public virtual signal bool button_press_event (EventButton event)
The button_press_event signal will be emitted when a button (typically from a mouse) is pressed.
To receive this signal, the Window associated to the widget needs to enable the BUTTON_PRESS_MASK mask.
This signal will be sent to the grab widget if there is one.
the EventButton which triggered this signal.
true to stop other handlers from being invoked for the event. false to propagate the event further.