本程序是一个锁定屏幕的功能，当你要暂时离开你的电脑时，该程序就能很好的锁定你的电脑，代码比较简单易懂，有兴趣的朋友可以载下来参考。-This procedure is a function of locking the screen, when you want to temporarily leave your computer, the program can be a very good lock your computer, the code is relatively simple t