On Thu, 2011-10-06 at 11:23 -0400, José Alburquerque wrote: > On Wed, 2011-10-05 at 17:31 +0200, Markus Elfring wrote: > > > Obviously C++'s bool type can't represent 3 values. You would need > > > something else, I suppose. > > > > Would it make sense to convert a class like boost::logic::tribool into a > > gtkmm > > component? > > http://www.boost.org/doc/libs/1_47_0/doc/html/tribool/tutorial.html > > If you're interested, glibmm has the Glib::Variant<> classes that I > think do allow the embedding of NULL elements.
This reply has nothing to do with the original question. It's probably more related to the data structure related questions in your other threads, though the variant classes may not be at all useful for database uses. > > > > > Regards, > > Markus > > _______________________________________________ > > gtkmm-list mailing list > > [email protected] > > http://mail.gnome.org/mailman/listinfo/gtkmm-list > -- José _______________________________________________ gtkmm-list mailing list [email protected] http://mail.gnome.org/mailman/listinfo/gtkmm-list
