Hilfe bei Lautstärke slider

#include <StructureConstants.au3>
#include <ButtonConstants.au3>
#include <EditConstants.au3>
#include <GUIConstantsEx.au3>
#include <SliderConstants.au3>
#include <StaticConstants.au3>
#include <WindowsConstants.au3>
#include <ProgressConstants.au3>
#include <Security.au3>
#include <Memory.au3>
#include <UDFGlobalID.au3>
#include <GuiStatusBar.au3>
#include <GUIEdit.au3>
#include-once
#include <WinAPI.au3>
#include <WindowsConstants.au3>
#include <GUIConstantsEx.au3>
#include <Constants.au3>
#include <GUIEdit.au3>
#include <GuiToolbar.au3>
#include <inet.au3>
#include <array.au3>
#include <ie.au3>

AdlibRegister("CheckMouse")

$oWMP = ObjCreate("WMPLayer.ocx")
$GUI = GUICreate("BlackEyes Stream Player", 498, 357, 238, 172)
$Pic1 = GUICtrlCreatePic("C:\Users\Tobias\Desktop\Schwarzer-hintergrund.jpg", 0, 0, 497, 353, BitOR($WS_GROUP, $WS_CLIPSIBLINGS))
$Combo1 = GUICtrlCreateCombo("Bitte auswählen", 144, 112, 209, 25)
GUICtrlSetData(-1, "TechnoBase.FM|Top100Station|Planet Radio|YouFM|BigFM|89.0 RTL", "Bitte auswählen")
$Label1 = GUICtrlCreateLabel("Radio Streams", 144, 88, 94, 20)
GUICtrlSetBkColor(-1, $GUI_BKCOLOR_TRANSPARENT)
GUICtrlSetFont(-1, 10, 400, 0, "MS Sans Serif")
GUICtrlSetColor(-1, 0xFFFFFF)
$Button1 = GUICtrlCreateButton("Play", 24, 304, 193, 33, $WS_GROUP)
GUICtrlSetFont(-1, 10, 400, 0, "MS Sans Serif")
$Button2 = GUICtrlCreateButton("Stop", 280, 304, 193, 33, $WS_GROUP)
GUICtrlSetFont(-1, 10, 400, 0, "MS Sans Serif")
GUICtrlSetState($Button2, $GUI_DISABLE)
$Progress1 = GUICtrlCreateProgress(8, 8, 33, 265, $PBS_VERTICAL)
$Volume = GUICtrlCreateSlider(448, 8, 33, 265, BitOR($TBS_AUTOTICKS, $TBS_VERT))
GUICtrlSetData(-1, $oWMP.settings.volume())
GUICtrlSetState($Volume, $GUI_DISABLE)
GUISetState(@SW_SHOW)

While 1
$nMsg = GUIGetMsg()
Switch $nMsg
Case $GUI_EVENT_CLOSE
Exit
Case $Button1
$readcombo1 = GUICtrlRead($Combo1)
Select
Case $readcombo1 = "TechnoBase.FM"
$oWMP.URL = 'http://listen.technobase.fm/tunein-dsl-asx'
Case $readcombo1 = "Top100Station"
$oWMP.URL = 'http://www.top100station.de/switch/r3472.asx'
Case $readcombo1 = "Planet Radio"
$oWMP.URL = 'http://lsd.newmedia.nacamar.net/bb/redirect.lsc?stream=planetradio$livestream.mp3&content=live&media=mp3'
Case $readcombo1 = "YouFM"
$oWMP.URL = 'http://metafiles.gl-systemhaus.de/hr/youfm_1.asx'
Case $readcombo1 = "BigFM"
$oWMP.URL = 'http://217.151.152.245/bigfm-mp3-96'
Case $readcombo1 = "89.0 RTL"
$oWMP.URL = 'http://www.89.0rtl.de/webradio/rtl-high.m3u'
EndSelect
$oWMP.controls.play()
GUICtrlSetData($Progress1, 100)
$oWMP.settings.volume = 50
GUICtrlSetState($Volume, $GUI_ENABLE)
GUICtrlSetState($Button1, $GUI_DISABLE)
GUICtrlSetState($Button2, $GUI_ENABLE)
GUICtrlSetState($Combo1, $GUI_DISABLE)
Case $Button2
$oWMP.controls.stop()
GUICtrlSetState($Volume, $GUI_DISABLE)
GUICtrlSetState($Button1, $GUI_ENABLE)
GUICtrlSetState($Button2, $GUI_DISABLE)
GUICtrlSetState($Combo1, $GUI_ENABLE)
Case $Volume
$oWMP.settings.volume = 100 - GUICtrlRead($Volume)
EndSwitch
WEnd

Func CheckMouse()
Local Static $mouseout = 0
$aMpos = MouseGetPos()
$aWpos = WinGetPos("BlackEyes Stream Player")
If $aMpos[0] > $aWpos[0] And $aMpos[0] < $aWpos[0] + $aWpos[2] And $aMpos[1] > $aWpos[1] And $aMpos[1] < $aWpos[1] + $aWpos[3] Then
If $mouseout = 1 Then
For $i = 30 To 255 Step 30
WinSetTrans("BlackEyes Stream Player", "", $i)
Sleep(50)
Next
WinSetTrans("BlackEyes Stream Player", "", 255)
$mouseout = 0
EndIf
Else
If $mouseout = 0 Then
For $i = 255 To 30 Step -30
WinSetTrans("BlackEyes Stream Player", "", $i)
Sleep(50)
Next
$mouseout = 1
EndIf
EndIf
EndFunc ;==>CheckMouse