MonoBehaviour.useGUILayout

Description

Disabling this lets you skip the GUI layout phase.

It can only be used if you do not use GUI.Window and GUILayout inside of this OnGUI call.

#pragma strict
public function Start() {
	//Disabling this lets you skip the GUI layout phase.
	useGUILayout = false;
}

using UnityEngine;
using System.Collections;

public class ExampleClass : MonoBehaviour
{
    public void Start()
    {
        //Disabling this lets you skip the GUI layout phase.
        useGUILayout = false;
    }
}