lparameters tlLock
local lnHWnd
declare integer LockWindowUpdate in Win32API ;
  integer nHandle
if tlLock
  declare integer GetDesktopWindow in Win32API
  lnHWnd = GetDesktopWindow()
else
  lnHWnd = 0
endif tlLock
LockWindowUpdate(lnHWnd)
return

>Is there a Win32 API function or functions that is or are equivalent to the VFP lockscreen function (property) ? I need this for a delphi app. Thanks!