Version: 2019.4
public static bool GetMouseButton (int button);



button values are 0 for left button, 1 for right button, 2 for the middle button. The return is true when the mouse button is pressed down, and false when released.

using UnityEngine;
using System.Collections;

// Detects clicks from the mouse and prints a message // depending on the click detected.

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."); } } }