程式實現效果：

  
 using UnityEngine.EventSystems;

  void Update()
    {
        //滑鼠按下的時候認為是退出狀態
        if (Input.GetKey(KeyCode.Mouse0) || Input.GetKey(KeyCode.Mouse1))
        {
            //除了leftAlt鍵盤之外
            if (Input.GetKey(KeyCode.LeftControl))
            {
                return;
            }
            mouse_Hover_Exit(null);
        }
    }

    void Start()
    {
        WindowCtrl_Click();
    }


    private void WindowCtrl_Click()
    {
        //新增滑鼠懸浮事件
        EventTrigger trigger = GetComponent();
        if (null == trigger)
        {
            trigger = gameObject.AddComponent();
        }
        //滑鼠懸停進入
        EventTrigger.Entry hoverOnEntry = new EventTrigger.Entry();
        //如果時滑鼠懸浮進入
        hoverOnEntry.eventID = EventTriggerType.PointerEnter;
        hoverOnEntry.callback.AddListener((data) => { mouse_Hover_On((PointerEventData)data); });
        trigger.triggers.Add(hoverOnEntry);

        //滑鼠懸浮退出
        EventTrigger.Entry hoverExitentry = new EventTrigger.Entry();
        //如果時滑鼠懸浮退出
        hoverExitentry.eventID = EventTriggerType.PointerExit;
        hoverExitentry.callback.AddListener((data) => { mouse_Hover_Exit((PointerEventData)data); });
        trigger.triggers.Add(hoverExitentry);

        //滑鼠懸浮退出
        EventTrigger.Entry pressEntry = new EventTrigger.Entry();
        //如果時滑鼠懸浮進入
        pressEntry.eventID = EventTriggerType.PointerDown;
        pressEntry.callback.AddListener(delegate { mouse_Press_Down(); });
        trigger.triggers.Add(pressEntry);
    }

    private void mouse_Press_Down()
    {

    }

    /// 
    /// 滑鼠懸停退出
    /// 
    /// 
    private void mouse_Hover_Exit(PointerEventData data)
    {
        this.gameObject.GetComponent().DOPlayBackwards();
        this.gameObject.GetComponent().UpdateParam(false);
    }

    /// 
    /// 滑鼠懸停進入
    /// 
    /// 
    private void mouse_Hover_On(PointerEventData data)
    {
        this.gameObject.GetComponent().DOPlayForward();
        this.gameObject.GetComponent().UpdateParam(true);
    }

解釋一下： 本人寫的是當滑鼠懸停在該物體上時正序播放動畫，離開時則倒序播放。可以根據需求修改mouse_Hover_Exit，mouse_Hover_On，mouse_Press_Down方法即可。