gtk/menu.go
func (v *Menu) ReorderChild(child IWidget, position int) {
	C.gtk_menu_reorder_child(v.native(), child.toWidget(), C.gint(position))
}
func (v *Menu) ReorderChild(child IWidget, position int) {
	C.gtk_menu_reorder_child(v.native(), child.toWidget(), C.gint(position))
}
// ReorderChild() is a wrapper around gtk_menu_reorder_child().