ExitWindowsEx()这个关机函数，有时电脑关不了哦
可能是程序开的比较多
然后执行这个函数就关不了机
不过如果我把程序关的差不多了，还是可以的
我的是XP
具体写法是：ExitWindowsEx(EWX_SHUTDOWN|EWX_POWEROFF,0);
不知道有什么更好的方法吗？就是即使程序很多，最后还是能达到关机的目的
[解决办法]
ExitWindowsEx
The ExitWindowsEx function either logs off the current user, shuts down the system, or shuts down and restarts the system. It sends the WM_QUERYENDSESSION message to all applications to determine if they can be terminated.
//这里说到他将终止all applications
During a shutdown or log-off operation, applications that are shut down are allowed a specific amount of time to respond to the shutdown request. If the time expires, the system displays a dialog box that allows the user to forcibly shut down the application, to retry the shutdown, or to cancel the shutdown request. If the EWX_FORCE value is specified, the system always forces applications to close and does not display the dialog box.
//这段说到他在固定时间内applications that are shut down are allowed
//一旦超时，会弹出一个对话跨能够进行选择强制关闭程序还是重试还是取消
//当EWX_FORCE被设置时，系统会强制关闭 applications
原因可能就是因为程序多，超时了
看看能不能把时间设置长点，不然就EWX_FORCE
