It may also be used to forward events to other graphicals. It performs the following steps:

• Bind @event to the receiving event object
• Bind event<-receiver to the argument graphical
• If the recogniser is @default, invoke graphical->event to the argument graphical. Otherwise invoke recogniser->event on the argument recogniser. The latter mechanism is used when a device->event posts an event to its focus and window<-focus_recogniser is not @nil.
• If the event, nor the receiver of the event is freed and the event is accepted and
• The event<-window has no window<-focus and
• The event is a event->is_down event and
• graphical is displayed on event<-window

  invoke `window ->focus: graphical, @nil, @default, <-button`

  See also

  - event-receiver
  - @event
  - graphical->generate_event
  - device->event
  - device->event
  - window->focus