How can I replace the default action for QTextEdit's Ctrl + Z shortcut?

[ZeHgS]

Hi!

I want to replace my QTextEdit's default Ctrl + Z action with one of my own. For some reason overriding the function did not work.

If I simply add a shortcut as I would normally do if it didn't already exist, it works for, say, "Ctrl+M" but not "Ctrl+Z". I am assuming this is because it is already assigned. How can I disable it?

Thanks a lot!

[SGaist]

Hi,

Which function did you override ?

[ZeHgS]

Thanks a lot for replying!

"undo". Is that not the right one?

[SGaist]

That method is not virtual so you can't do that.

Depending on what you wan't to do, you can re-implement the keyPressEvent method and catch there the QKeySequence::Undo.

Just take into account that your users will likely be very surprised if undo does not do its job in a standard fashion.

[ZeHgS]

Thanks for the advice. This will only be used internally!

Do I just do

if event.key() == QKeySequence.Undo:

or do I check for Z and the Ctrl modifier?

        if event.key() == Qt.Key_Z:
            modifiers = QApplication.keyboardModifiers()

            if modifiers == Qt.Key_Control:
                print('here')

Neither one worked, unfortunately

[SGaist]

Even if internal, your coworkers may come at you with pitchforks and torches ;-)

You should use the matches function.

[ZeHgS]

Unfortunately the following did not work either. The two key checks below work just fine:

    def key_pressed_event(self, event):
        if event.matches(QKeySequence.Undo):
            print('here')

        if event.key() == Qt.Key_Shift:
            if self.underMouse():
                self.toggle_paragraph_select()

        elif event.key() == Qt.Key_Alt:
            if self.underMouse():
                self.toggle_clicked_word()

key_pressed_event is called by keyPressEvent in my main window.

[SGaist]

You should implement that in a subclass of QTextEdit.