How do I add a listener to OnPointerEnter (uGui)?

Questions & Answers
1

This works fine:

gameObject.GetComponent<UnityEngine.UI.Button>().onClick.AddListener(OnClick);

But this doesn’t:

gameObject.GetComponent<UnityEngine.EventSystems.EventTrigger>().OnPointerEnter.AddListener(OnHoverEnter);

It gives: error CS0119: Expression denotes a method group', where a variable’, value' or type’ was expected

It works fine if I add the listener in the inspector, but if it’s in a prefab that I’m loading at runtime, then unless I’m mistaken I need to add the listener at runtime as well.

2

EventTrigger.OnPointerEnter() is a method so there is no AddListener there.

There appears to be an exposed field on EventTrigger:

 public List<EventTrigger.Entry> delegates

so maybe you just register additional stuff through there.

Entry is defined as:

 [Serializable]
        public class Entry
        {
            public EventTrigger.TriggerEvent callback;
            public EventTriggerType eventID;

            public Entry();
        }

inside the EventTrigger

3

The snippet in the following post works: