QDialogs, closeEvent() and the Escape Key

cuddlykittens11

The "documentation here":http://qt-project.org/doc/qt-4.8/qdialog.html#escape-key leads me to believe that when I press the Escape Key (when a Dialog is open and focused), that it should trigger the "QDialog::closeEvent()" function. The only problem is that it's not. Am I misinterpreting something here?

I want my users to be able to close the Dialog with a press of the ESC Key, but because "closeEvent()" is not triggered, it doesn't return a result from the "QDialog::exec()" method.

Also, is there a way that I close the dialog window from the constructor? These dialogs are also supposed to be singletons.

alex_malyu

As far as I understand documentation this is only related to modeless dialog.
Calling exec() means it is modal.

Regards,
Alex

raven-worx

[quote author="cuddlykittens11" date="1421968886"]The "documentation here":http://qt-project.org/doc/qt-4.8/qdialog.html#escape-key leads me to believe that when I press the Escape Key (when a Dialog is open and focused), that it should trigger the "QDialog::closeEvent()" function. The only problem is that it's not. Am I misinterpreting something here?

I want my users to be able to close the Dialog with a press of the ESC Key, but because "closeEvent()" is not triggered, it doesn't return a result from the "QDialog::exec()" method.
[/quote]

It may be that there is a shortcut conflict with the Escape key? What are the content widgets of your dialog? Are you using the Esc key as a shortcut there?

[quote author="cuddlykittens11" date="1421968886"]
Also, is there a way that I close the dialog window from the constructor? These dialogs are also supposed to be singletons.[/quote]

i don't quite understand what you are trying to do? You are calling QDialog::exec() out of a constructor? If so you shouldn't do that.

[quote author="alex_malyu" date="1421983656"]As far as I understand documentation this is only related to modeless dialog.
Calling exec() means it is modal.[/quote]

i would say it's the other way around

cincirin

[quote author="cuddlykittens11" date="1421968886"]it doesn't return a result from the "QDialog::exec()" method.[/quote]

You are wrong here. QDialog::Rejected is returned if Esc key is pressed.

[quote author="cuddlykittens11" date="1421968886"]
Also, is there a way that I close the dialog window from the constructor? [/quote]

Yes:
@
QTimer::singleShot(0, this, [=](){ reject(); })
@

cuddlykittens11

Okay, I cleaned up my dialog issues. Thanks for the help!