The pad button that was pressed.
the pad group the button belongs to. A gdk.types.InputSource.TabletPad device may have one or more groups containing a set of buttons/rings/strips each.
The current mode of @group. Different groups in a gdk.types.InputSource.TabletPad device may have different current modes.
true if the event was sent explicitly.
the time of the event in milliseconds.
the type of the event (gdk.types.EventType.PadButtonPress or gdk.types.EventType.PadButtonRelease).
the window which received the event.
Generated during gdk.types.InputSource.TabletPad button presses and releases.