this.GetComponent<BoxCollider> ().size = new Vector3 (1.5f, 1.5f, 1.5f);

using System.Collections; 
using System.Collections.Generic; 
using UnityEngine; 
public class Shubiaoxuanting : MonoBehaviour{ 
    bool ischanger; //上移動 0為未上移 1為上移 
    int move_up=0; 
    void Start () { ischanger = false; //擴大碰撞體的尺寸 方便檢測鼠標懸停             
       this.GetComponent<BoxCollider> ().size = new Vector3 (1.5f, 1.5f, 1.5f); 
       //給麻將初始狀態(tài)的位置 this.transform.position = new Vector3         
       (this.transform.position.x, 0, this.transform.position.z); } 
        //鼠標在物體上面引起的動作 void OnMouseOver(){ ischanger = true;     
       this.transform.position = new Vector3 (this.transform.position.x, 0.2f, 
      this.transform.position.z); } 
     // void OnMouseEnter(){ 
     // ischanger = true; 
     // move_up = 1; 
     // Debug.Log ("3333333"); 
     // // } 
     //鼠標不再上面引起的動作 
     void OnMouseExit(){ 
        ischanger = false; 
        this.transform.position = new Vector3 (this.transform.position.x, 0, this.transform.position.z); 
    }  /鼠標按下
 
 /鼠標按下 
void OnMouseDown(){  
 }
}
//鼠標松開
//鼠標松開
void OnMousePut(){}
void OnMousePut(){}
void Update () {
// if (ischanger){
    //Debug.Log ("33333");
    //this.transform.position = new Vector3 (this.transform.position.x, 0.2f, this.transform.position.z)
} else {
// this.transform.position = new Vector3 (this.transform.position.x, 0, this.transform.position.z);
// }}}

using UnityEngine; 
using System.Collections; 
using UnityEngine.UI; 
using UnityEngine.EventSystems; 
public class LearnButton : Button 
{ 
    /// 
    /// 配合Unity的其他方法使用，就能達到你想要的效果！這里只是拋磚引玉，大家有更好的方法歡迎跟我交流！ 
    /// 
    /// 
    /// 
    protected override void DoStateTransition(SelectionState state, bool instant) 
    {
 
        base.DoStateTransition(state, instant); 
        switch (state) 
        {
 
            case SelectionState.Disabled: 
                break; 
            case SelectionState.Highlighted: 
                Debug.Log("鼠標移到button上！"); 
                break; 
            case SelectionState.Normal: 
                Debug.Log("鼠標離開Button！"); 
                break; 
            case SelectionState.Pressed: 
                break; 
            default: 
                break; 
        } 
    } 
}