Sealed instantiable class
The class of events that indicate a frame has been mapped.
duim-frames
duim-frames
The class of events that indicate a frame has been mapped, that is, displayed on screen. An instance of this class is distributed whenever a frame is mapped.
The following example defines a method that can inform you when an instance of a class of frame you have defined is mapped.
define method handle-event
(frame :: <my-frame>,
event :: <frame-mapped-event>) => ()
notify-user
(format-to-string("Frame %= mapped", frame))
end method handle-event;