gtk3x: Replace gtk_container_add() calls
gtk_box_append() calls added are not casting GTK_BOX() parameters correctly. The backward compatibility macro does casting it needs, so this does not come up with current builds. It affects builds against gtk-3.98.4+
Reply To cazfi
gtk_box_append() calls added are not casting GTK_BOX() parameters correctly. The backward compatibility macro does casting it needs, so this does not come up with current builds. It affects builds against gtk-3.98.4+
Apparently affected calls are not really added by this patch, but are in already.
gtk_container_add() is going away in gtk-3.98.4. Replace calls to it in gtk3x-client code with other constructs.