gtk/gtk.go
func (v *TreeModel) IterChildren(iter, child *TreeIter) bool {
	var cIter, cChild *C.GtkTreeIter
	if iter != nil {
		cIter = iter.native()
	}
	cChild = child.native()
	c := C.gtk_tree_model_iter_children(v.native(), cChild, cIter)
	return gobool(c)
}
func (v *TreeModel) IterChildren(iter, child *TreeIter) bool {
	var cIter, cChild *C.GtkTreeIter
	if iter != nil {
		cIter = iter.native()
	}
	cChild = child.native()
	c := C.gtk_tree_model_iter_children(v.native(), cChild, cIter)
	return gobool(c)
}
// IterChildren is a wrapper around gtk_tree_model_iter_children().