// The position on of the scrolling viewport
var scrollPosition : Vector2 = Vector2.zero;

function OnGUI () {
    // An absolute-positioned example: We make a scrollview that has a really large client
    // rect and put it in a small rect on the screen.
    scrollPosition = GUI.BeginScrollView (Rect (10,300,100,100),
        scrollPosition, Rect (0, 0, 220, 200));
    
    // Make four buttons - one in each corner. The coordinate system is defined
    // by the last parameter to BeginScrollView.
    GUI.Button (Rect (0,0,100,20), "Top-left");
    GUI.Button (Rect (120,0,100,20), "Top-right");
    GUI.Button (Rect (0,180,100,20), "Bottom-left");
    GUI.Button (Rect (120,180,100,20), "Bottom-right");
    
    // End the scroll view that we began above.
    GUI.EndScrollView ();
}

using UnityEngine;
using System.Collections;

public class example : MonoBehaviour {
    public Vector2 scrollPosition = Vector2.zero;
    void OnGUI() {
        scrollPosition = GUI.BeginScrollView(new Rect(10, 300, 100, 100), scrollPosition, new Rect(0, 0, 220, 200));
        GUI.Button(new Rect(0, 0, 100, 20), "Top-left");
        GUI.Button(new Rect(120, 0, 100, 20), "Top-right");
        GUI.Button(new Rect(0, 180, 100, 20), "Bottom-left");
        GUI.Button(new Rect(120, 180, 100, 20), "Bottom-right");
        GUI.EndScrollView();
    }
}

import UnityEngine
import System.Collections

class example(MonoBehaviour):

    public scrollPosition as Vector2 = Vector2.zero

    def OnGUI():
        scrollPosition = GUI.BeginScrollView(Rect(10, 300, 100, 100), scrollPosition, Rect(0, 0, 220, 200))
        GUI.Button(Rect(0, 0, 100, 20), 'Top-left')
        GUI.Button(Rect(120, 0, 100, 20), 'Top-right')
        GUI.Button(Rect(0, 180, 100, 20), 'Bottom-left')
        GUI.Button(Rect(120, 180, 100, 20), 'Bottom-right')
        GUI.EndScrollView()