Version: 2017.2
public void OnPointerDown (EventSystems.PointerEventData eventData);


eventData The EventData usually sent by the EventSystem.


Evaluate current state and transition to pressed state.

using UnityEngine;
using System.Collections;
using UnityEngine.UI;
using UnityEngine.EventSystems;// Required when using Event data.

public class ExampleClass : MonoBehaviour, IPointerDownHandler// required interface when using the OnPointerDown method. { //Do this when the mouse is clicked over the selectable object this script is attached to. public void OnPointerDown(PointerEventData eventData) { Debug.Log( + " Was Clicked."); } }