snippet225.java

Eclipse JAVA开发软件中SWT各控件范例源码

/*******************************************************************************
 * Copyright (c) 2000, 2006 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;
  
/*
 * Tooltip example snippet: create a balloon tooltip for a tray item
 *
 * For a list of all SWT example snippets see
 * http://www.eclipse.org/swt/snippets/
 * 
 * @since 3.2
 */
import org.eclipse.swt.*;
import org.eclipse.swt.graphics.*;
import org.eclipse.swt.widgets.*;

public class Snippet225 {

public static void main(String[] args) {
	Display display = new Display();
	Shell shell = new Shell(display);
	Image image = null;
	final ToolTip tip = new ToolTip(shell, SWT.BALLOON | SWT.ICON_INFORMATION);
	tip.setMessage("Here is a message for the user. When the message is too long it wraps. I should say something cool but nothing comes to my mind.");
	Tray tray = display.getSystemTray();
	if (tray != null) {
		TrayItem item = new TrayItem(tray, SWT.NONE);
		image = display.getSystemImage(SWT.ICON_INFORMATION);
		item.setImage(image);
		tip.setText("Notification from a tray item");
		item.setToolTip(tip);
	} else {
		tip.setText("Notification from anywhere");
		tip.setLocation(400, 400);
	}
	Button button = new Button (shell, SWT.PUSH);
	button.setText("Press for balloon tip");
	button.addListener(SWT.Selection, new Listener() {
		public void handleEvent(Event event) {
			tip.setVisible(true);
		}
	});
	button.pack();
	shell.setBounds(50, 50, 300, 200);
	shell.open();
	while (!shell.isDisposed()) {
		if (!display.readAndDispatch()) display.sleep();
	}
	if (image != null) image.dispose();
	display.dispose();
}
}