QDialog Cleanup

[SixDegrees]

I have a modeless QDialog owned by a QGraphicsScene. All works well, but if I close the main application while the dialog is showing, the dialog persists unless I manually close it. I've tried calling close(), accept() and other likely functions from the scene's destructor, to no avail.

What do I have to do to have this dialog close when the application shuts down?

[kemp]

Make the dialog global to the QGraphicsScene with parent = NULL and delete it in the QGraphicsScenes destructor.

[SixDegrees]

Make the dialog global to the QGraphicsScene with parent = NULL and delete it in the QGraphicsScenes destructor.

That's where I started, and where I've returned to; no joy, the dialog persists after the application shuts down.

[tbscope]

Does the following work?


QCloseEvent closeEvent();
QApplication::sendEvent(dialog, &closeEvent);

[SixDegrees]

Does the following work?


QCloseEvent closeEvent();
QApplication::sendEvent(dialog, &closeEvent);

Nope. Still there.

[tbscope]

This means you do not have an event loop. I think, not sure though.

Edit: or, the dialog doesn't handle the event of course.

Can you repeat the behaviour in a simple example?

[SixDegrees]

I kind of solved this. I left pretty much all my code in place, but I know construct the dialog in the main application and pass a pointer to it through a set routine in my QGraphicsScene. As long as I remember to initialize everything immediately following construction, this works, and the dialog behaves as expected upon program termination - that is, it vanishes.

It isn't a pretty solution, but it works. There's something odd about QGraphicsView/Scene/Item; I've had strange parenting issues with these classes in the past, and I guess this is just another one.