add snippet to show mouse wheel post

1 files changed, 69 insertions, 0 deletions

diff --git a/examples/org.eclipse.swt.snippets/src/org/eclipse/swt/snippets/Snippet268.java b/examples/org.eclipse.swt.snippets/src/org/eclipse/swt/snippets/Snippet268.java
new file mode 100644
index 0000000000..1307c3057e
--- /dev/null
+++ b/examples/org.eclipse.swt.snippets/src/org/eclipse/swt/snippets/Snippet268.java
@@ -0,0 +1,69 @@
+/*******************************************************************************
+ * Copyright (c) 2000, 2004 IBM Corporation and others.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ *     IBM Corporation - initial API and implementation
+ *******************************************************************************/
+package org.eclipse.swt.snippets;
+  
+/*
+ * UI Automation (for testing tools) snippet: post mouse wheel events to a styled text
+ *
+ * For a list of all SWT example snippets see
+ * http://www.eclipse.org/swt/snippets/
+ * 
+ * @since 3.0
+ */
+import org.eclipse.swt.*;
+import org.eclipse.swt.widgets.*;
+import org.eclipse.swt.custom.*;
+import org.eclipse.swt.graphics.Point;
+import org.eclipse.swt.layout.*;
+
+public class Snippet268 {
+
+public static void main(String[] args) {
+	final Display display = new Display();
+	Shell shell = new Shell(display);
+	shell.setLayout(new FillLayout());
+	StyledText styledText = new StyledText(shell, SWT.V_SCROLL);
+	String multiLineString = "";
+	for (int i = 0; i < 200; i++) {
+		multiLineString = multiLineString.concat("This is line number " + i + " in the multi-line string.\n");
+	}
+	styledText.setText(multiLineString);
+	shell.setSize(styledText.computeSize(SWT.DEFAULT, 400));
+	shell.open();
+	styledText.addListener(SWT.MouseWheel, new Listener() {
+		public void handleEvent(Event e){
+			System.out.println("Mouse Wheel event " + e);
+		}
+	});
+	final Point pt = display.map(shell, null, 50, 50);
+	new Thread(){
+		Event event;
+		public void run() {
+			for (int i = 0; i < 50; i++) {
+				event = new Event();
+				event.type = SWT.MouseWheel;
+				event.detail = SWT.SCROLL_LINE;
+				event.x = pt.x;
+				event.y = pt.y;
+				event.count = -2;
+				display.post(event);
+				try {
+					Thread.sleep(100);
+				} catch (InterruptedException e) {}
+			}
+		}	
+	}.start();
+	while (!shell.isDisposed()) {
+		if (!display.readAndDispatch()) display.sleep();
+	}
+	display.dispose();
+}
+}