (systemFont != null) {
+ NONCLIENTMETRICS info = new NONCLIENTMETRICS ();
+ info.cbSize = NONCLIENTMETRICS.sizeof;
+ if (OS.SystemParametersInfo (OS.SPI_GETNONCLIENTMETRICS, 0, info, 0)) {
+ LOGFONT logFont = info.lfMessageFont;
+ if (lfSystemFont == null ||
+ logFont.lfCharSet != lfSystemFont.lfCharSet ||
+ logFont.lfHeight != lfSystemFont.lfHeight ||
+ logFont.lfWidth != lfSystemFont.lfWidth ||
+ logFont.lfEscapement != lfSystemFont.lfEscapement ||
+ logFont.lfOrientation != lfSystemFont.lfOrientation ||
+ logFont.lfWeight != lfSystemFont.lfWeight ||
+ logFont.lfItalic != lfSystemFont.lfItalic ||
+ logFont.lfUnderline != lfSystemFont.lfUnderline ||
+ logFont.lfStrikeOut != lfSystemFont.lfStrikeOut ||
+ logFont.lfCharSet != lfSystemFont.lfCharSet ||
+ logFont.lfOutPrecision != lfSystemFont.lfOutPrecision ||
+ logFont.lfClipPrecision != lfSystemFont.lfClipPrecision ||
+ logFont.lfQuality != lfSystemFont.lfQuality ||
+ logFont.lfPitchAndFamily != lfSystemFont.lfPitchAndFamily ||
+ !getFontName (logFont).equals (getFontName (lfSystemFont))) {
+ resources [resourceCount++] = systemFont;
+ lfSystemFont = logFont;
+ systemFont = null;
+ }
+ }
+ }
+ if (errorImage != null) resources [resourceCount++] = errorImage;
+ if (infoImage != null) resources [resourceCount++] = infoImage;
+ if (questionImage != null) resources [resourceCount++] = questionImage;
+ if (warningIcon != null) resources [resourceCount++] = warningIcon;
+ errorImage = infoImage = questionImage = warningIcon = null;
+ for (int i=0; i<cursors.length; i++) {
+ if (cursors [i] != null) resources [resourceCount++] = cursors [i];
+ cursors [i] = null;
+ }
+ if (resourceCount < RESOURCE_SIZE) {
+ Resource [] newResources = new Resource [resourceCount];
+ System.arraycopy (resources, 0, newResources, 0, resourceCount);
+ resources = newResources;
+ }
+}
+
+void sendEvent (int eventType, Event event) {
+ if (eventTable == null && filterTable == null) {
+ return;
+ }
+ if (event == null) event = new Event ();
+ event.display = this;
+ event.type = eventType;
+ if (event.time == 0) event.time = getLastEventTime ();
+ if (!filterEvent (event)) {
+ if (eventTable != null) sendEvent (eventTable, event);
+ }
+}
+
+void sendEvent (EventTable eventTable, Event event) {
+ int type = event.type;
+ sendPreEvent (type);
+ try {
+ eventTable.sendEvent (event);
+ } finally {
+ sendPostEvent (type);
+ }
+}
+
+void sendPreEvent (int eventType) {
+ if (eventType != SWT.PreEvent && eventType != SWT.PostEvent
+ && eventType != SWT.PreExternalEventDispatch
+ && eventType != SWT.PostExternalEventDispatch) {
+ if (eventTable != null && eventTable.hooks (SWT.PreEvent)) {
+ Event event = new Event ();
+ event.detail = eventType;
+ sendEvent (SWT.PreEvent, event);
+ }
+ }
+}
+
+void sendPostEvent (int eventType) {
+ if (eventType != SWT.PreEvent && eventType != SWT.PostEvent
+ && eventType != SWT.PreExternalEventDispatch
+ && eventType != SWT.PostExternalEventDispatch) {
+ if (eventTable != null && eventTable.hooks (SWT.PostEvent)) {
+ Event event = new Event ();
+ event.detail = eventType;
+ sendEvent (SWT.PostEvent, event);
+ }
+ }
+}
+
+/**
+ * Sends a SWT.PreExternalEventDispatch event.
+ *
+ * @noreference This method is not intended to be referenced by clients.
+ */
+public void sendPreExternalEventDispatchEvent () {
+ if (eventTable != null && eventTable.hooks (SWT.PreExternalEventDispatch)) {
+ sendEvent (SWT.PreExternalEventDispatch, null);
+ }
+}
+
+/**
+ * Sends a SWT.PostExternalEventDispatch event.
+ *
+ * @noreference This method is not intended to be referenced by clients.
+ */
+public void sendPostExternalEventDispatchEvent () {
+ if (eventTable != null && eventTable.hooks (SWT.PostExternalEventDispatch)) {
+ sendEvent (SWT.PostExternalEventDispatch, null);
+ }
+}
+
+/**
+ * Sets the location of the on-screen pointer relative to the top left corner
+ * of the screen. <b>Note: It is typically considered bad practice for a
+ * program to move the on-screen pointer location.</b>
+ *
+ * @param x the new x coordinate for the cursor
+ * @param y the new y coordinate for the cursor
+ *
+ * @exception SWTException <ul>
+ * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
+ * <li>ERROR_DEVICE_DISPOSED - if the receiver has been disposed</li>
+ * </ul>
+ *
+ * @since 2.1
+ */
+public void setCursorLocation (int x, int y) {
+ checkDevice ();
+ setCursorLocationInPixels (DPIUtil.autoScaleUp (x), DPIUtil.autoScaleUp (y));
+}
+
+void setCursorLocationInPixels (int x, int y) {
+ OS.SetCursorPos (x, y);
+}
+
+/**
+ * Sets the location of the on-screen pointer relative to the top left corner
+ * of the screen. <b>Note: It is typically considered bad practice for a
+ * program to move the on-screen pointer location.</b>
+ *
+ * @param point new position
+ *
+ * @exception SWTException <ul>
+ * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
+ * <li>ERROR_NULL_ARGUMENT - if the point is null
+ * <li>ERROR_DEVICE_DISPOSED - if the receiver has been disposed</li>
+ * </ul>
+ *
+ * @since 2.0
+ */
+public void setCursorLocation (Point point) {
+ checkDevice ();
+ if (point == null) error (SWT.ERROR_NULL_ARGUMENT);
+ setCursorLocation (point.x, point.y);
+}
+
+/**
+ * Sets the application defined property of the receiver
+ * with the specified name to the given argument.
+ * <p>
+ * Applications may have associated arbitrary objects with the
+ * receiver in this fashion. If the objects stored in the
+ * properties need to be notified when the display is disposed
+ * of, it is the application's responsibility provide a
+ * <code>disposeExec()</code> handler which does so.
+ * </p>
+ *
+ * @param key the name of the property
+ * @param value the new value for the property
+ *
+ * @exception IllegalArgumentException <ul>
+ * <li>ERROR_NULL_ARGUMENT - if the key is null</li>
+ * </ul>
+ * @exception SWTException <ul>
+ * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
+ * <li>ERROR_DEVICE_DISPOSED - if the receiver has been disposed</li>
+ * </ul>
+ *
+ * @see #getData(String)
+ * @see #disposeExec(Runnable)
+ */
+public void setData (String key, Object value) {
+ checkDevice ();
+ if (key == null) error (SWT.ERROR_NULL_ARGUMENT);
+
+ if (key.equals (RUN_MESSAGES_IN_IDLE_KEY)) {
+ Boolean data = (Boolean) value;
+ runMessagesInIdle = data != null && data.booleanValue ();
+ return;
+ }
+ if (key.equals (RUN_MESSAGES_IN_MESSAGE_PROC_KEY)) {
+ Boolean data = (Boolean) value;
+ runMessagesInMessageProc = data != null && data.booleanValue ();
+ return;
+ }
+ if (key.equals (USE_OWNDC_KEY)) {
+ Boolean data = (Boolean) value;
+ useOwnDC = data != null && data.booleanValue ();
+ return;
+ }
+ if (key.equals (ACCEL_KEY_HIT)) {
+ Boolean data = (Boolean) value;
+ accelKeyHit = data != null && data.booleanValue ();
+ return;
+ }
+ if (key.equals (EXTERNAL_EVENT_LOOP_KEY)) {
+ Boolean data = (Boolean) value;
+ externalEventLoop = data != null && data.booleanValue ();
+ return;
+ }
+ /* Remove the key/value pair */
+ if (value == null) {
+ if (keys == null) return;
+ int index = 0;
+ while (index < keys.length && !keys [index].equals (key)) index++;
+ if (index == keys.length) return;
+ if (keys.length == 1) {
+ keys = null;
+ values = null;
+ } else {
+ String [] newKeys = new String [keys.length - 1];
+ Object [] newValues = new Object [values.length - 1];
+ System.arraycopy (keys, 0, newKeys, 0, index);
+ System.arraycopy (keys, index + 1, newKeys, index, newKeys.length - index);
+ System.arraycopy (values, 0, newValues, 0, index);
+ System.arraycopy (values, index + 1, newValues, index, newValues.length - index);
+ keys = newKeys;
+ values = newValues;
+ }
+ return;
+ }
+
+ /* Add the key/value pair */
+ if (keys == null) {
+ keys = new String [] {key};
+ values = new Object [] {value};
+ return;
+ }
+ for (int i=0; i<keys.length; i++) {
+ if (keys [i].equals (key)) {
+ values [i] = value;
+ return;
+ }
+ }
+ String [] newKeys = new String [keys.length + 1];
+ Object [] newValues = new Object [values.length + 1];
+ System.arraycopy (keys, 0, newKeys, 0, keys.length);
+ System.arraycopy (values, 0, newValues, 0, values.length);
+ newKeys [keys.length] = key;
+ newValues [values.length] = value;
+ keys = newKeys;
+ values = newValues;
+}
+
+/**
+ * Sets the application defined, display specific data
+ * associated with the receiver, to the argument.
+ * The <em>display specific data</em> is a single,
+ * unnamed field that is stored with every display.
+ * <p>
+ * Applications may put arbitrary objects in this field. If
+ * the object stored in the display specific data needs to
+ * be notified when the display is disposed of, it is the
+ * application's responsibility provide a
+ * <code>disposeExec()</code> handler which does so.
+ * </p>
+ *
+ * @param data the new display specific data
+ *
+ * @exception SWTException <ul>
+ * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
+ * <li>ERROR_DEVICE_DISPOSED - if the receiver has been disposed</li>
+ * </ul>
+ *
+ * @see #getData()
+ * @see #disposeExec(Runnable)
+ */
+public void setData (Object data) {
+ checkDevice ();
+ this.data = data;
+}
+
+/**
+ * Returns the application name.
+ *
+ * @return the application name
+ *
+ * @see #setAppName(String)
+ *
+ * @since 3.6
+ */
+public static String getAppName () {
+ return APP_NAME;
+}
+
+/**
+ * Returns the application version.
+ *
+ * @return the application version
+ *
+ * @see #setAppVersion(String)
+ *
+ * @since 3.6
+ */
+public static String getAppVersion () {
+ return APP_VERSION;
+}
+
+/**
+ * Sets the application name to the argument.
+ * <p>
+ * The application name can be used in several ways,
+ * depending on the platform and tools being used.
+ * Accessibility tools could ask for the application
+ * name. On Windows, if the application name is set
+ * to any value other than "SWT" (case insensitive),
+ * it is used to set the application user model ID
+ * which is used by the OS for taskbar grouping.
+ * @see <a href="http://msdn.microsoft.com/en-us/library/windows/desktop/dd378459%28v=vs.85%29.aspx#HOW">AppUserModelID (Windows)</a>
+ * </p><p>
+ * Specifying <code>null</code> for the name clears it.
+ * </p>
+ *
+ * @param name the new app name or <code>null</code>
+ */
+public static void setAppName (String name) {
+ APP_NAME = name;
+}
+
+/**
+ * Sets the application version to the argument.
+ *
+ * @param version the new app version
+ *
+ * @since 3.6
+ */
+public static void setAppVersion (String version) {
+ APP_VERSION = version;
+}
+
+void setModalDialog (Dialog modalDailog) {
+ this.modalDialog = modalDailog;
+ Shell [] shells = getShells ();
+ for (int i=0; i<shells.length; i++) shells [i].updateModal ();
+}
+
+void setModalShell (Shell shell) {
+ if (modalShells == null) modalShells = new Shell [4];
+ int index = 0, length = modalShells.length;
+ while (index < length) {
+ if (modalShells [index] == shell) return;
+ if (modalShells [index] == null) break;
+ index++;
+ }
+ if (index == length) {
+ Shell [] newModalShells = new Shell [length + 4];
+ System.arraycopy (modalShells, 0, newModalShells, 0, length);
+ modalShells = newModalShells;
+ }
+ modalShells [index] = shell;
+ Shell [] shells = getShells ();
+ for (int i=0; i<shells.length; i++) shells [i].updateModal ();
+}
+
+/**
+ * Sets the synchronizer used by the display to be
+ * the argument, which can not be null.
+ *
+ * @param synchronizer the new synchronizer for the display (must not be null)
+ *
+ * @exception IllegalArgumentException <ul>
+ * <li>ERROR_NULL_ARGUMENT - if the synchronizer is null</li>
+ * </ul>
+ * @exception SWTException <ul>
+ * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
+ * <li>ERROR_DEVICE_DISPOSED - if the receiver has been disposed</li>
+ * <li>ERROR_FAILED_EXEC - if an exception occurred while running an inter-thread message</li>
+ * </ul>
+ */
+public void setSynchronizer (Synchronizer synchronizer) {
+ checkDevice ();
+ if (synchronizer == null) error (SWT.ERROR_NULL_ARGUMENT);
+ if (synchronizer == this.synchronizer) return;
+ Synchronizer oldSynchronizer;
+ synchronized (Device.class) {
+ oldSynchronizer = this.synchronizer;
+ this.synchronizer = synchronizer;
+ }
+ if (oldSynchronizer != null) {
+ oldSynchronizer.moveAllEventsTo(synchronizer);
+ }
+}
+
+/**
+ * Sets a callback that will be invoked whenever an exception is thrown by a listener or external
+ * callback function. The application may use this to set a global exception handling policy:
+ * the most common policies are either to log and discard the exception or to re-throw the
+ * exception.
+ * <p>
+ * The default SWT error handling policy is to rethrow exceptions.
+ *
+ * @param runtimeExceptionHandler new exception handler to be registered.
+ * @since 3.106
+ */
+public final void setRuntimeExceptionHandler (Consumer<RuntimeException> runtimeExceptionHandler) {
+ checkDevice();
+ this.runtimeExceptionHandler = Objects.requireNonNull (runtimeExceptionHandler);
+}
+
+/**
+ * Returns the current exception handler. It will receive all exceptions thrown by listeners
+ * and external callbacks in this display. If code wishes to temporarily replace the exception
+ * handler (for example, during a unit test), it is common practice to invoke this method prior
+ * to replacing the exception handler so that the old handler may be restored afterward.
+ *
+ * @return the current exception handler. Never <code>null</code>.
+ * @since 3.106
+ */
+public final Consumer<RuntimeException> getRuntimeExceptionHandler () {
+ return runtimeExceptionHandler;
+}
+
+/**
+ * Sets a callback that will be invoked whenever an error is thrown by a listener or external
+ * callback function. The application may use this to set a global exception handling policy:
+ * the most common policies are either to log and discard the exception or to re-throw the
+ * exception.
+ * <p>
+ * The default SWT error handling policy is to rethrow exceptions.
+ *
+ * @param errorHandler new error handler to be registered.
+ * @since 3.106
+ */
+public final void setErrorHandler (Consumer<Error> errorHandler) {
+ checkDevice();
+ this.errorHandler = Objects.requireNonNull (errorHandler);
+}
+
+/**
+ * Returns the current exception handler. It will receive all errors thrown by listeners
+ * and external callbacks in this display. If code wishes to temporarily replace the error
+ * handler (for example, during a unit test), it is common practice to invoke this method prior
+ * to replacing the error handler so that the old handler may be restored afterward.
+ *
+ * @return the current error handler. Never <code>null</code>.
+ * @since 3.106
+ */
+public final Consumer<Error> getErrorHandler () {
+ return errorHandler;
+}
+
+int shiftedKey (int key) {
+ /* Clear the virtual keyboard and press the shift key */
+ for (int i=0; i<keyboard.length; i++) keyboard [i] = 0;
+ keyboard [OS.VK_SHIFT] |= 0x80;
+
+ /* Translate the key to ASCII or UNICODE using the virtual keyboard */
+ char [] result = new char [1];
+ if (OS.ToUnicode (key, key, keyboard, result, 1, 0) == 1) return result [0];
+ return 0;
+}
+
+/**
+ * Causes the user-interface thread to <em>sleep</em> (that is,
+ * to be put in a state where it does not consume CPU cycles)
+ * until an event is received or it is otherwise awakened.
+ *
+ * @return <code>true</code> if an event requiring dispatching was placed on the queue.
+ *
+ * @exception SWTException <ul>
+ * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
+ * <li>ERROR_DEVICE_DISPOSED - if the receiver has been disposed</li>
+ * </ul>
+ *
+ * @see #wake
+ */
+public boolean sleep () {
+ checkDevice ();
+ if (getMessageCount () != 0) return true;
+ sendPreExternalEventDispatchEvent ();
+ boolean result = OS.WaitMessage ();
+ sendPostExternalEventDispatchEvent ();
+ return result;
+}
+
+/**
+ * Causes the <code>run()</code> method of the runnable to
+ * be invoked by the user-interface thread at the next
+ * reasonable opportunity. The thread which calls this method
+ * is suspended until the runnable completes. Specifying <code>null</code>
+ * as the runnable simply wakes the user-interface thread.
+ * <p>
+ * Note that at the time the runnable is invoked, widgets
+ * that have the receiver as their display may have been
+ * disposed. Therefore, it is necessary to check for this
+ * case inside the runnable before accessing the widget.
+ * </p>
+ *
+ * @param runnable code to run on the user-interface thread or <code>null</code>
+ *
+ * @exception SWTException <ul>
+ * <li>ERROR_FAILED_EXEC - if an exception occurred when executing the runnable</li>
+ * <li>ERROR_DEVICE_DISPOSED - if the receiver has been disposed</li>
+ * </ul>
+ *
+ * @see #asyncExec
+ */
+public void syncExec (Runnable runnable) {
+ Synchronizer synchronizer;
+ synchronized (Device.class) {
+ if (isDisposed ()) error (SWT.ERROR_DEVICE_DISPOSED);
+ synchronizer = this.synchronizer;
+ }
+ synchronizer.syncExec (runnable);
+}
+
+/**
+ * Causes the <code>run()</code> method of the runnable to
+ * be invoked by the user-interface thread after the specified
+ * number of milliseconds have elapsed. If milliseconds is less
+ * than zero, the runnable is not executed.
+ * <p>
+ * Note that at the time the runnable is invoked, widgets
+ * that have the receiver as their display may have been
+ * disposed. Therefore, it is necessary to check for this
+ * case inside the runnable before accessing the widget.
+ * </p>
+ *
+ * @param milliseconds the delay before running the runnable
+ * @param runnable code to run on the user-interface thread
+ *
+ * @exception IllegalArgumentException <ul>
+ * <li>ERROR_NULL_ARGUMENT - if the runnable is null</li>
+ * </ul>
+ * @exception SWTException <ul>
+ * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
+ * <li>ERROR_DEVICE_DISPOSED - if the receiver has been disposed</li>
+ * </ul>
+ *
+ * @see #asyncExec
+ */
+public void timerExec (int milliseconds, Runnable runnable) {
+ checkDevice ();
+ if (runnable == null) error (SWT.ERROR_NULL_ARGUMENT);
+ if (timerList == null) timerList = new Runnable [4];
+ if (timerIds == null) timerIds = new long [4];
+ int index = 0;
+ while (index < timerList.length) {
+ if (timerList [index] == runnable) break;
+ index++;
+ }
+ long timerId = 0;
+ if (index != timerList.length) {
+ timerId = timerIds [index];
+ if (milliseconds < 0) {
+ OS.KillTimer (hwndMessage, timerId);
+ timerList [index] = null;
+ timerIds [index] = 0;
+ return;
+ }
+ } else {
+ if (milliseconds < 0) return;
+ index = 0;
+ while (index < timerList.length) {
+ if (timerList [index] == null) break;
+ index++;
+ }
+ timerId = nextTimerId++;
+ if (index == timerList.length) {
+ Runnable [] newTimerList = new Runnable [timerList.length + 4];
+ System.arraycopy (timerList, 0, newTimerList, 0, timerList.length);
+ timerList = newTimerList;
+ long [] newTimerIds = new long [timerIds.length + 4];
+ System.arraycopy (timerIds, 0, newTimerIds, 0, timerIds.length);
+ timerIds = newTimerIds;
+ }
+ }
+ long newTimerID = OS.SetTimer (hwndMessage, timerId, milliseconds, 0);
+ if (newTimerID != 0) {
+ timerList [index] = runnable;
+ timerIds [index] = newTimerID;
+ }
+}
+
+boolean translateAccelerator (MSG msg, Control control) {
+ accelKeyHit = true;
+ boolean result = control.translateAccelerator (msg);
+ accelKeyHit = false;
+ return result;
+}
+
+static int translateKey (int key) {
+ for (int i=0; i<KeyTable.length; i++) {
+ if (KeyTable [i] [0] == key) return KeyTable [i] [1];
+ }
+ return 0;
+}
+
+boolean translateMnemonic (MSG msg, Control control) {
+ switch (msg.message) {
+ case OS.WM_CHAR:
+ case OS.WM_SYSCHAR:
+ return control.translateMnemonic (msg);
+ }
+ return false;
+}
+
+boolean translateTraversal (MSG msg, Control control) {
+ switch (msg.message) {
+ case OS.WM_KEYDOWN:
+ switch ((int)msg.wParam) {
+ case OS.VK_RETURN:
+ case OS.VK_ESCAPE:
+ case OS.VK_TAB:
+ case OS.VK_UP:
+ case OS.VK_DOWN:
+ case OS.VK_LEFT:
+ case OS.VK_RIGHT:
+ case OS.VK_PRIOR:
+ case OS.VK_NEXT:
+ return control.translateTraversal (msg);
+ }
+ break;
+ case OS.WM_SYSKEYDOWN:
+ switch ((int)msg.wParam) {
+ case OS.VK_MENU:
+ return control.translateTraversal (msg);
+ }
+ break;
+ }
+ return false;
+}
+
+static int untranslateKey (int key) {
+ for (int i=0; i<KeyTable.length; i++) {
+ if (KeyTable [i] [1] == key) return KeyTable [i] [0];
+ }
+ return 0;
+}
+
+/**
+ * Forces all outstanding paint requests for the display
+ * to be processed before this method returns.
+ *
+ * @exception SWTException <ul>
+ * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
+ * <li>ERROR_DEVICE_DISPOSED - if the receiver has been disposed</li>
+ * </ul>
+ *
+ * @see Control#update()
+ */
+public void update() {
+ checkDevice ();
+ /*
+ * Feature in Windows. When an application does not remove
+ * events from the event queue for some time, Windows assumes
+ * the application is not responding and no longer sends paint
+ * events to the application. The fix is to detect that the
+ * application is not responding and call PeekMessage() with
+ * PM_REMOVE to tell Windows that the application is ready
+ * to dispatch events. Note that the message does not have
+ * to be found or dispatched in order to wake Windows up.
+ *
+ * NOTE: This allows other cross thread messages to be delivered,
+ * most notably WM_ACTIVATE.
+ */
+ if (OS.IsHungAppWindow (hwndMessage)) {
+ MSG msg = new MSG ();
+ int flags = OS.PM_REMOVE | OS.PM_NOYIELD;
+ OS.PeekMessage (msg, hwndMessage, SWT_NULL, SWT_NULL, flags);
+ }
+ Shell[] shells = getShells ();
+ for (int i=0; i<shells.length; i++) {
+ Shell shell = shells [i];
+ if (!shell.isDisposed ()) shell.update (true);
+ }
+}
+
+/**
+ * If the receiver's user-interface thread was <code>sleep</code>ing,
+ * causes it to be awakened and start running again. Note that this
+ * method may be called from any thread.
+ *
+ * @exception SWTException <ul>
+ * <li>ERROR_DEVICE_DISPOSED - if the receiver has been disposed</li>
+ * </ul>
+ *
+ * @see #sleep
+ */
+public void wake () {
+ synchronized (Device.class) {
+ if (isDisposed ()) error (SWT.ERROR_DEVICE_DISPOSED);
+ if (thread == Thread.currentThread ()) return;
+ wakeThread ();
+ }
+}
+
+void wakeThread () {
+ OS.PostThreadMessage (threadId, OS.WM_NULL, 0, 0);
+}
+
+long windowProc (long hwnd, long msg, long wParam, long lParam) {
+ if (lastControl != null && lastHwnd == hwnd) {
+ return lastControl.windowProc (hwnd, (int)msg, wParam, lParam);
+ }
+ int index = (int)OS.GetProp (hwnd, SWT_OBJECT_INDEX) - 1;
+ if (0 <= index && index < controlTable.length) {
+ Control control = controlTable [index];
+ if (control != null) {
+ lastHwnd = hwnd;
+ lastControl = control;
+ return control.windowProc (hwnd, (int)msg, wParam, lParam);
+ }
+ }
+ return OS.DefWindowProc (hwnd, (int)msg, wParam, lParam);
+}
+
+int textWidth (String text, long handle) {
+ long oldFont = 0;
+ RECT rect = new RECT ();
+ long hDC = OS.GetDC (handle);
+ long newFont = OS.SendMessage (handle, OS.WM_GETFONT, 0, 0);
+ if (newFont != 0) oldFont = OS.SelectObject (hDC, newFont);
+ int flags = OS.DT_CALCRECT | OS.DT_SINGLELINE | OS.DT_NOPREFIX;
+ char [] buffer = text.toCharArray ();
+ OS.DrawText (hDC, buffer, buffer.length, rect, flags);
+ if (newFont != 0) OS.SelectObject (hDC, oldFont);
+ OS.ReleaseDC (handle, hDC);
+ return (rect.right - rect.left);
+}
+
+String wrapText (String text, long handle, int width) {
+ String Lf = "\r\n"; //$NON-NLS-1$
+ text = withCrLf (text);
+ int length = text.length ();
+ if (width <= 0 || length == 0 || length == 1) return text;
+ StringBuilder result = new StringBuilder ();
+ int lineStart = 0, lineEnd = 0;
+ while (lineStart < length) {
+ lineEnd = text.indexOf (Lf, lineStart);
+ boolean noLf = lineEnd == -1;
+ if (noLf) lineEnd = length;
+ int nextStart = lineEnd + Lf.length ();
+ while (lineEnd > lineStart + 1 && Character.isWhitespace (text.charAt (lineEnd - 1))) {
+ lineEnd--;
+ }
+ int wordStart = lineStart, wordEnd = lineStart;
+ int i = lineStart;
+ while (i < lineEnd) {
+ int lastStart = wordStart, lastEnd = wordEnd;
+ wordStart = i;
+ while (i < lineEnd && !Character.isWhitespace (text.charAt (i))) {
+ i++;
+ }
+ wordEnd = i - 1;
+ String line = text.substring (lineStart, wordEnd + 1);
+ int lineWidth = textWidth (line, handle);
+ while (i < lineEnd && Character.isWhitespace (text.charAt (i))) {
+ i++;
+ }
+ if (lineWidth > width) {
+ if (lastStart == wordStart) {
+ while (wordStart < wordEnd) {
+ line = text.substring (lineStart, wordStart + 1);
+ lineWidth = textWidth (line, handle);
+ if (lineWidth >= width) break;
+ wordStart++;
+ }
+ if (wordStart == lastStart) wordStart++;
+ lastEnd = wordStart - 1;
+ }
+ line = text.substring (lineStart, lastEnd + 1);
+ result.append (line); result.append (Lf);
+ i = wordStart; lineStart = wordStart; wordEnd = wordStart;
+ }
+ }
+ if (lineStart < lineEnd) {
+ result.append (text.substring (lineStart, lineEnd));
+ }
+ if (!noLf) {
+ result.append (Lf);
+ }
+ lineStart = nextStart;
+ }
+ return result.toString ();
+}
+
+static String withCrLf (String string) {
+
+ /* If the string is empty, return the string. */
+ int length = string.length ();
+ if (length == 0) return string;
+
+ /*
+ * Check for an LF or CR/LF and assume the rest of
+ * the string is formated that way. This will not
+ * work if the string contains mixed delimiters.
+ */
+ int i = string.indexOf ('\n', 0);
+ if (i == -1) return string;
+ if (i > 0 && string.charAt (i - 1) == '\r') {
+ return string;
+ }
+
+ /*
+ * The string is formatted with LF. Compute the
+ * number of lines and the size of the buffer
+ * needed to hold the result
+ */
+ i++;
+ int count = 1;
+ while (i < length) {
+ if ((i = string.indexOf ('\n', i)) == -1) break;
+ count++; i++;
+ }
+ count += length;
+
+ /* Create a new string with the CR/LF line terminator. */
+ i = 0;
+ StringBuilder result = new StringBuilder (count);
+ while (i < length) {
+ int j = string.indexOf ('\n', i);
+ if (j == -1) j = length;
+ result.append (string.substring (i, j));
+ if ((i = j) < length) {
+ result.append ("\r\n"); //$NON-NLS-1$
+ i++;
+ }
+ }
+ return result.toString ();
+}
+
+static char [] withCrLf (char [] string) {
+ /* If the string is empty, return the string. */
+ int length = string.length;
+ if (length == 0) return string;
+
+ /*
+ * Check for an LF or CR/LF and assume the rest of
+ * the string is formated that way. This will not
+ * work if the string contains mixed delimiters.
+ * Also, compute the number of lines.
+ */
+ int count = 0;
+ for (int i = 0; i < string.length; i++) {
+ if (string [i] == '\n') {
+ count++;
+ if (count == 1 && i > 0 && string [i - 1] == '\r') return string;
+ }
+ }
+ if (count == 0) return string;
+
+ /*
+ * The string is formatted with LF.
+ */
+ count += length;
+
+ /* Create a new string with the CR/LF line terminator. */
+ char [] result = new char [count];
+ for (int i = 0, j = 0; i < length && j < count; i++) {
+ if (string [i] == '\n') {
+ result [j++] = '\r';
+ }
+ result [j++] = string [i];
+ }
+
+ return result;
+}
+
+}
Code Review / simantics / platform.git / blobdiff