[SOLVED] How to detect SHIFT key release event?

[xtingray]

Hi!

I am trying to detect the moment when the user release the SHIFT key from my application. The thing is that the keyReleaseEvent() is actually called when I release that modifier, but for now I can't figure out how to detect that the modifier really was SHIFT instead other key.

@
void MyClass::keyReleaseEvent(QKeyEvent *event)
{
qDebug() << "MyClass::keyReleaseEvent() -> key: " << event->text();
qDebug() << "MyClass::keyReleaseEvent() -> modifiers(): " << event->modifiers();
if (event->modifiers() == Qt::ShiftModifier) { // This if is NOT working :(
qDebug() << "MyClass::keyReleaseEvent() -> key unpressed: SHIFT";
}
}
@

Any suggestion? Thanks!

[SGaist]

Hi,

One thing that you could do would be to store the modifier(s) on keyPressEvent and check against them in keyReleaseEvent.

Hope it helps

[xtingray]

Simple but handy. Shame on me!

Thanks! :)

[SGaist]

Some times the solution can be simple :)

You're welcome !

Happy coding :)

[dschiller]

@SGaist Can you please give a small code example ?

[dschiller]

Found a solution.

def _event(self, event: QEvent):

    if event.type() == event.Type.KeyRelease:

        # region Release SHIFT Key
        if QKeyEvent(event).key() == Qt.Key.Key_Shift and self.shift_key_locked:
            self.shift_key_locked = False
        # endregion

    if event.type() == event.Type.KeyPress:

        # region SHIFT Key
        if QKeyEvent(event).modifiers() == Qt.KeyboardModifier.ShiftModifier and not self.shift_key_locked:
            self.shift_key_locked = True
        # endregion