众所周知，在9x下关机只要ExitWindows(0,0)就行了，可是在NT/2000下这个函数
的执行结果仅是注销而已，那么如何在NT/2000下实现关机呢？看看下面这个函数吧！
void ShutDown(void)
{
OSVERSIONINFO osv;
osv.dwOSVersionInfoSize=sizeof OSVERSIONINFO;
GetVersionEx(&osv);
if(osv.dwPlatformId==VER_PLATFORM_WIN32_NT)
{
HANDLE hProcess,hToken;
TOKEN_PRIVILEGES Privileges;
LUID luid;
hProcess=GetCurrentProcess();
OpenProcessToken(hProcess,TOKEN_ADJUST_PRIVILEGES,&hToken);
Privileges.PrivilegeCount=1;
LookupPrivilegeValue(NULL,SE_SHUTDOWN_NAME,&luid);
Privileges.Privileges[0].Luid=luid;
Privileges.Privileges[0].Attributes=SE_PRIVILEGE_ENABLED;
AdjustTokenPrivileges(hToken,FALSE,&Privileges,NULL,NULL,NULL);
}
ExitWindowsEx(EWX_POWEROFF,0);
}
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