Mark,

To lock Windows, I used the following:

*- Lock window
DECLARE INTEGER GetDesktopWindow IN WIN32API
DECLARE INTEGER LockWindowUpdate IN WIN32API ;
INTEGER lnHandle

lnDeskTopWin = GetDesktopWindow()
=LockWindowUpdate(lnDeskTopWin)

To unlock ... :
*- Unlock window
=LockWindowUpdate(0)

HTH
Doug

>Is there any Windows API function through complete desktop can be locked . I
>have seen LockWindowUpdate , but its same like Foxpro’s LockScreen. Where only
>one window can be locked at a time.