nothing I thought would work did. The ThisForm.LostFocus() event doesn't fire when the user changes to another application, only when they change to another form within a vfp app. ThisForm.DeActivate() works the same way. I couldn't find any events at the _VFP level that would do this. I'm not sure a Windows API call would do it either, since VFP doesn't appear to be able to sense it.
Foxheads, how are you doing this?
Nebraska Dept of Revenue