Cetin,
Yes. The child forms are InTopLevel.
Basically, I wanted to check where this window is going. So I reduced the size of my main form and then found that the window I am activating is actually going back of the main form. So thinking that it must be getting displayed in FoxPro main screen, I started digging and came to this solution. I know this is not the correct solution. I will go mad setting _screen.visible every time I want to activate any window. There must be somthing I am doing wrong or missing.

Regards,
Yashodhan