Robuta

https://lists.gnome.org/archives/gtkmm-list/2003-September/msg00283.html Re: [gtkmm] Re: How to derive from Gtk::Toolbar_Helpers::ToggleElem ?? how to derive gtk toolbar helpers https://lists.gnome.org/archives/gtkmm-list/2003-September/msg00293.html Re[2]: [gtkmm] Re: How to derive from Gtk::Toolbar_Helpers::ToggleElem ? how to