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diff --git a/bundles/org.eclipse.swt.win32.win32.x86_64/src/org/eclipse/swt/layout/RowLayout.java b/bundles/org.eclipse.swt.win32.win32.x86_64/src/org/eclipse/swt/layout/RowLayout.java
new file mode 100644
index 000000000..cb21fcd13
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+++ b/bundles/org.eclipse.swt.win32.win32.x86_64/src/org/eclipse/swt/layout/RowLayout.java
@@ -0,0 +1,522 @@
+/*******************************************************************************
+ * Copyright (c) 2000, 2018 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.layout;
+
+import org.eclipse.swt.*;
+import org.eclipse.swt.graphics.*;
+import org.eclipse.swt.widgets.*;
+
+/**
+ * Instances of this class determine the size and position of the
+ * children of a <code>Composite</code> by placing them either in
+ * horizontal rows or vertical columns within the parent <code>Composite</code>.
+ * <p>
+ * <code>RowLayout</code> aligns all controls in one row if the
+ * <code>type</code> is set to horizontal, and one column if it is
+ * set to vertical. It has the ability to wrap, and provides configurable
+ * margins and spacing. <code>RowLayout</code> has a number of configuration
+ * fields. In addition, the height and width of each control in a
+ * <code>RowLayout</code> can be specified by setting a <code>RowData</code>
+ * object into the control using <code>setLayoutData ()</code>.
+ * </p>
+ * <p>
+ * The following example code creates a <code>RowLayout</code>, sets all
+ * of its fields to non-default values, and then sets it into a
+ * <code>Shell</code>.</p>
+ * <pre>
+ * 		RowLayout rowLayout = new RowLayout();
+ * 		rowLayout.wrap = false;
+ * 		rowLayout.pack = false;
+ * 		rowLayout.justify = true;
+ * 		rowLayout.type = SWT.VERTICAL;
+ * 		rowLayout.marginLeft = 5;
+ * 		rowLayout.marginTop = 5;
+ * 		rowLayout.marginRight = 5;
+ * 		rowLayout.marginBottom = 5;
+ * 		rowLayout.spacing = 0;
+ * 		shell.setLayout(rowLayout);
+ * </pre>
+ * If you are using the default field values, you only need one line of code:
+ * <pre>
+ * 		shell.setLayout(new RowLayout());
+ * </pre>
+ *
+ * @see RowData
+ * @see <a href="http://www.eclipse.org/swt/snippets/#rowlayout">RowLayout snippets</a>
+ * @see <a href="http://www.eclipse.org/swt/examples.php">SWT Example: LayoutExample</a>
+ * @see <a href="http://www.eclipse.org/swt/">Sample code and further information</a>
+ */
+public final class RowLayout extends Layout {
+
+	/**
+	 * type specifies whether the layout places controls in rows or
+	 * columns.
+	 *
+	 * The default value is HORIZONTAL.
+	 *
+	 * Possible values are: <ul>
+	 *    <li>HORIZONTAL: Position the controls horizontally from left to right</li>
+	 *    <li>VERTICAL: Position the controls vertically from top to bottom</li>
+	 * </ul>
+	 *
+	 * @since 2.0
+	 */
+	public int type = SWT.HORIZONTAL;
+
+	/**
+	 * marginWidth specifies the number of points of horizontal margin
+	 * that will be placed along the left and right edges of the layout.
+	 *
+	 * The default value is 0.
+	 *
+	 * @since 3.0
+	 */
+	public int marginWidth = 0;
+
+	/**
+	 * marginHeight specifies the number of points of vertical margin
+	 * that will be placed along the top and bottom edges of the layout.
+	 *
+	 * The default value is 0.
+	 *
+	 * @since 3.0
+	 */
+	public int marginHeight = 0;
+
+	/**
+	 * spacing specifies the number of points between the edge of one cell
+	 * and the edge of its neighbouring cell.
+	 *
+	 * The default value is 3.
+	 */
+	public int spacing = 3;
+
+	/**
+	 * wrap specifies whether a control will be wrapped to the next
+	 * row if there is insufficient space on the current row.
+	 *
+	 * The default value is true.
+	 */
+	public boolean wrap = true;
+
+	/**
+	 * pack specifies whether all controls in the layout take
+	 * their preferred size.  If pack is false, all controls will
+	 * have the same size which is the size required to accommodate the
+	 * largest preferred height and the largest preferred width of all
+	 * the controls in the layout.
+	 *
+	 * The default value is true.
+	 */
+	public boolean pack = true;
+
+	/**
+	 * fill specifies whether the controls in a row should be
+	 * all the same height for horizontal layouts, or the same
+	 * width for vertical layouts.
+	 *
+	 * The default value is false.
+	 *
+	 * @since 3.0
+	 */
+	public boolean fill = false;
+
+	/**
+	 * center specifies whether the controls in a row should be
+	 * centered vertically in each cell for horizontal layouts,
+	 * or centered horizontally in each cell for vertical layouts.
+	 *
+	 * The default value is false.
+	 *
+	 * @since 3.4
+	 */
+	public boolean center = false;
+
+	/**
+	 * justify specifies whether the controls in a row should be
+	 * fully justified, with any extra space placed between the controls.
+	 *
+	 * The default value is false.
+	 */
+	public boolean justify = false;
+
+	/**
+	 * marginLeft specifies the number of points of horizontal margin
+	 * that will be placed along the left edge of the layout.
+	 *
+	 * The default value is 3.
+	 */
+	public int marginLeft = 3;
+
+	/**
+	 * marginTop specifies the number of points of vertical margin
+	 * that will be placed along the top edge of the layout.
+	 *
+	 * The default value is 3.
+	 */
+	public int marginTop = 3;
+
+	/**
+	 * marginRight specifies the number of points of horizontal margin
+	 * that will be placed along the right edge of the layout.
+	 *
+	 * The default value is 3.
+	 */
+	public int marginRight = 3;
+
+	/**
+	 * marginBottom specifies the number of points of vertical margin
+	 * that will be placed along the bottom edge of the layout.
+	 *
+	 * The default value is 3.
+	 */
+	public int marginBottom = 3;
+
+/**
+ * Constructs a new instance of this class with type HORIZONTAL.
+ */
+public RowLayout () {
+}
+
+/**
+ * Constructs a new instance of this class given the type.
+ *
+ * @param type the type of row layout
+ *
+ * @since 2.0
+ */
+public RowLayout (int type) {
+	this.type = type;
+}
+
+@Override
+protected Point computeSize (Composite composite, int wHint, int hHint, boolean flushCache) {
+	Point extent;
+	if (type == SWT.HORIZONTAL) {
+		extent = layoutHorizontal (composite, false, (wHint != SWT.DEFAULT) && wrap, wHint, flushCache);
+	} else {
+		extent = layoutVertical (composite, false, (hHint != SWT.DEFAULT) && wrap, hHint, flushCache);
+	}
+	if (wHint != SWT.DEFAULT) extent.x = wHint;
+	if (hHint != SWT.DEFAULT) extent.y = hHint;
+	return extent;
+}
+
+Point computeSize (Control control, boolean flushCache) {
+	int wHint = SWT.DEFAULT, hHint = SWT.DEFAULT;
+	RowData data = (RowData) control.getLayoutData ();
+	if (data != null) {
+		wHint = data.width;
+		hHint = data.height;
+	}
+	return control.computeSize (wHint, hHint, flushCache);
+}
+
+@Override
+protected boolean flushCache (Control control) {
+	return true;
+}
+
+String getName () {
+	String string = getClass ().getName ();
+	int index = string.lastIndexOf ('.');
+	if (index == -1) return string;
+	return string.substring (index + 1, string.length ());
+}
+
+@Override
+protected void layout (Composite composite, boolean flushCache) {
+	Rectangle clientArea = composite.getClientArea ();
+	if (type == SWT.HORIZONTAL) {
+		layoutHorizontal (composite, true, wrap, clientArea.width, flushCache);
+	} else {
+		layoutVertical (composite, true, wrap, clientArea.height, flushCache);
+	}
+}
+
+Point layoutHorizontal (Composite composite, boolean move, boolean wrap, int width, boolean flushCache) {
+	Control [] children = composite.getChildren ();
+	int count = 0;
+	for (int i=0; i<children.length; i++) {
+		Control control = children [i];
+		RowData data = (RowData) control.getLayoutData ();
+		if (data == null || !data.exclude) {
+			children [count++] = children [i];
+		}
+	}
+	if (count == 0) {
+		return new Point (marginLeft + marginWidth * 2 + marginRight, marginTop + marginHeight * 2 + marginBottom);
+	}
+	int childWidth = 0, childHeight = 0, maxHeight = 0;
+	if (!pack) {
+		for (int i=0; i<count; i++) {
+			Control child = children [i];
+			Point size = computeSize (child, flushCache);
+			if (width > SWT.DEFAULT && width < size.x && wrap) {
+				size = child.computeSize (width, child.getLayoutData() == null ? SWT.DEFAULT : ((RowData) child.getLayoutData()).height, flushCache);
+			}
+			childWidth = Math.max (childWidth, size.x);
+			childHeight = Math.max (childHeight, size.y);
+		}
+		maxHeight = childHeight;
+	}
+	int clientX = 0, clientY = 0;
+	if (move) {
+		Rectangle rect = composite.getClientArea ();
+		clientX = rect.x;
+		clientY = rect.y;
+	}
+	int [] wraps = null;
+	boolean wrapped = false;
+	Rectangle [] bounds = null;
+	if (move && (justify || fill || center)) {
+		bounds = new Rectangle [count];
+		wraps = new int [count];
+	}
+	int maxX = 0, x = marginLeft + marginWidth, y = marginTop + marginHeight;
+	for (int i=0; i<count; i++) {
+		Control child = children [i];
+		if (pack) {
+			Point size = computeSize (child, flushCache);
+			if (width > SWT.DEFAULT && width < size.x && wrap) {
+				size = child.computeSize (width, child.getLayoutData() == null ? SWT.DEFAULT : ((RowData) child.getLayoutData()).height, flushCache);
+			}
+			childWidth = size.x;
+			childHeight = size.y;
+		}
+		if (wrap && (i != 0) && (x + childWidth > width)) {
+			wrapped = true;
+			if (move && (justify || fill || center)) wraps [i - 1] = maxHeight;
+			x = marginLeft + marginWidth;
+			y += spacing + maxHeight;
+			if (pack) maxHeight = 0;
+		}
+		if (pack || fill || center) {
+			maxHeight = Math.max (maxHeight, childHeight);
+		}
+		if (move) {
+			int childX = x + clientX, childY = y + clientY;
+			if (justify || fill || center) {
+				bounds [i] = new Rectangle (childX, childY, childWidth, childHeight);
+			} else {
+				child.setBounds (childX, childY, childWidth, childHeight);
+			}
+		}
+		x += spacing + childWidth;
+		maxX = Math.max (maxX, x);
+	}
+	maxX = Math.max (clientX + marginLeft + marginWidth, maxX - spacing);
+	if (!wrapped) maxX += marginRight + marginWidth;
+	if (move && (justify || fill || center)) {
+		int space = 0, margin = 0;
+		if (!wrapped) {
+			space = Math.max (0, (width - maxX) / (count + 1));
+			margin = Math.max (0, ((width - maxX) % (count + 1)) / 2);
+		} else {
+			if (fill || justify || center) {
+				int last = 0;
+				if (count > 0) wraps [count - 1] = maxHeight;
+				for (int i=0; i<count; i++) {
+					if (wraps [i] != 0) {
+						int wrapCount = i - last + 1;
+						if (justify) {
+							int wrapX = 0;
+							for (int j=last; j<=i; j++) {
+								wrapX += bounds [j].width + spacing;
+							}
+							space = Math.max (0, (width - wrapX) / (wrapCount + 1));
+							margin = Math.max (0, ((width - wrapX) % (wrapCount + 1)) / 2);
+						}
+						for (int j=last; j<=i; j++) {
+							if (justify) bounds [j].x += (space * (j - last + 1)) + margin;
+							if (fill) {
+								bounds [j].height = wraps [i];
+							} else {
+								if (center) {
+									bounds [j].y += Math.max (0, (wraps [i] - bounds [j].height) / 2);
+								}
+							}
+						}
+						last = i + 1;
+					}
+				}
+			}
+		}
+		for (int i=0; i<count; i++) {
+			if (!wrapped) {
+				if (justify) bounds [i].x += (space * (i + 1)) + margin;
+				if (fill) {
+					bounds [i].height = maxHeight;
+				} else {
+					if (center) {
+						bounds [i].y += Math.max (0, (maxHeight - bounds [i].height) / 2);
+					}
+				}
+			}
+			children [i].setBounds (bounds [i]);
+		}
+	}
+	return new Point (maxX, y + maxHeight + marginBottom + marginHeight);
+}
+
+Point layoutVertical (Composite composite, boolean move, boolean wrap, int height, boolean flushCache) {
+	Control [] children = composite.getChildren ();
+	int count = 0;
+	for (int i=0; i<children.length; i++) {
+		Control control = children [i];
+		RowData data = (RowData) control.getLayoutData ();
+		if (data == null || !data.exclude) {
+			children [count++] = children [i];
+		}
+	}
+	if (count == 0) {
+		return new Point (marginLeft + marginWidth * 2 + marginRight, marginTop + marginHeight * 2 + marginBottom);
+	}
+	int childWidth = 0, childHeight = 0, maxWidth = 0;
+	if (!pack) {
+		for (int i=0; i<count; i++) {
+			Control child = children [i];
+			Point size = computeSize (child, flushCache);
+			if(height>SWT.DEFAULT && height<size.y && wrap)
+				size=child.computeSize(child.getLayoutData()==null?SWT.DEFAULT:((RowData)child.getLayoutData()).width,height,flushCache);
+			childWidth = Math.max (childWidth, size.x);
+			childHeight = Math.max (childHeight, size.y);
+		}
+		maxWidth = childWidth;
+	}
+	int clientX = 0, clientY = 0;
+	if (move) {
+		Rectangle rect = composite.getClientArea ();
+		clientX = rect.x;
+		clientY = rect.y;
+	}
+	int [] wraps = null;
+	boolean wrapped = false;
+	Rectangle [] bounds = null;
+	if (move && (justify || fill || center)) {
+		bounds = new Rectangle [count];
+		wraps = new int [count];
+	}
+	int maxY = 0, x = marginLeft + marginWidth, y = marginTop + marginHeight;
+	for (int i=0; i<count; i++) {
+		Control child = children [i];
+		if (pack) {
+			Point size = computeSize (child, flushCache);
+			if(height>SWT.DEFAULT && height<size.y && wrap)
+				size=child.computeSize(child.getLayoutData()==null?SWT.DEFAULT:((RowData)child.getLayoutData()).width,height,flushCache);
+			childWidth = size.x;
+			childHeight = size.y;
+		}
+		if (wrap && (i != 0) && (y + childHeight > height)) {
+			wrapped = true;
+			if (move && (justify || fill || center)) wraps [i - 1] = maxWidth;
+			x += spacing + maxWidth;
+			y = marginTop + marginHeight;
+			if (pack) maxWidth = 0;
+		}
+		if (pack || fill || center) {
+			maxWidth = Math.max (maxWidth, childWidth);
+		}
+		if (move) {
+			int childX = x + clientX, childY = y + clientY;
+			if (justify || fill || center) {
+				bounds [i] = new Rectangle (childX, childY, childWidth, childHeight);
+			} else {
+				child.setBounds (childX, childY, childWidth, childHeight);
+			}
+		}
+		y += spacing + childHeight;
+		maxY = Math.max (maxY, y);
+	}
+	maxY = Math.max (clientY + marginTop + marginHeight, maxY - spacing);
+	if (!wrapped) maxY += marginBottom + marginHeight;
+	if (move && (justify || fill || center)) {
+		int space = 0, margin = 0;
+		if (!wrapped) {
+			space = Math.max (0, (height - maxY) / (count + 1));
+			margin = Math.max (0, ((height - maxY) % (count + 1)) / 2);
+		} else {
+			if (fill || justify || center) {
+				int last = 0;
+				if (count > 0) wraps [count - 1] = maxWidth;
+				for (int i=0; i<count; i++) {
+					if (wraps [i] != 0) {
+						int wrapCount = i - last + 1;
+						if (justify) {
+							int wrapY = 0;
+							for (int j=last; j<=i; j++) {
+								wrapY += bounds [j].height + spacing;
+							}
+							space = Math.max (0, (height - wrapY) / (wrapCount + 1));
+							margin = Math.max (0, ((height - wrapY) % (wrapCount + 1)) / 2);
+						}
+						for (int j=last; j<=i; j++) {
+							if (justify) bounds [j].y += (space * (j - last + 1)) + margin;
+							if (fill) {
+								bounds [j].width = wraps [i];
+							} else {
+								if (center) {
+									bounds [j].x += Math.max (0, (wraps [i] - bounds [j].width) / 2);
+								}
+							}
+						}
+						last = i + 1;
+					}
+				}
+			}
+		}
+		for (int i=0; i<count; i++) {
+			if (!wrapped) {
+				if (justify) bounds [i].y += (space * (i + 1)) + margin;
+				if (fill) {
+					bounds [i].width = maxWidth;
+				} else {
+					if (center) {
+						bounds [i].x += Math.max (0, (maxWidth - bounds [i].width) / 2);
+					}
+				}
+
+			}
+			children [i].setBounds (bounds [i]);
+		}
+	}
+	return new Point (x + maxWidth + marginRight + marginWidth, maxY);
+}
+
+/**
+ * Returns a string containing a concise, human-readable
+ * description of the receiver.
+ *
+ * @return a string representation of the layout
+ */
+@Override
+public String toString () {
+	String string = getName ()+" {";
+	string += "type="+((type != SWT.HORIZONTAL) ? "SWT.VERTICAL" : "SWT.HORIZONTAL")+" ";
+	if (marginWidth != 0) string += "marginWidth="+marginWidth+" ";
+	if (marginHeight != 0) string += "marginHeight="+marginHeight+" ";
+	if (marginLeft != 0) string += "marginLeft="+marginLeft+" ";
+	if (marginTop != 0) string += "marginTop="+marginTop+" ";
+	if (marginRight != 0) string += "marginRight="+marginRight+" ";
+	if (marginBottom != 0) string += "marginBottom="+marginBottom+" ";
+	if (spacing != 0) string += "spacing="+spacing+" ";
+	string += "wrap="+wrap+" ";
+	string += "pack="+pack+" ";
+	string += "fill="+fill+" ";
+	string += "justify="+justify+" ";
+	string = string.trim();
+	string += "}";
+	return string;
+}
+}