Fake key events

[Bolick]

Thanks once again. I've found the issue and how to fix it.
Issue was: the event was sent to an object which was not in focus.
Resolution:
Before event sending I should have been get a pointer to the widget. And send event directly to this widget.

void my_app::key_press_release(int key, Qt::KeyboardModifiers modifier)
{
    QWidget * widget = QApplication::focusWidget();
 
    QKeyEvent key_press(QKeyEvent::KeyPress, key, modifier, NULL, false, 0 );
    QApplication::sendEvent(widget, &key_press);
 
    QKeyEvent key_release(QKeyEvent::KeyRelease, key, modifier, NULL, false, 0 );
    QApplication::sendEvent(widget, &key_release);
}

void my_app::key_press_release(int key, Qt::KeyboardModifiers modifier)
{
    QWidget * widget = QApplication::focusWidget();

    QKeyEvent key_press(QKeyEvent::KeyPress, key, modifier, NULL, false, 0 );
    QApplication::sendEvent(widget, &key_press);

    QKeyEvent key_release(QKeyEvent::KeyRelease, key, modifier, NULL, false, 0 );
    QApplication::sendEvent(widget, &key_release);
}

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