这个程序可以在点击最小化按钮后, 主窗体最小化到系统托盘, 再点击托盘的图标, 主窗体就恢复显示. 是 Eclipse Tray 插件的原型. 代码修改自 Eclipser.org 的官方展示代码:
/** *//*******************************************************************************
* Copyright (c) 2000, 2005 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
*******************************************************************************/
/**//*
* Tray example snippet: place an icon with a popup menu on the system tray
*
* For a list of all SWT example snippets see
* http://www.eclipse.org/swt/snippets/
*
* @since 3.0
*/
import org.eclipse.jface.dialogs.MessageDialog;
import org.eclipse.swt.*;
import org.eclipse.swt.events.ShellEvent;
import org.eclipse.swt.events.ShellListener;
import org.eclipse.swt.graphics.*;
import org.eclipse.swt.widgets.*;
public class Snippet143 
{
public static void main(String[] args) {
Display display = new Display();
final Shell shell = new Shell(display);
shell.setText("Eclipse SDK");
shell.setImage(new org.eclipse.swt.graphics.Image(Display.getCurrent(),
"icons/sample.gif"));
Image image = shell.getImage();
final Tray tray = display.getSystemTray();
if (tray == null) {
System.out.println("The system tray is not available");
} else {
final TrayItem item = new TrayItem(tray, SWT.NONE);
item.setVisible(false);
item.setToolTipText("SWT TrayItem");
item.addListener(SWT.Show, new Listener() {
public void handleEvent(Event event) {
System.out.println("show");
}
});
item.addListener(SWT.Hide, new Listener() {
public void handleEvent(Event event) {
System.out.println("hide");
}
});
item.addListener(SWT.Selection, new Listener() {
public void handleEvent(Event event) {
System.out.println("selection");
toggleDisplay(shell, tray);
}
});
item.addListener(SWT.DefaultSelection, new Listener() {
public void handleEvent(Event event) {
System.out.println("default selection");
}
});
final Menu menu = new Menu(shell, SWT.POP_UP);
MenuItem mi = new MenuItem(menu, SWT.PUSH);
mi.setText("Show " + shell.getText());
mi.addListener(SWT.Selection, new Listener() {
public void handleEvent(Event event) {
toggleDisplay(shell, tray);
}
});
menu.setDefaultItem(mi);
new MenuItem(menu, SWT.SEPARATOR);
mi = new MenuItem(menu, SWT.PUSH);
mi.setText("&About");
mi.addListener(SWT.Selection, new Listener() {
public void handleEvent(Event event) {
MessageDialog.openInformation(
shell,
"EclipseTray Plug-in 1.0b by BeanSoft",
"This plugin will minimize Eclipse window to tray.\n" +
"Author: beansoft@126.com\n" +
"Eclipse version tested: 3.2 win32\nDate: 2006-12-14");
}
});
item.addListener(SWT.MenuDetect, new Listener() {
public void handleEvent(Event event) {
menu.setVisible(true);
}
});
item.setImage(image);
}
shell.addShellListener(new ShellListener() {
public void shellActivated(ShellEvent e) {
// TODO Auto-generated method stub
}
public void shellClosed(ShellEvent e) {
// TODO Auto-generated method stub
}
public void shellDeactivated(ShellEvent e) {
// TODO Auto-generated method stub
}
public void shellDeiconified(ShellEvent e) {
// TODO Auto-generated method stub
}
public void shellIconified(ShellEvent e) {
toggleDisplay(shell, tray);
}
});
shell.setBounds(50, 50, 300, 200);
shell.open();
while (!shell.isDisposed()) {
if (!display.readAndDispatch())
display.sleep();
}
image.dispose();
display.dispose();
}
/** *//**
* Toggle the display of current shell and tray icon.
*
* @author BeanSoft(beansoft@126.com)
* @param shell
* @param tray
*/
protected static void toggleDisplay(Shell shell, Tray tray) {
try {
shell.setVisible(!shell.isVisible());
tray.getItem(0).setVisible(!shell.isVisible());
// TODO Get focus???! Like QQ?
// shell.setFocus();
// shell.setActive();
} catch (Exception e) {
e.printStackTrace();
// TODO: handle exception
}
}
}
