protected override void Start()
{
base.Start();
menuText = "菜单（未命名）";
children = ObservebleValues <IMenu> .ListValue;
if (GetComponent <EventTrigger>() == null)
{
gameObject.AddComponent <EventTrigger>();
}
}
public DropDown(T[] items) : this("", items)
{
itemList = ObservebleValues <T> .ListValue;
itemList.Add(items);
}
