Question

JavaScript => public var alt: bool;
C# => public bool alt;

Description 描述

Is Alt/Option key held down? (Read Only)

Alt或Option键按住了么（只读）？

On Windows, this returns true if any Alt key is held down.
On Mac, this returns true if any Option key is held down.

在Windows系统，如果任意Alt键被按下，返回真；
在Mac系统，如果任意Option键被按下，返回真。

JavaScript:

	// Prints Option or Alt key was pressed depending the
	// platform this script is being run.
	function OnGUI() {
		var e : Event = Event.current;
		if (e.alt) {
			if(Application.platform == RuntimePlatform.OSXEditor) {
				Debug.Log("Option key was pressed");
			} else if( Application.platform == RuntimePlatform.WindowsEditor) {
				Debug.Log("Alt Key was pressed!");			
			}
		}
	}

C#:

using UnityEngine;
using System.Collections;
 
public class ExampleClass : MonoBehaviour {
    void OnGUI() {
        Event e = Event.current;
        if (e.alt)
            if (Application.platform == RuntimePlatform.OSXEditor)
                Debug.Log("Option key was pressed");
            else
                if (Application.platform == RuntimePlatform.WindowsEditor)
                    Debug.Log("Alt Key was pressed!");
 
 
    }
}

Event