[Solved] A way for OnClick to ignore children?

I have a button with a child element that shouldn't be clickable, but its RectTransform seems to trigger OnClick and PointerEnter on the parent button. Is there a way to disable this behaviour?

 

Replace GetComponents with appropriate variables for fun and profit, but this should do it.

Code (csharp):

1.  
2. using UnityEngine;
3. using System.Collections;
4. using UnityEngine.UI;
5.  
6. public class UnregisterGraphicFromRaycasting : MonoBehaviour {
7.  
8.     void OnEnable(){
9.         GraphicRegistry.UnregisterGraphicForCanvas(GetComponent<Canvas>(),GetComponent<Graphic>());
10.     }
11. }
12.  

 

Thanks, it works nicely! I added it to Start() instead because OnEnable doesn't seem to work for instantiated objects, and added a search for the canvas from the demo DragMe script.

In case anyone else needs this:

Code (csharp):

1.  
2. using UnityEngine;
3. using System.Collections;
4. using UnityEngine.UI;
5.  
6.  
7. [RequireComponent(typeof(Graphic))]
8. public class UnregisterGraphicFromRaycasting : MonoBehaviour {
9.  
10.     void Start(){
11.  
12.         Canvas canvas = FindInParents<Canvas>(gameObject); //searching in parents because there can be multiple canvases
13.  
14.         GraphicRegistry.UnregisterGraphicForCanvas(canvas, GetComponent<Graphic>());
15.     }
16.  
17.     static public T FindInParents<T>(GameObject go) where T : Component
18.     {
19.         if (go == null) return null;
20.         T comp = go.GetComponent<T>();
21.      
22.         if (comp != null)
23.             return comp;
24.      
25.         Transform t = go.transform.parent;
26.         while (t != null && comp == null)
27.         {
28.             comp = t.gameObject.GetComponent<T>();
29.             t = t.parent;
30.         }
31.         return comp;
32.     }
33. }
34.  

 

The other way, as I was looking for something else and loaded up the example project! :

Code (csharp):

1.  
2. using UnityEngine;
3. using UnityEngine.UI;
4. using System.Collections;
5.  
6. public class IgnoreRaycast : MonoBehaviour, ICanvasRaycastFilter
7. {
8.     public bool IsRaycastLocationValid(Vector2 sp, Camera eventCamera)
9.     {
10.         return false;
11.     }
12. }
13.  

 

this might be old, but in case anyone wondering, un-check 'Raycast Target' component of child in inspector will solve this problem.