snippet276.java

对于可视的桌面开发系统的一些详细的设计资料

/*******************************************************************************
 * Copyright (c) 2000, 2007 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;

/*
 * Display snippet: map from control-relative to display-relative coordinates
 * 
 * For a list of all SWT example snippets see
 * http://www.eclipse.org/swt/snippets/
 */
import org.eclipse.swt.SWT;
import org.eclipse.swt.graphics.*;
import org.eclipse.swt.widgets.*;

public class Snippet276 {

public static void main (String[] args) {
	final Display display = new Display ();
	Shell shell = new Shell (display);
	shell.setBounds (200, 200, 400, 400);
	Label label = new Label (shell, SWT.NONE);
	label.setText ("click in shell to print display-relative coordinate");
	Listener listener = new Listener () {
		public void handleEvent (Event event) {
			Point point = new Point (event.x, event.y);
			System.out.println (display.map ((Control)event.widget, null, point));
		}
	};
	shell.addListener (SWT.MouseDown, listener);
	label.addListener (SWT.MouseDown, listener);
	label.pack ();
	shell.open ();
	while (!shell.isDisposed ()){
		if (!display.readAndDispatch ()) display.sleep ();
	}
	display.dispose ();
}

}