>>I put this code into xboot.prg and then ran it... nothing happened.
>>
>>Is there more I need to know / do?
>>
>>Thanks
>>
>>>>I need to lock a PC so that it runs my app on startup and reboots when my app exits...
>>>>
>>>>Any ideas?
>>>
>>>DECLARE INTEGER ExitWindowsEx IN WIN32API INTEGER uFlags, INTEGER nReserved
>>>ExitWindowsEx(2 + 4 + 16, 0)
>>>
>
>It worked on the machine I tested at home; try using 6 (drop the ForceIfHung flag, 0x10, from the flag mix) rather than 22, since that might not be in whatever version of the API you're using. It's a relatively late addition to the API.

I just checked - under NT, even a privileged user, without the necessary permissions can only force a logout; you can't force a shutdown or reboot unless the user has the Shut Down The System explicitly granted; the best you can do is force a logout. This is normally only granted to Administrators and Server Operators; Domain Administrators do not get this by default.