Patrick,

If you are trying to create a system where your app is the only app that's supposed to be running at all, then you can replace a line in system.ini:

[boot]
shell=YourApp.exe

>But there still is a problem, i never call any API before
>>Can u give me a sample of how to call the Win32 API SetWindowPos()?
>
>Click the link to the W i k i in my sig, there's several examples for using API functions. This topic http://fox.wikis.com/wc.dll?Wiki~VFPHelp~VFP specifically shows how to use SetWindowPos
>
>
>Thanks to u all for helpping , now i can cover the entire screen with my form even the taskbar, i can stop the ALT+TAB key from functioning....
>
>but there is still a problem,i dont know what the name of this key (the key with a window icon next to the CTRL key and the ALT key), when i press it
>the taskbar appeal.