// Draws 2 overlapped windows and when clicked on 1 window's button
    // Brings the window to the back.
    
    private var windowRect : Rect = Rect (20, 20, 120, 50);
    private var windowRect2 : Rect = Rect (80, 20, 120, 50);
    
    function OnGUI () {
        windowRect = GUI.Window (0, windowRect, DoMyFirstWindow, "First");
        windowRect2 = GUI.Window (1, windowRect2, DoMySecondWindow, "Second" );
    }
    
    function DoMyFirstWindow (windowID : int) {
        if (GUI.Button (Rect (10,20,100,20), "Put Back"))
            GUI.BringWindowToBack(0);
        GUI.DragWindow(Rect (0,0, 10000, 20));
    }
    
    function DoMySecondWindow (windowID : int) {
        if (GUI.Button (Rect (10,20,100,20), "Put Back"))
            GUI.BringWindowToBack(1);
        GUI.DragWindow(Rect (0,0, 10000, 20));
    }

using UnityEngine;
using System.Collections;

public class example : MonoBehaviour {
    private Rect windowRect = new Rect(20, 20, 120, 50);
    private Rect windowRect2 = new Rect(80, 20, 120, 50);
    void OnGUI() {
        windowRect = GUI.Window(0, windowRect, DoMyFirstWindow, "First");
        windowRect2 = GUI.Window(1, windowRect2, DoMySecondWindow, "Second");
    }
    void DoMyFirstWindow(int windowID) {
        if (GUI.Button(new Rect(10, 20, 100, 20), "Put Back"))
            GUI.BringWindowToBack(0);
        
        GUI.DragWindow(new Rect(0, 0, 10000, 20));
    }
    void DoMySecondWindow(int windowID) {
        if (GUI.Button(new Rect(10, 20, 100, 20), "Put Back"))
            GUI.BringWindowToBack(1);
        
        GUI.DragWindow(new Rect(0, 0, 10000, 20));
    }
}

import UnityEngine
import System.Collections

class example(MonoBehaviour):

    private windowRect as Rect = Rect(20, 20, 120, 50)

    private windowRect2 as Rect = Rect(80, 20, 120, 50)

    def OnGUI():
        windowRect = GUI.Window(0, windowRect, DoMyFirstWindow, 'First')
        windowRect2 = GUI.Window(1, windowRect2, DoMySecondWindow, 'Second')

    def DoMyFirstWindow(windowID as int):
        if GUI.Button(Rect(10, 20, 100, 20), 'Put Back'):
            GUI.BringWindowToBack(0)
        GUI.DragWindow(Rect(0, 0, 10000, 20))

    def DoMySecondWindow(windowID as int):
        if GUI.Button(Rect(10, 20, 100, 20), 'Put Back'):
            GUI.BringWindowToBack(1)
        GUI.DragWindow(Rect(0, 0, 10000, 20))