Fensterinhalt mit GDI+ vergrößert in anderem Fenster darstellen ?

#include <WindowsConstants.au3>
#Include <GDIPlus.au3>

dim $exe_path="notepad.exe",$exe_windowname="Unbenannt"

consolewrite("waiting for application window"&@CRLF)
if not WinExists($exe_windowname) then
Run($exe_path)
while not WinExists($exe_windowname)
sleep(100)
wend
endif
consolewrite("window found"&@CRLF)

$hwnd=WinGetHandle($exe_windowname)
$gui=GuiCreate("GDI+ Test Parent",320,240,0,0,$WS_SIZEBOX)
GuiSetState(@SW_SHOW,$gui)

$gui_size=WinGetPos($gui)
$app_size=WinGetPos($hwnd)
consolewrite("app size: "&$app_size[2]&"x"&$app_size[3]&@CRLF)

consolewrite("gdi init..."&@CRLF)
if not _GDIPlus_Startup() then consolewrite("couldn' init gdi"&@CRLF)

$g_gui=_GDIPlus_GraphicsCreateFromHWND($gui)
if $g_gui==0 then consolewrite("error 1"&@CRLF)

$g_hwnd=_GDIPlus_GraphicsCreateFromHWND($hwnd)
if $g_hwnd==0 then consolewrite("error 2"&@CRLF)

$b_hwnd=_GDIPlus_BitmapCreateFromGraphics($app_size[2],$app_size[3],$g_hwnd)
if $b_hwnd==0 then
consolewrite("error 3"&@CRLF)
else
consolewrite("image size: "&_GDIPlus_ImageGetWidth($b_hwnd)&"x"&_GDIPlus_ImageGetHeight($b_hwnd)&@CRLF)
endif

if not _GDIPlus_GraphicsDrawImageRectRect($g_gui,$b_hwnd,$app_size[0],$app_size[1],$app_size[2],$app_size[3],0,0,$gui_size[2],$gui_size[3]) then consolewrite("error 4"&@CRLF)
consolewrite("done."&@CRLF&"waiting 3 seconds until script termination..."&@CRLF)

sleep(3000)

ProcessClose(WinGetProcess($hwnd))
consolewrite("clearing gdi+"&@CRLF)
_WinAPI_DeleteObject($b_hwnd)
_GDIPlus_GraphicsDispose($g_hwnd)
_GDIPlus_GraphicsDispose($g_gui)
_GDIPlus_Shutdown()
consolewrite("exiting"&@CRLF)

#include <GUIConstantsEx.au3>
#include <WindowsConstants.au3>

#Include <WinAPI.au3>
#Include <Constants.au3>

dim $msg,$exe_path="notepad.exe",$exe_windowname="Unbenannt",$refresh=100,$refresh_tmr=-1
dim $x=-1,$y=-1,$w=320,$h=240

global $gui,$hwnd,$exe_terminate=true,$dll[2]

$dll[0] = DllOpen ( "user32.dll")
$dll[1] = DllOpen ( "gdi32.dll")

consolewrite("waiting for application window"&@CRLF)
if not WinExists($exe_windowname) then
Run($exe_path)
while not WinExists($exe_windowname)
sleep(100)
wend
endif
consolewrite("window found"&@CRLF)

$hwnd=WinGetHandle($exe_windowname)
$gui=GuiCreate("ZoomApp",$w,$h,$x,$y,$WS_SIZEBOX)
GuiSetState(@SW_SHOW,$gui)

$refresh_tmr=TimerInit()
while WinExists($hwnd)
$msg=GuiGetMsg()
if $msg==$GUI_EVENT_CLOSE then _Exit()
if TimerDiff($refresh_tmr)>=$refresh then
$state=WinGetState($gui)
if BitAnd($state,2) then
consolewrite("clone app in gui"&@CRLF)
_Stretch()
else
consolewrite("gui is hidden. don't clone to save cpu power"&@CRLF)
endif
$refresh_tmr=TimerInit()
endif
sleep(10)
wend

; ---------- FUNCTIONS -----------------------------------------------------------------------------------------------------------------------------------------

Func _Exit()
DLLClose($dll[0])
DLLClose($dll[1])
consolewrite("exit function called"&@CRLF)
if WinExists($hwnd) and $exe_terminate==true then
consolewrite("terminating application"&@CRLF)
ProcessClose(WinGetProcess($hwnd))
endif
exit
EndFunc

Func _Stretch()
; get size of app and gui
$gui_size=WinGetPos($gui)
$app_size=WinGetPos($hwnd)

$appHDC = DLLCall("user32.dll","int","GetDC","hwnd",$hwnd)
$guiHDC = DLLCall("user32.dll","int","GetDC","hwnd",$gui)

If Not @error Then
DLLCall("gdi32.dll", "int", "StretchBlt", "int", $guiHDC[0], "int", _
0, "int", 0, "int", $gui_size[2], "int", $gui_size[3], "int", $appHDC[0], "int", _
0, "int", 0, "int", $app_size[2] ,"int", $app_size[3], _
"long", $SRCCOPY)
DLLCall("user32.dll","int","ReleaseDC","int",$appHDC[0],"hwnd",$hwnd)
DLLCall("user32.dll","int","ReleaseDC","int",$guiHDC[0],"hwnd",$gui)
return 1
EndIf

; return 0 when an error occured
return 0
EndFunc