Dynamic menus on base widget using MBAR

[Ricardo Fonseca <zamb(at)physics.ucla.edu>]

Hi All

Is there a way to dynamically change the menu on a base widget? When I begin
my program I create a menu using the MBAR keyword on the WIDGET_BASE
function. While it is running, and depending on user input, I'd like to
change the menu to a completely different one.

So far I've attempted to destroy the old button widgets and regenerating the
menu, but it's not working.

Any Ideas?

Thanks in advance, Ricardo