QPushButton & shortcut

Question

I have a problem with Qt 4.6.0 and a shortcut for QPushButtons :

I want to display special text in QTextEdit when the user presses the button button , but only when the button pressed, as soon as it is released, I need another text.

Everything works fine, but now I want to add a shortcut (say F1 ) to perform the same operation, when I press F1 , it displays something special in QTextEdit 'until I release the key . How should I do it?

I added shortCut to my button , but when I press F1 it flickers, it likes while I press F1 , a lot of signals sent ... I want my QTextEdit when I press F1 , and then change back when I release key ...

Hope my question is clear!

Thanks so much for your advice!

Answer 1

I think the easiest solution to this problem is to use installEventFilter() for the parent object (window) and filter the QEvent::MouseButtonPress and QEvent::MouseButtonRelease .

 bool MainWindow::eventFilter(QObject *obj, QEvent *event) { if (obj == textEdit) { if (event->type() == QEvent::KeyPress) { QKeyEvent *keyEvent = static_cast<QKeyEvent*>(event); qDebug() << "Ate key press" << keyEvent->key(); return true; } else { return false; } } else { // pass the event on to the parent class return QMainWindow::eventFilter(obj, event); } } 

Answer 2

The button presses the () button when it is activated with the mouse, spacebar, or keyboard shortcut. You will need to handle keystrokes and keys to do what you want.