[Qt-interest] Mdi area subwindow closed event invoke in main window

[Radiceski, Darko]

Hi all,
 
I hope someone can help me with the following question:
 
I have a QT Gui application which has a QMdi area to which i add widgets
as sub windows:
 
_mMyDialog = new MyWidget();

_mMyDialog->setAttribute(Qt::WA_DeleteOnClose);

_mMdiArea->addSubWindow(_mMyDialog );

In the Widget that is now a subwindow to the mdi are i have a button
which when clicked i would like to close the widget/sub window and also
raise an event in the MainWindow that created the widget/subwindow that
will tell me that my close button has been clicked.

What is the best way to achieve that? In a nutshell i would like to know
when the subwindow is closed.

I have tried installing an event filter on the subwindow/widget and in
the event filter monitoring for the 

case QEvent::Close:

That does call the event when i close the widget but also gets invoked
by close on main window and so on. 

Also i have noticed that this event gets called twice even if i check
the type of qobject 

Any advice on this?

Thank you for your help.

 
Dan

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