> The description of the GVariantType has a little more explanation: > http://developer.gnome.org/glib/stable/glib-GVariantType.html#glib-GVariantType.description
Thanks for this link. - I'm sorry that I did not find the following paragraph earlier. The first major change with respect to the D-Bus type system is the introduction of maybe (or "nullable") types. Any type in GVariant can be converted to a maybe type, in which case, "nothing" (or "null") becomes a valid value. Maybe types have been added by introducing the character "m" to type strings. By which (member) function can such a variable be marked to contain an unknown value? (Do I overlook a programming interface once more?) http://developer.gnome.org/glibmm/2.30/classGlib_1_1VariantBase.html Regards, Markus _______________________________________________ gtkmm-list mailing list [email protected] http://mail.gnome.org/mailman/listinfo/gtkmm-list
