I suggest that you look at the GDI+ objects. I know that some of them have
a clipping rectangle property so there may be a way to see if that clipping
rectangle is 'active' which would mean it was visible.
Robby
[quoted text, click to view] "Jose Michael Meo R. Barrido" <mike@rdmsinc.net> wrote in message
news:u5BC1YI1EHA.2716@TK2MSFTNGP14.phx.gbl...
> How to know if a certain control or window is visible on screen and not
> covered by other window(s)? please help.