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!