Event.keyCode
var keyCode: KeyCode;
KeyCode keyCode;
keyCode as KeyCode
Description

The raw key code for keyboard events.

Used in EventType.KeyDown and EventType.KeyUp events; this returns KeyCode value that matches the physical keyboard key. Use this for handling cursor keys, function keys etc.

See Also: Event.character.
	// Detects keys pressed and prints their keycode
	function OnGUI() {
		var e : Event = Event.current;
		if (e.isKey) {
			Debug.Log("Detected key code: " + e.keyCode);
		}
	}
using UnityEngine;
using System.Collections;

public class Example : MonoBehaviour {
    void OnGUI() {
        Event e = Event.current;
        if (e.isKey)
            Debug.Log("Detected key code: " + e.keyCode);
        
    }
}
import UnityEngine
import System.Collections

public class Example(MonoBehaviour):

	def OnGUI() as void:
		e as Event = Event.current
		if e.isKey:
			Debug.Log(('Detected key code: ' + e.keyCode))