UI Button: Detecting right mouse button

Unity Engine
1

I currently use a script that claims to emulate the normal UI Button’s Onclick functionality, but only detects right mouse button clicks. I can add Listeners to it as usual and it does indeed only detect RMB clicks. Problem is, it for some reason always calls ALL Listeners on ALL the Right Button Event scripts in the scene.

So my question is (since there seem to be several solutions by users, but no official ones): How can I make UI buttons detect RMB clicks like the UI Button class does with all MB clicks (meaning the options to call functions with a parameter)?

Here is the script I use currently, by the way.

using UnityEngine;
using UnityEngine.UI;
using UnityEngine.EventSystems;
using UnityEngine.Events;
using System.Collections;
[ExecuteInEditMode]
[AddComponentMenu("Event/RightButtonEvent")]
public class RightButtonEvent: MonoBehaviour, IPointerEnterHandler, IPointerExitHandler {
     [System.Serializable]public class RightButton:UnityEvent{}
     public RightButton onRightDown;
     public RightButton onRightUp;
     private bool isOver = false;
     void Start(){
     }
     void Update(){
          if(Input.GetMouseButtonDown(1)){
               onRightDown.Invoke();
          }
          if(Input.GetMouseButtonUp(1)){
               onRightUp.Invoke();
          }
     }
     public void OnPointerEnter(PointerEventData eventData){
          isOver =true;
     }
     public void OnPointerExit(PointerEventData eventData){
          isOver =false;
     }
}

And for testing purposes, I added a Listener via script that calls a function:

public RightButtonEvent rightButtonEvent;
void Start(){
     rightButtonEvent.onRightDown.AddListener(delegate{Test();});
}
public void Test(){
     Debug.Log("blubb");
}

Which, as described above, call ALL RightButtonEvent listeners in the scene.

2

bump :frowning:

3

The regular IPointerClickHandler can deal with right clicks.

4

Thanks, I found this thread before: Can the UI buttons detect a right mouse-click? - Unity Engine - Unity Discussions

and I tried this script:

using UnityEngine;
using UnityEngine.UI;
using UnityEngine.EventSystems;

public class ClickableObject : MonoBehaviour, IPointerClickHandler {

    public void OnPointerClick(PointerEventData eventData)
    {
        if (eventData.button == PointerEventData.InputButton.Left)
            Debug.Log("Left click");
        else if (eventData.button == PointerEventData.InputButton.Middle)
            Debug.Log("Middle click");
        else if (eventData.button == PointerEventData.InputButton.Right)
            Debug.Log("Right click");
    }
}

It works as intended, but I assume that this script would need to be copied and customized for every function I want to call, right? Seems counter-intuitive since the default Button works with the handy Listener system.

BTW, this is the RightButtonEvent I have been using; the one that calls ALL buttons in the scene.

using UnityEngine;
using UnityEngine.UI;
using UnityEngine.EventSystems;
using UnityEngine.Events;
using System.Collections;
[ExecuteInEditMode]
[AddComponentMenu("Event/RightButtonEvent")]
public class RightButtonEvent : MonoBehaviour, IPointerEnterHandler, IPointerExitHandler {
    [System.Serializable]public class RightButton : UnityEvent{}
    public RightButton onRightDown;
    public RightButton onRightUp;
    private bool isOver = false;
    void Start () {
    }
  
    void Update () {
        if (Input.GetMouseButtonDown(1)) {
            onRightDown.Invoke();
        }
        if (Input.GetMouseButtonUp(1)) {
            onRightUp.Invoke();
        }
    }
  
    public void OnPointerEnter(PointerEventData eventData) {
        isOver = true;
    }
  
    public void OnPointerExit(PointerEventData eventData) {
        isOver = false;
    }
}
5

This is how I would do it. Pretty similar to the way a button works.

using UnityEngine;
using UnityEngine.EventSystems;
using UnityEngine.Events;
 
public class RightClick : MonoBehaviour, IPointerClickHandler {
 
    public UnityEvent leftClick;
    public UnityEvent middleClick;
    public UnityEvent rightClick;
 
    public void OnPointerClick(PointerEventData eventData)
    {
        if (eventData.button == PointerEventData.InputButton.Left)
            leftClick.Invoke ();
        else if (eventData.button == PointerEventData.InputButton.Middle)
            middleClick.Invoke ();
        else if (eventData.button == PointerEventData.InputButton.Right)
            rightClick.Invoke ();
     }
}
7 Likes
6

Thank you, that did the trick.

7

This seems to be the easiest way.

8

Please don’t necro posts.