When this function returns TRUE, the next event will be
returned. When FALSE is returned, Pad.stickyEventsForeach will return.
When event is set to NULL, the item will be removed from the list of sticky events.
event can be replaced by assigning a new reference to it.
This function is responsible for unreffing the old event when
removing or modifying.
Callback used by Pad.stickyEventsForeach.
When this function returns TRUE, the next event will be returned. When FALSE is returned, Pad.stickyEventsForeach will return.
When event is set to NULL, the item will be removed from the list of sticky events. event can be replaced by assigning a new reference to it. This function is responsible for unreffing the old event when removing or modifying.