Just a tiny one for someone who's very bored someday. :-) Couldn't see a libgnomedbmm category so hope this is close enough, and it actually describes gtkmm anyway.

At the libgnomedbmm docs here:
http://www.gtkmm.org/docs/libgnomedbmm-3.0/docs/tutorial/html/ch03.html

We have an intro to the associated gtkmm, which lifts from its docs thusly:

> To obtain a gtkmm instance from a C GObject instance, use the Glib::wrap() function. For instance:
>
> GtkButton* cbutton = get_a_button();
> GtkButton* button = Glib::wrap(cbutton);

The last line, as in the tutorial this quote originated from -
https://developer.gnome.org/gtkmm-tutorial/stable/sec-basics-gobj-and-wrap.html.en - should read:

    Gtk::Button* button = Glib::wrap(cbutton);

HTH!