Hi Stanley,
The following method works good.

#DEFINE EX_LOGOFF 0
#DEFINE EX_SHUTDOWN 1
#DEFINE EX_REBOOT 2
#DEFINE EX_FORCE 4
#DEFINE EX_POWEROFF 8

DECLARE SHORT ExitWindowsEx IN Win32API;
SHORT uFlags, INTEGER dwReserved

*=ExitWindowsEx(EX_LOGOFF,0) && equal to "=ExitWindowsEx(0,0)"
=ExitWindowsEx(EX_SHUTDOWN,0) && equal to "=ExitWindowsEx(1,0)"
*=ExitWindowsEx(EX_REBOOT,0) && equal to "=ExitWindowsEx(2,0)"
*=ExitWindowsEx(EX_FORCE,0) && equal to "=ExitWindowsEx(4,0)"
*=ExitWindowsEx(EX_POWEROFF,0) && equal to "=ExitWindowsEx(8,0)"