Main window focus problem

[A Former User]

I am opening an another window from my main window..
What I want is, when the new window is opened, my main window should be disabled(deactivate).
and the main window should be enabled only if the new window is closed.
how can i do this..

Thanks in advance..

[A Former User]

Make your window / dialog "modal":http://doc.qt.nokia.com/4.7/qdialog.html#modal-dialogs .

[A Former User]

If your opened window is a QDialog based widget, you can make it by
@setModal(true)@
For QWidget based widget, try
@setWindowModality ( Qt::WindowModality windowModality )@

And these 2 are all using/in the event loop