radio_button behavior with toggle_button style ?

[Alain D'EURVEILHER <deurveia esiee fr>]

Hi,

Is it possible to make a group of toggle button, but behavioring as the 
radiobuttons ??

Here it is... : have for example 3 toggle_button and, pressing one down 
release (up) the other ones...

I've tried to make it, but i didn't know how... If sb have some clue on 
that... ;-)

Thx.

-- 

AlaiN.