mousewheel + gtkoptionmenu

[jacob berkman <jacob ximian com>]

i just noticed that scrolling the mouse wheel on a gtkoptionmenu scrolls
through the menu there.

however, it doesn't activate the menu items as they get selected.  i
haven't found very many apps which correctly handle this.

should gtkoptionmenu be "fixed" to activate the menu item as it scrolls,
or should bugs be filed against almost every gtk 2 app?

[ gtk 1 didn't have the scroll behaviour ]

 - jacob