直接用于关闭操作系统，方便简洁快速实用。直接调用系统函数。实现比较容易-directly to the closure of the operating system to facilitate rapid practical simplicity. Direct call functions. To achieve easier

该程序用MFC实现将当前打开的搜有窗口都关闭-The realization of the program will be used MFC found at present there is a window open all closed