WTrayIconPeer.java 文件源码

@Override
public synchronized void showPopupMenu(final int x, final int y) {
    if (isDisposed())
        return;

    SunToolkit.executeOnEventHandlerThread(target, new Runnable() {
            @Override
            public void run() {
                PopupMenu newPopup = ((TrayIcon)target).getPopupMenu();
                if (popup != newPopup) {
                    if (popup != null) {
                        popupParent.remove(popup);
                    }
                    if (newPopup != null) {
                        popupParent.add(newPopup);
                    }
                    popup = newPopup;
                }
                if (popup != null) {
                    ((WPopupMenuPeer)popup.getPeer()).show(popupParent, new Point(x, y));
                }
            }
        });
}