mouse-popup-menubar
mouse-popup-menubar is an interactive compiled Lisp function in `mouse.el
'.
(mouse-popup-menubar EVENT PREFIX)
This function is obsolete since 23.1;
use `mouse-menu-bar-map' instead.
Pop up a menu equivalent to the menu bar for keyboard EVENT with PREFIX.
The contents are the items that would be in the menu bar whether or
not it is actually displayed.