Method showMessage

src/main/java/file/engine/frames/TaskBar.java:237–239

将消息放入队列中 @param caption 标题 @param message 消息 @param event 携带的事件

(String caption, String message, Event event)

     * @param event   携带的事件
     */
    private void showMessage(String caption, String message, Event event) {
        messageQueue.add(new MessageStruct(caption, message, event));
    }

    /**
     * 显示消息