Distinguish between single and double click events in Qt

Question

I have a QAbstractItemView that needs to react to single and double click events. The actions are different depending on whether it was single clicked or double

Answer 1

Using PySide which is the Python binding of Qt 4.8 I saw that single clicks deliver a QEvent.MouseButtonPress event and double clicks deliver a single QEvent.MouseButtonPress event closely followed by a QEvent.MouseButtonDblClick. The delay is approximately about 100ms on Windows. That means you still have a problem if you need to differentiate between single and double clicks.

The solution needs another QTimer with a slightly higher delay than the inbuilt delay (adding some overhead). If you observe a QEvent.MouseButtonPress event you start your own timer, in case of timeout it is a single click. In case of a QEvent.MouseButtonDblClick it is a double click and you stop the timer to avoid counting as single click.