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public static bool GetMouseButton (int button);


Returns whether the given mouse button is held down.

button values are 0 for left button, 1 for right button, 2 for the middle button.

using UnityEngine;
using System.Collections;

public class ExampleClass : MonoBehaviour { void Update() { if (Input.GetMouseButton(0)) Debug.Log("Pressed left click."); if (Input.GetMouseButton(1)) Debug.Log("Pressed right click."); if (Input.GetMouseButton(2)) Debug.Log("Pressed middle click."); } }