- static Glib::RefPtr<Gtk::Action> register_radio_action (Glib::RefPtr<Gtk::ActionGroup> group, Gtk::RadioAction::Group,
- std::string name, std::string label, sigc::slot<void> sl,
+ static Glib::RefPtr<Gtk::Action> register_radio_action (Glib::RefPtr<Gtk::ActionGroup> group, Gtk::RadioAction::Group&,
+ const char * name, const char * label, sigc::slot<void> sl,