EventTrigger PointerEnter

Hi Guys, I have problem with Pointer Event Trigger - Pointer Enter. I have created from script Text, i want to change text color when I touch it with the mouse. But when I touch it function OnPointerEnter was not called. Only when I click on the text it’s change color…

using UnityEngine;
using UnityEngine.UI;
using UnityEngine.Events;
using UnityEngine.EventSystems;
using System.Collections;
using System.Collections.Generic;

public class ComboBoxText : MonoBehaviour
{
    public GameObject _current;

    public GameObject _go;
    public RectTransform _rt;
    public Text _text;
    public EventTrigger _et;
    public EventTrigger.TriggerEvent _trig;
    public EventTrigger.Entry _entry;

    public ComboBoxText(GameObject _current, Font _font, int _fontSize)
    {

        _go = new GameObject();
        _go.name = "Tested GameObject";
        _go.transform.parent = _current.transform;

        _go.AddComponent<RectTransform>();
        _rt = _go.GetComponent<RectTransform>();
        _rt.anchoredPosition3D = new Vector3(0f, 0f, 0f);
        _rt.pivot = new Vector2(0f, 1f);
        _rt.sizeDelta = new Vector2(130, 30);
        _rt.localPosition = new Vector3(0f, 0f, 0f);
        _rt.localScale = new Vector3(1f, 1f, 1f);
        _rt.anchoredPosition3D = new Vector3(0f, 0f, 0f);
        _rt.pivot = new Vector2(0f, 1f);
        _rt.localScale = new Vector3(1f, 1f, 1f);

        _go.AddComponent<Text>();
        _text = _go.GetComponent<Text>();
        _text.text = "TestText";
        _text.font = _font;
        _text.fontSize = _fontSize;
        _text.color = new Color32(200, 200, 200, 255);
        _text.alignment = TextAnchor.MiddleLeft;

        _et = _go.GetComponent<EventTrigger>();
        if (_et == null) { _et = _go.AddComponent<EventTrigger>(); }
        _trig = new EventTrigger.TriggerEvent();
        _trig.AddListener((data) => OnPointerEnter());
        _entry = new EventTrigger.Entry() { callback = _trig, eventID = EventTriggerType.PointerEnter };
        _et.delegates = new List<EventTrigger.Entry>();
        _et.delegates.Add(_entry);
    }

    public void OnPointerEnter()
    {
        Debug.Log("OnPointerEnter");
        _text.color = new Color32(200, 200, 200, 255);
    }
}

Creating was called from another script:

using UnityEngine;
using UnityEngine.UI;
using UnityEngine.Events;
using UnityEngine.EventSystems;
using System.Collections;
using System.Collections.Generic;

public class UI_ComboBox :
{
    public GameObject _go;
    public Font _font;
    public int _fontSize;

    private RectTransform _rt;
    private ComboBoxText _mainText;    
private uint _CurrentItemNum = 0;

	void Start () {
        _rt =  _go.GetComponent<RectTransform>();

        _mainText = new ComboBoxText(_go, _font, _fontSize);
        _mainText._go.name = _go.name + "_MainText";
        _mainText._rt.sizeDelta = new Vector2(_rt.sizeDelta.x, _rt.sizeDelta.y);
        _mainText._rt.anchoredPosition3D = new Vector3(0f, 0f, 0f);
        _mainText._text.text = " MainText";
	
	}   
}

You need to include the interface reference to your class and also onPointerEnter requires a parameter of PointerEventData.

See http://docs.unity3d.com/ScriptReference/UI.Selectable.OnPointerEnter.html for a simple example.