public void updateRollingLabel(){
		try {
			if (!display.isDisposed()) {
				Runnable runnable = new Runnable() {
					@Override
					public void run() {
						MessageQueue messageQueue = MessageQueue.getInstance();
						for(int i=0;i<4;i++){
							rollingLabels[i].setText(messageQueue.getMessage(i));
						}
					}
				};
				display.syncExec(runnable);
			}
		}
		catch (SWTException e) {
			System.out.println("swt 的线程真让人伤心");
		}
	}