Hello Wojtek
You can try another way:
1.- download lvwutil32 fron this
link2.-Use windows vis to get handle to your window.
3.-When you want to regain control over you window, use apropiate vi to declare your window top an active.
Hope it helps
Greetings
Alipio
---------------------------------------------------------
"Qod natura non dat, Salmantica non praestat"
---------------------------------------------------------