>Hi Mike,
>
>>>How do you define a handler for the undefined WM_ messages in straight VFP? Inquring minds and all that?
>>
>>Like you would with any other language, I suppose
>
>In any other language you would install either a system hook or create a new Window Class.

See my reply to Ed. I believe it's possible that a loop written in VFP will snag undefined messages (haven't test thoroughly). If this is true, a handler wouldn't be needed, at least as I understand the question.

>There's indeed one solution that could work in VFP, but it's not only slow, but also not reliable as it bases on polling the message queue using PeekMessage and eventually WaitMessage(). Since I've not tested this practically,

I have. I seem to recall something to do with Task Manager/End Process as the final solution. It's been a while since I've played with it, but what I remember is that VFP was not a happy EXE when trying that. Of course, VFP isn't terribly pleased when you try to intercept Windows messages, either.