on-subwindow-event in window<%>
Called when this window or a child window receives a mouse event.
The
on-subwindow-event method of the receiver's top-level window is called first (see
get-top-level-window); if the return value is #f, the
on-subwindow-event method is called for the next child in the path to the receiver, and
so on. Finally, if the receiver's
on-subwindow-event method returns #f, the event is passed on to the
receiver's normal mouse-handling mechanism.
( -> boolean
send a-window on-subwindow-event receiver event)
receiver : window<%> object
event : mouse-event% object
The event argument is the event that was generated for the
receiver window. Returns #f.