Event.command

Is Command/Windows key held down? (Read Only)

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

JavaScripts

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

using UnityEngine;
using System.Collections;

public class example : MonoBehaviour {
void OnGUI() {
Event e = Event.current;
if (e.command)
if (Application.platform == RuntimePlatform.OSXEditor)
Debug.Log("Command key was pressed");
else
if (Application.platform == RuntimePlatform.WindowsEditor)
Debug.Log("Windows Key was pressed!");

}
}

import UnityEngine
import System.Collections

class example(MonoBehaviour):

def OnGUI():
e as Event = Event.current
if e.command:
if Application.platform == RuntimePlatform.OSXEditor:
Debug.Log('Command key was pressed')
elif Application.platform == RuntimePlatform.WindowsEditor:
Debug.Log('Windows Key was pressed!')