Activate Gtk::RadioButton from another Window Menu.

[Guillaume Ansel <guillaume ansel gmail com>]

Hello,
I have a small issue with Gtk::RadioButton. I have a Gtk::Window with 
several Gtk::RadioButton.
Each one activate a tool function, it looks like the Toolbox from Gimp.
I would want to activate theses tools function from a menu of my Viewing 
Window,
so I created a menu Tools which contains as many entries as tools in my 
toolbox.
I manage to activate the required function from the menu, but i want the 
RadioButton
associated to this function to be pressed at the same time, but i could 
not do it. :(

For now, I connected the tool function of my Toolbox with my MenuElem, 
something like that :

menuList.pushBack(Gtk::Menu_Helpers::MenuElem(
                  "_Delete",
                  Gtk::AccelKey(...//whatever),
                  sigc::mem_fun(myToolBoxWindow, 
&ToolBoxWindow::myfunction)));

This way, the function is activated, but the button isn't pressed. I 
want to same behavior as
Gimp toolbox when you select a tool from the drawing window, but i have 
no idea how to do it. :(
I need your help. :)
Thank you.