有个函数， 请各位帮忙看一下。 谢了！

Question

void CHappyNYDlg::OnButtonDonotk() 
{
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);

}WIN2000 和 WINXP 下关机， WINME 下却是注销， Why？？？

Answer 1

EWX_POWEROFF required Windows NT/2000 or later.

Answer 2

Try to use EWX_SHUTDOWN.

Answer 3

用 
 
ExitWindowsEx(EWX_SHUTDOWN | EWX_FORCE, NULL);在win9x下最好先关掉explore.exe进程。::Quote::MSDNWindows 95/98/Me: Because of the design of the shell, calling ExitWindowsEx with EWX_FORCE fails to completely log off the user (the system terminates the applications and displays the Enter Windows Password dialog box, however, the user's desktop remains.) To log off the user forcibly, terminate the Explorer process before calling ExitWindowsEx with EWX_LOGOFF and EWX_FORCE.