1.67.1 Refining graphicals

A couple of methods are commonly redefined on class graphical for creating customised graphical objects:

• graphical->event: event May be redefined to modify event processing. This is a class-level alternative for graphical->recogniser.
• graphical->device: device Called if the device of the graphical object is changed. May be redefined to take care of side-effects, but the user must call the super-behaviour.
• graphical->displayed: bool Called if the graphical<-displayed attribute is changed. Like graphical->device, this method may be redefined, but the user
• must* call the super-behaviour.
• graphical->reparent: int Indicates that the consists-of tree of graphicals has changed between this graphical and the window. May be redefined, but the user must call the super-behaviour.

  See also

  - class gesture
  - class handle
  - class dialog_item
  - class window
  - class device
  - object->recogniser
  - class area