System menu close button(X) pressing interception

[ixSci]

Hi all!

I need to distinguish somehow whether the X button was pressed or application is requested to be closed by some other method. I need it because I've overloaded closeEvent() and ignored the event inside. But it prevents an OS from the graceful logout. So I need the method to not close the application by the X button pressing and don't mess with the logout mechanism at the same time. Is there a way to accomplish that in Qt?

Thank in advance!

[dangelog]

See the QSessionManager and QApplication::commitData documentation. You could set a flag there which will lead your windows to accept the closeEvent.

[goetz]

See "this thread":http://developer.qt.nokia.com/forums/viewthread/5223 too.