Search Unity

  1. Megacity Metro Demo now available. Download now.
    Dismiss Notice

Can the UI buttons detect a right mouse-click?

Discussion in 'UGUI & TextMesh Pro' started by Zerodev, Nov 9, 2014.

  1. Zerodev

    Zerodev

    Joined:
    Oct 20, 2014
    Posts:
    2
    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.  
     
    PolygonPros and tigerleapgorge like this.
  2. jfarias

    jfarias

    Joined:
    Apr 8, 2014
    Posts:
    53
    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.
     
    ujz, Westland, GuirieSanchez and 21 others like this.
  3. Zerodev

    Zerodev

    Joined:
    Oct 20, 2014
    Posts:
    2
    This works beautifully, thanks!
     
    fullcorder likes this.
  4. redthrawn

    redthrawn

    Joined:
    May 8, 2013
    Posts:
    27
    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.  
     
    ChillyRolande, hms0589 and grimmgames like this.
  5. braur

    braur

    Joined:
    Jan 7, 2018
    Posts:
    7
    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.  
     
    zelderus, ega881124, Snake-M3 and 5 others like this.
  6. zoskeb

    zoskeb

    Joined:
    Feb 28, 2018
    Posts:
    1
    Thank you so much!!!!!
     
  7. Reedex

    Reedex

    Joined:
    Sep 20, 2016
    Posts:
    389
  8. unity_sTKXHclFXh5sEA

    unity_sTKXHclFXh5sEA

    Joined:
    Nov 23, 2017
    Posts:
    3
    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. }
     
    Green11001 likes this.
  9. invisage

    invisage

    Joined:
    Jun 27, 2019
    Posts:
    23
    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. }
     
  10. infinitypbr

    infinitypbr

    Joined:
    Nov 28, 2012
    Posts:
    3,149
    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. :)
     
    Last edited: Dec 7, 2021
    Westland likes this.
  11. trullilulli

    trullilulli

    Joined:
    Sep 4, 2013
    Posts:
    7
    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
     
    Last edited: Jul 28, 2023
    spilat12 likes this.
  12. LeraEclera

    LeraEclera

    Joined:
    Feb 12, 2023
    Posts:
    5
    I am use that

    Code (CSharp):
    1. using UnityEngine;
    2. using UnityEngine.EventSystems;
    3.  
    4. public class RightClickButton : MonoBehaviour, IPointerDownHandler
    5. {
    6.     public void OnPointerDown(PointerEventData eventData)
    7.     {
    8.         if (eventData.button == PointerEventData.InputButton.Right)
    9.         {
    10.             DoSomething();
    11.         }
    12.     }
    13. }