Scrollbare Gui bei größerem Inhalt

#include <GuiConstants.au3>
#include <GuiConstantsEx.au3>

Opt ("GuiOnEventMode",1)

;Gui erstellen mit Kreuz zum schließen
    Global $hGui = GUICreate("Test Gui",300,300)
        GUISetOnEvent($GUI_EVENT_CLOSE, "_Exit")

    GUICtrlCreateButton ("Button",20,20,260)
    GUICtrlCreateButton ("Button",20,50,260)
    GUICtrlCreateButton ("Button",20,80,260)
    GUICtrlCreateButton ("Button",20,110,260)
    GUICtrlCreateButton ("Button",20,140,260)
    GUICtrlCreateButton ("Button",20,170,260)
    GUICtrlCreateButton ("Button",20,200,260)
    GUICtrlCreateButton ("Button",20,230,260)
    GUICtrlCreateButton ("Button",20,260,260)
    GUICtrlCreateButton ("Button",20,290,260)
    GUICtrlCreateButton ("Button",20,320,260)
    GUICtrlCreateButton ("Button",20,350,260)

GUISetState (@SW_SHOW)

While 1
    Sleep(100)
WEnd

;Exit
    Func _Exit()
        Exit
    EndFunc

#include <GuiConstants.au3>
#include <GuiConstantsEx.au3>
#include <GUIScrollbars_Ex.au3>

Opt("GuiOnEventMode", 1)

$iButton = InputBox("Buttons", "Anzahl der Buttons eintippen.")

Global $hGui = GUICreate("Test Gui", 300, 300)
GUISetOnEvent($GUI_EVENT_CLOSE, "_Exit")

For $i = 0 To $iButton Step 1
    GUICtrlCreateButton("Button " & $i, 100, 10 + $i * 30, 100)
Next

$scrollhigh = $i * 30

;_GUIScrollbars_Generate -> Erstellt Scrollbar in Gui
;(Breite = 100 (also deaktiviert da Gui 300 breit ist,
;Höhe = berechnet nach Anzahl der Buttons die untereinandergereiht sind.)
_GUIScrollbars_Generate($hGui, 100, $scrollhigh)

GUISetState(@SW_SHOW)

While 1
    Sleep(100)
WEnd

Func _Exit()
    Exit
EndFunc