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.