gtk/combo_box.go
func (v *ComboBox) SetActiveIter(iter *TreeIter) {
	var cIter *C.GtkTreeIter
	if iter != nil {
		cIter = &iter.GtkTreeIter
	}
	C.gtk_combo_box_set_active_iter(v.native(), cIter)
}
func (v *ComboBox) SetActiveIter(iter *TreeIter) {
	var cIter *C.GtkTreeIter
	if iter != nil {
		cIter = &iter.GtkTreeIter
	}
	C.gtk_combo_box_set_active_iter(v.native(), cIter)
}
// SetActiveIter is a wrapper around gtk_combo_box_set_active_iter().