gtk/gtk.go
func (v *TreeModel) IterNthChild(iter *TreeIter, parent *TreeIter, n int) bool {
	c := C.gtk_tree_model_iter_nth_child(v.native(), iter.native(), parent.native(), C.gint(n))
	return gobool(c)
}
func (v *TreeModel) IterNthChild(iter *TreeIter, parent *TreeIter, n int) bool {
	c := C.gtk_tree_model_iter_nth_child(v.native(), iter.native(), parent.native(), C.gint(n))
	return gobool(c)
}
// IterNthChild is a wrapper around gtk_tree_model_iter_nth_child().