>You may want to consider throwing the entire communications
>piece onto a separate thread rather than using a call back.
>
>My guess is that the call back corrupts VFP's event queue
>which appears to lock up the application. If you use threads
>you can just run a low priority poll to check for completion
>and then deal with the results there.
>
>+++ Rick ---

Hello Rick!

I agree with You. But it makes possible to use callback functions. Simply, make a new window "desktop" on the fly, and it will get the messages (new thread). The window will stay hidden. I applied this method in some of my fll.

BB