利用系统热键可以方便用户的操作，比如经常使用的Alt + Tab可以快速切换窗口；Crtl + Alt +

Delete键可以调出Windows任务管理器或重启机器；oicq软件也会注册系统热键方便用户的操作，等等。本程序就注册一个系统热键Alt + Z，在应用程序执行的任何时候只要按下该热键就会弹出一个消息对话框。

-system hotkeys can use user-friendly operation, For example, the regular use of the Alt-Tab window can quickly switch; Crtl-Alt-Delete keys could be released Windows Task Manager or the reopening of machinery; oicq software registration system hotkeys will be user-friendly operation, and so on. The procedure for registering a system hotkeys Alt Z, Application procedures for the implementation of any time by pressing the hotkey will pop up a message box.