I'm implementing a custom container widget which needs to only accept child widgets which derive from GtkWidget (obviously) but also implement a custom Interface called GpanesPanel. I'm not sure how to enforce this rule within my code's API. What type should the container's child_type() method return? GPANES_TYPE_PANEL or GTK_TYPE_WIDGET? Likewise, I'm not sure what type custom insertion methods for my container should accept, GpanesPanel or GtkWidget? It doesn't seem enough to use GPANES_TYPE_PANEL/GpanesPanel because, as it stands, any non-widget class could implement the GpanesPanel interface but would be unusable as a container child. Is there anything I can put in the GpanesPanel interface definition that states that it can only be applied to classes derived from GtkWidget? I hope I've explained my problem clearly enough. Suggestions gratefully received. Matt. _______________________________________________ gtk-list mailing list gtk-list@xxxxxxxxx http://mail.gnome.org/mailman/listinfo/gtk-list
