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diff --git a/bundles/org.eclipse.swt.win32.win32.x86_64/src/org/eclipse/swt/events/DragDetectListener.java b/bundles/org.eclipse.swt.win32.win32.x86_64/src/org/eclipse/swt/events/DragDetectListener.java
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+++ b/bundles/org.eclipse.swt.win32.win32.x86_64/src/org/eclipse/swt/events/DragDetectListener.java
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+/*******************************************************************************
+ * Copyright (c) 2000, 2016 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
+ *     Lars Vogel <Lars.Vogel@vogella.com> - Bug 502576
+ *******************************************************************************/
+package org.eclipse.swt.events;
+
+
+import org.eclipse.swt.internal.*;
+
+/**
+ * Classes which implement this interface provide methods
+ * that deal with the events that are generated when a drag
+ * gesture is detected.
+ * <p>
+ * After creating an instance of a class that implements
+ * this interface it can be added to a control using the
+ * <code>addDragDetectListener</code> method and removed using
+ * the <code>removeDragDetectListener</code> method. When the
+ * drag is detected, the drageDetected method will be invoked.
+ * </p>
+ *
+ * @see DragDetectEvent
+ *
+ * @since 3.3
+ */
+@FunctionalInterface
+public interface DragDetectListener extends SWTEventListener {
+
+/**
+ * Sent when a drag gesture is detected.
+ *
+ * @param e an event containing information about the drag
+ */
+void dragDetected(DragDetectEvent e);
+}