Unity3D NGUI 二 NGUI Button怎样接受用户点击并调用函数,具体方法名称是什么

using UnityEngine;
using System.Collections;

public class BtnNUGUI : MonoBehaviour {


    void Awake()
    {
        GameObject button = GameObject.Find("UI Root (2D)/Camera/Anchor/Panel/Button");
        UIEventListener.Get(button).onClick = ButtonClick;
    }

    void ButtonClick(GameObject button)
    {
        Debug.Log("NGUI button name :"+button.name);
    }
    // Use this for initialization
    void Start () {
    
    }
    
    // Update is called once per frame
    void Update () {
    
    }
}