在RCP程序中最小化窗口到系统托盘并不像SWT程序那样直接。在网上找了一段代码，自己试验通过了，现在贴出来大家分享。
在RCP中继承WorkbenchAdvisor的子类中添加下面代码就可以了。
public void postStartup() {
super.postStartup();
final Shell shell = PlatformUI.getWorkbench().getActiveWorkbenchWindow().getShell();
shell.addShellListener(new ShellAdapter() {
public void shellIconified(ShellEvent e) {
shell.setVisible(false);
}
});
createSystemTray();
}
private void createSystemTray() {
Tray tray = Display.getDefault().getSystemTray();
TrayItem item = new TrayItem(tray, SWT.NONE);
item.setText("JDishNetwork");
item.setToolTipText("JDishNetwork");
Image image = new Image(Display.getDefault(), 16, 16);
item.setImage(image);
this.trayManager = new TrayItemManager();
item.addSelectionListener(this.trayManager);
item.addListener(SWT.MenuDetect, this.trayManager);
}
private class TrayItemManager implements SelectionListener, Listener {
// TODO: Convert to one class
private final class WindowStateListener extends SelectionAdapter {
public void widgetSelected(SelectionEvent e) {
minimizeWindow();
}
}
private final class RestoreWindowListener extends SelectionAdapter {
public void widgetSelected(SelectionEvent e) {
restoreWindow();
}
}
private boolean minimized = false;
private Menu menu;
private MenuItem[] menuItems = new MenuItem[0];
private RestoreWindowListener restoreWindowListener;
private WindowStateListener minimizeWindowListener;
public TrayItemManager() {
this.menu = new Menu(PlatformUI.getWorkbench().getActiveWorkbenchWindow().getShell(), SWT.POP_UP);
this.restoreWindowListener = new RestoreWindowListener();
this.minimizeWindowListener = new WindowStateListener();
}
protected void closeApplication() {
PlatformUI.getWorkbench().close();
}
public void widgetSelected(SelectionEvent e) {
//
}
public void widgetDefaultSelected(SelectionEvent e) {
if (this.minimized) {
restoreWindow();
} else {
minimizeWindow();
}
}
protected void minimizeWindow() {
PlatformUI.getWorkbench().getActiveWorkbenchWindow().getShell().setMinimized(true);
this.minimized = true;
}
protected void restoreWindow() {
Shell shell = PlatformUI.getWorkbench().getActiveWorkbenchWindow().getShell();
shell.open();
shell.setMinimized(false);
shell.forceActive();
shell.forceFocus();
this.minimized = false;
}
public void showMenu() {
clearItems();
MenuItem mi;
MenuItem closeItem;
mi = new MenuItem(this.menu, SWT.PUSH);
closeItem = new MenuItem(this.menu, SWT.NONE);
closeItem.setText("Close");
closeItem.addSelectionListener(new SelectionAdapter() {
public void widgetSelected(SelectionEvent e) {
closeApplication();
}
});
this.menuItems = new MenuItem[] { mi, closeItem };
if (this.minimized) {
mi.setText("Maximize");
mi.addSelectionListener(this.restoreWindowListener);
} else {
mi.setText("Minimize");
mi.addSelectionListener(this.minimizeWindowListener);
}
this.menu.setVisible(true);
}
private void clearItems() {
for (int i = 0; i < this.menuItems.length; i++) {
MenuItem item = this.menuItems[i];
item.removeSelectionListener(this.minimizeWindowListener);
item.removeSelectionListener(this.restoreWindowListener);
this.menuItems[i].dispose();
}
}
public void handleEvent(Event event) {
showMenu();
}
}