# MButton (filter, event)

A ``menu button'' is usually a member of a Menu. It can be used anywhere, but its behavior will seem weird in almost any other context.

Behavior
  Its child is surrounded by a flat shadow that is recessed whenever the mouse rolls into it. Restores the flat shadow on up-click or chord-abort, and generates an event if the mouse is still within the button on the up-click.
Shape
  The natural shape of its child (i.e., with no shrink or stretch), plus the border around the button.
See Also
  Button