>Excuse me for being really dense--must be upcoming vacation! I don't see how an inkey loop in the called (?) app is going to prevent ALT-TAB...Sorry, but would elaborate? Thnx.
>
>>I don't know what is the real purpose. BTW, it's not difficult to put VFP app through INKEYed loop to imitate 'modal' situation.

I didn't mean to eliminate ALT-TAB, moreover I think it would be strange idea at least (if ever feasible). However, you could provide way to stop VFP app conditionally until external exe will finish some operation to some point.