[gtkmm] RadioMenuItem - set active

["Greg & Erica WOLSKI" <gewolski msn com>]

Hi there,
How do I set active one of the RadioMenuItem group member?

This is my code:

 {
   Gtk::Menu::MenuList& menulist = m_Menu_Options.items();
   Gtk::RadioMenuItem::Group m_group;

   menulist.push_back( Gtk::Menu_Helpers::RadioMenuElem(m_group, 
"Lesson_1",
    SigC::slot(*this, &ExampleWindow::on_menu_option1) ) );
   menulist.push_back( Gtk::Menu_Helpers::RadioMenuElem(m_group, 
"Lesson_2",
    SigC::slot(*this, &ExampleWindow::on_menu_option1) ) );
   menulist.push_back( Gtk::Menu_Helpers::RadioMenuElem(m_group, 
"Lesson_3",
    SigC::slot(*this, &ExampleWindow::on_menu_option1) ) );
 }

Thanks,
Greg

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