Hi All,
Thanx a lot to all of you for such a quick response.
QPixmap::grabWidget()

is not going to help me out since QT never gives me ID of windows which are not QT's widget except desktop widget.

Suppose if i want to take snap shot of notepad opened on my system then how it can be done using grabWidget() or grabWindow()???
I tried them but it doesn't works for me.
If you know how can i take snapshot of notepad or any app then please tell me
with some descriptive code.

Well it might be possible that my assumption are not right then anybody here knows that how can i achieve ii using QT's cross platform library.

Any help would be appreciated.
Thnx in advance.