How to catch QDockWidget close window event?

[xtingray]

Hi!

of any of those widgets, I can trace this method:

void QDockWidget::closeEvent(QCloseEvent *event)

That's great but my requirement is different: I need to avoid that the QDockWidget get closed directly and instead, to show a warning dialog.

Is this possible? Thanks!

[mrjj]

@xtingray said:
Hi
Im not completely sure why

void MyDockWidget::closeEvent(QCloseEvent *event)
{
if (USERCONFIRM()) {
event->accept();
} else {
event->ignore();
}
}

Do not works for Docks as it does for say mainwindow?

[xtingray]

@mrjj As far as I understand, the closeEvent() method is called AFTER the QDockWidget is already closed, that could be the reason your code doesn't work (just an idea).

[mrjj]

@xtingray
Ok, so that is different from other widgets as there you
can event->ignore() to avoid it closing completely.
I have never tried with Dock though.

[xtingray]

@mrjj I was wrong, you were right!!! I was testing this and it's working!

void MyDockWidget::closeEvent(QCloseEvent *event)
{
    event->ignore();
}

Thanks! :D

[mrjj]

Oh, so it was like other widgets. Good testing!
Docks are very special so you never know :)
super!

[kshegunov]

@xtingray
To stop the event, you're supposed to call accept(), meaning you've handled it. Here probably it's not very important, but I'd do it like this:

void MyDockWidget::closeEvent(QCloseEvent * event)
{
    event->accept();
    QDockWidget::closeEvent(event);
}

Kind regards.

[Chris Kawa]

@kshegunov Actually closeEvent is kinda special in that way and ignoring it is the way to prevent window from closing. It's different from other events but documented.

[kshegunov]

@Chris-Kawa
Oops! Good catch!