qt - Intercepting Tab key press to manage focus switching manually

Question

I want to intercept Tab key press in my main window to prevent Qt from switching focus. Here's what I've tried so far:

bool CMainWindow::event(QEvent * e)
{
    if (e && e->type() == QEvent::KeyPress)
    {
        QKeyEvent * keyEvent = dynamic_cast<QKeyEvent*>(e);
        if (keyEvent && keyEvent->key() == Qt::Key_Tab)
            return true;
    }
    return QMainWindow::event(e);
}

This doesn't work, event isn't called when I press Tab. How to achieve what I want?

Answer 1

The most elegant way I found to avoid focus change is to reimplement in your class derived from QWidget the method bool focusNextPrevChild(bool next) and simply return FALSE. In case you want to allow it, return TRUE.

Like other keys you get now also the key Qt::Key_Tab in keyPressEvent(QKeyEvent* event)