Unity监听判断鼠标点击按钮方式（左键、右键、中键）

Unity监听判断鼠标点击按钮方式（左键、右键、中键），可以通过继承IPointerClickHandler类来实现。
该类在using UnityEngine.EventSystems;命名空间下。

一、 新建Test脚本，复制下方代码。

using UnityEngine;
using UnityEngine.Events;
using UnityEngine.EventSystems;

public class Test : MonoBehaviour, IPointerClickHandler
{
    
    
    public UnityEvent leftClick;
    public UnityEvent middleClick;
    public UnityEvent rightClick;
    private void Start()
    {
    
    
        leftClick.AddListener(new UnityAction(ButtonLeftClick));
        rightClick.AddListener(new UnityAction(ButtonRightClick));
        middleClick.AddListener(new UnityAction(ButtonMiddleClick));
    }

    public void OnPointerClick(PointerEventData eventData)
    {
    
    
        if (eventData.button == PointerEventData.InputButton.Left)
            leftClick.Invoke();
        else if (eventData.button == PointerEventData.InputButton.Right)
            rightClick.Invoke();
        else if (eventData.button == PointerEventData.InputButton.Middle)
            middleClick.Invoke();
    }

    private void ButtonLeftClick()
    {
    
    
        Debug.LogError("Left Click");
    }
    private void ButtonRightClick()
    {
    
    
        Debug.LogError("Right Click");
    }
    private void ButtonMiddleClick()
    {
    
    
        Debug.LogError("Middle Click");
    }
}

二、在场景中添加一个按钮，添加Test脚本，不需要绑定事件，点击运行。