Can the UI buttons detect a right mouse-click?

I'm instantiating buttons and adding listeners to detect when they're clicked. But I've noticed that this method only seems to detect a button-click if it came from the left-mouse button. The button doesn't register a right-mouse click.

Is there a way to make the button react to a right-click? Perhaps even run a different script than it does with a left-click?

Code (csharp):

1.  
2. public GameObject selector_ButtonPrefab;
3.  
4. void CreatePrefabButton()
5. {
6. GameObject newButton = Instantiate(selector_ButtonPrefab) as GameObject;
7. newButton.GetComponent<Button>().onClick.AddListener(delegate {TestScript();});
8. }
9.  
10. void TestScript()
11. {
12. Debug.Log("See me if you left-click, but not if you right-click.");
13. }
14.  

 

Instead of using the AddListener, create a script and add it to your prefab button with something like:

Code (CSharp):

1. using UnityEngine;
2. using UnityEngine.UI;
3. using UnityEngine.EventSystems;
4.  
5. public class ClickableObject : MonoBehaviour, IPointerClickHandler {
6.  
7.     public void OnPointerClick(PointerEventData eventData)
8.     {
9.         if (eventData.button == PointerEventData.InputButton.Left)
10.             Debug.Log("Left click");
11.         else if (eventData.button == PointerEventData.InputButton.Middle)
12.             Debug.Log("Middle click");
13.         else if (eventData.button == PointerEventData.InputButton.Right)
14.             Debug.Log("Right click");
15.     }
16. }

This works on any object, not just buttons.
Hope it helps.

 

This works beautifully, thanks!

 

Or, just go:

Code (CSharp):

1.  
2. if (eventData.pointerId == -1)
3.     Debug.Log("Left click");
4. else if (eventData.pointerId == -3)
5.     Debug.Log("Middle click");
6. else if (eventData.pointerId == -2)
7.     Debug.Log("Right click");
8.  

 

Hi, if you want to extend this example of some handy events that could be used to easy assign delegates in the inspector, you could go as follows

Code (CSharp):

1. using UnityEngine;
2. using UnityEngine.UI;
3. using UnityEngine.EventSystems;
4. using UnityEngine.Events;
5. public class GUIClickController : MonoBehaviour, IPointerClickHandler
6.     {
7.         public UnityEvent onLeft;
8.         public UnityEvent onRight;
9.         public UnityEvent onMiddle;
10.  
11.         public void OnPointerClick(PointerEventData eventData)
12.         {
13.             if (eventData.button == PointerEventData.InputButton.Left)
14.             {
15.                 onLeft.Invoke();
16.             }
17.             else if (eventData.button == PointerEventData.InputButton.Right)
18.             {
19.                 onRight.Invoke();
20.             }
21.             else if (eventData.button == PointerEventData.InputButton.Middle)
22.             {
23.                 onMiddle.Invoke();
24.             }
25.         }
26.     }
27.  

 

Thank you so much!!!!!

 

just a quick question,. if i have button with event.pressed.right , and it does something, how to make it does the thing while the button being pressed, and stop doing with release,?

 

What if we bind the action using the AddListener() function ?

Code (CSharp):

1. Button btn = GetComponent<Button>();
2. btn.onClick.AddListener(() => {
3. if (Input.GetMouseButtonDown(1)) {
4. // this is never reached when right mouse button is clicked !!
5. }
6. }

 

Another similar way with eventData, but a little easier to read, for those looking into it:

Code (CSharp):

1. public void OnPointerClick(PointerEventData eventData)
2. {
3.     if (eventData.button == PointerEventData.InputButton.Left)
4.           DoSomething();
5. }

 

This has now helped me TWICE...the first time, and this time, when I totally forgot about how to do it all. I had forgotten to implement IPointerClickHandler.

 

This is a bit of a necropost, however i've figured a solution which is better and easier for me. My game already utilises the built in unity Button object but I just needed to add a right click to it.

Code (CSharp):

1. using UnityEngine.EventSystems;
2. using UnityEngine.UI;
3.  
4. /// <summary>
5. /// This is a custom button class that inherits from the default button. This allows us to have seperate events for left and right click, utilising all of the handy features of Button.
6. /// </summary>
7. public class UIButton : Button
8. {
9.     public UnityEngine.Events.UnityEvent onRightClick = new UnityEngine.Events.UnityEvent();
10.     public override void OnPointerClick(PointerEventData eventData)
11.     {
12.         if (eventData.button == PointerEventData.InputButton.Left)
13.         {
14.             // Invoke the left click event
15.             base.OnPointerClick(eventData);
16.         }
17.         else if (eventData.button == PointerEventData.InputButton.Right)
18.         {
19.             // Invoke the right click event
20.             onRightClick.Invoke();
21.         }
22.     }
23. }
24.  

now wherever you have "Button" just replace it with "UIButton" and you can add a button.OnRightClick.AddEventListener