Looks up a type by name, using the virtual function that #GtkBuilder has for that purpose. This is mainly used when implementing the #GtkBuildable interface on a type.
type name to lookup
Return: the #GType found for @type_name or #G_TYPE_INVALID if no type was found
2.12
See Implementation
Looks up a type by name, using the virtual function that #GtkBuilder has for that purpose. This is mainly used when implementing the #GtkBuildable interface on a type.