(define-gboxed-variant-cstruct event "GdkEvent"
  (type event-type)
  (window (g:object window))
  (send-event (:boolean :int8))
  (:variant type
            ...
            ;; GdkEventPadButton
            ((:pad-button-press :pad-button-release) event-pad-button
             (time :uint32)
             (group :uint)
             (button :uint)
             (mode :uint))
  ... ))  

type

The gdk:event-type of the event, one of the :pad-button-press, :pad-button-release values.

window

The gdk:window object which received the event.

send-event

True if the event was sent explicitly.

time

The time of the event in milliseconds.

group

The pad group the button belongs to. A :tablet-pad device may have one or more groups containing a set of buttons/rings/strips each.

button

The pad button that was pressed.

mode

The current mode of group. Different groups in a :tablet-pad device may have different current modes.