>And how do you add VFP code to the loop to intercept a message that isn't currently handled by VFP's Event loop monitor? You need to add a handler to be dispatched, and without the ability to specify an entrypoint for dispatch on message receipt, you're kinda stuck - sort of like you were with VB4, before AddressOf() was a reality.

You may be right. Performance issues stopped me before I got that far. However, my SWAG is that the VFP message loop I wrote will snag all of the messages whether they're accounted for in VFP's loop or not. It's a SWAG because if the code doesn't punt the messages to VFP, VFP never sees them.

It's all semantics anyway, since my experience bears out that a message loop in pure VFP isn't practical. You do bring up some good points, though.