GBoxed event-expose - cl-cffi-gtk3 API documentation

Package: gdk

GBoxed gdk:event-expose

Declaration

(define-gboxed-variant-cstruct event "GdkEvent"
  (type event-type)
  (window (g:object window))
  (send-event (:boolean :int8))
  (:variant type
            ...
            ((:expose) event-expose
             (area rectangle :inline t)
             (region (:pointer (:struct cairo:region-t)))
             (count :int))
  ... ))

Values

type: The gdk:event-type type of the event.
window: The gdk:window object which received the event.
send-event: True if the event was sent explicitly.
area: Bounding gdk:rectangle box of the region.
region: The region of cairo:region-t type that needs to be redrawn.
count: The number of contiguous expose events following this one. The only use for this is "exposure compression", that is handling all contiguous expose events in one go, though GDK performs some exposure compression so this is not normally needed.