Question

JavaScript => public static function GetMouseButtonDown(button: int): bool;
C# => public static bool GetMouseButtonDown(int button);

Description 描述

Returns true during the frame the user pressed the given mouse button.

在用户按下指定鼠标按键的那一帧返回true。

You need to call this function from the Update function, since the state gets reset each frame. It will not return true until the user has released the mouse button and pressed it again. button values are 0 for left button, 1 for right button, 2 for the middle button.

你需要在Update方法中调用这个方法，此后每一帧重置状态时，它将不会返回true除非用户释放这个鼠标按钮然后重新按下它。按钮值设定为 0对应左键 ， 1对应右键 ， 2对应中键。

JavaScript:

	// Detects clicks from the mouse and prints a message
	// depending on the click detected.
 
	function Update() {
		if(Input.GetMouseButtonDown(0))
			Debug.Log("Pressed left click.");
		if(Input.GetMouseButtonDown(1))
			Debug.Log("Pressed right click.");
		if(Input.GetMouseButtonDown(2))
			Debug.Log("Pressed middle click.");
	}

C#:

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

Input