add-mouse-function

Names a new function to handle mouse events. If there was already a function mapped to this name, it will be overridden. The namespaces for key and mouse event handlers are separate.

• (send a-wx:keymap add-mouse-function name func) -> void
      name : string
      func : a procedure of two arguments -- a wx:object% object and

  a wx:mouse-event% object -- that returns a boolean

  If func returns #f, the event is handled by the default handler.

  Although a mouse function is invoked because it is mapped to a particular button-down event, func will be called on the entire sequence of button-down, dragging, and button-up events.