How to reimplement closeEvent, in the main window of an MDI application

[barebones]

I just found that the close() slot of widgets returns a bool, with a value precisely intended for the case at hand. So a better solution is probably not to use closeAllSubWindows() at all, and code instead the closeEvent as follows:

void	MainWindow::closeEvent (QCloseEvent* event)
{
	QList<QMdiSubWindow*>	list = mdi->subWindowList ();
 
	for (int i = 0; i < list.size (); i++)
		if (!list[i]->close ()) {
			event->ignore ();
			return;
		}
 
	event->accept ();
}

void	MainWindow::closeEvent (QCloseEvent* event)
{
	QList<QMdiSubWindow*>	list = mdi->subWindowList ();

	for (int i = 0; i < list.size (); i++)
		if (!list[i]->close ()) {
			event->ignore ();
			return;
		}

	event->accept ();
}

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which will stop the procedure at the first MDI child that cancels the event.

I'm open to hear how other people have coded their MDI apps' closeEvent.