HILFE GESUCHT: Bild in Format X in Icon-Datei (*.ico) umwandeln/konvertieren/abspeichern

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#include <GDIPlus.au3>
#include <WinAPI.au3>
$file = FileOpenDialog("Ein Bild auswählen", "", "Bilder (*.jpg;*.bmp;*.png)")
If @error Then Exit

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_GDIPlus_Startup ()
$bild = Resize($file)
$hIcon = _GDIPlus_BitmapCreateHICONFromBitmap($bild)
_CreateIconFileFromHICON($hIcon, @ScriptDir & "\Test.ico")
_WinAPI_DestroyIcon($hIcon)
_GDIPlus_BitmapDispose($bild)
Exit

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Func Resize($sFilename, $width = 64, $height = 64) ; code by UEZ 2011
Local $hBitmap = _GDIPlus_BitmapCreateFromFile($sFilename)
Local $iH = _GDIPlus_ImageGetHeight($hBitmap)
Local $iW = _GDIPlus_ImageGetWidth($hBitmap)
Local $hImage = _GDIPlus_BitmapCreateFromScan0($width, $height)
Local $hContext = _GDIPlus_ImageGetGraphicsContext($hImage)
If $iW < $width And $iH < $height Then
$w = $width / 2 - $iW / 2
$h = $height / 2 - $iH / 2
_GDIPlus_GraphicsDrawImageRect($hContext, $hBitmap, $width / 2 - $iW / 2, $height / 2 - $iH / 2, $iW, $iH)
Else
If $iW > $iH Then
$f = $iW / $width
Else
$f = $iH / $height
EndIf
$w = $iW / $f
$h = $iH / $f
_GDIPlus_GraphicsDrawImageRect($hContext, $hBitmap, $width / 2 - $w / 2, $height / 2 - $h / 2, $w, $h)
EndIf
_GDIPlus_GraphicsDispose($hContext)
_GDIPlus_BitmapDispose($hBitmap)
Return $hImage
EndFunc

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Func _CreateIconFileFromHICON($hIcon, $sOutIcon) ;code by smashly
Local $aInfo, $sIco, $sBmp, $hCDC, $tBI, $tBits, $iSz, $sBD, $FO

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; Start of single Icon Header 3 x 2 bytes = 6 bytes: 0000 Reserved / 0100 Icon / 0100 Numer of icons, total length will be 22 bytes for a single icon when finished
$sIco = "0x000001000100"

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; Start of the Bitmap data header 1 x 4bytes: length of the header will be 40 bytes when finished. Will be appended to the end of the icon header when finished
$sBmp = "28000000"

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; Get info about the HICON, this is mainly to get the pointers to the Color/Mask bitmaps data
$aInfo = _WinAPI_GetIconInfo($hIcon)

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; Create a memory Compatable DC
$hCDC = _WinAPI_CreateCompatibleDC(0)

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; Create a BITMAPINFO Struct to store the Bitmap Info, it needs to be inilialized by setting the struct size.
$tBI = DllStructCreate($tagBITMAPINFO)
DllStructSetData($tBI, "Size", DllStructGetSize($tBI))

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; Pass a bitmap data pointer to the BITMAPINFO struct so we can recieve the details of the color bitmap data, we use it to write the headers
_WinAPI_GetDIBits($hCDC, $aInfo[5], 0, 0, 0, DllStructGetPtr($tBI), 0)

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; Now we have some the basic info to add to the Icon & Bitmap header so we'll add that to the headers.
$sIco &= Hex(DllStructGetData($tBI, "Width"), 2) & Hex(DllStructGetData($tBI, "Height"), 2) & "00000100" & _RB(Hex(DllStructGetData($tBI, "BitCount"), 4))
$sBmp &= _RB(Hex(DllStructGetData($tBI, "Width"), 8)) & _RB(Hex(DllStructGetData($tBI, "Height") * 2, 8)) & "0100" & _RB(Hex(DllStructGetData($tBI, "BitCount"), 4)) & "00000000"

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; Get the size of the Bitmap data from the BITMAPINFO Struct, we'll use this in the headers further on.
$iSz = DllStructGetData($tBI, "SizeImage")

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; Create a struct to store the Bitmap data Bits of the first bitmap, reset the BITMAPINFO struct
$tBits = DllStructCreate("byte[" & DllStructGetData($tBI, "SizeImage") & "]")

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; Get the color bitmap dib bits into the $tBits struct.
DllCall('gdi32.dll', 'int', 'GetBitmapBits', 'ptr', $aInfo[5], 'int', $iSz, 'ptr', DllStructGetPtr($tBits))

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; Get GetBitmapBits returns Bottom to Top dib, so I turn it to Top to Bottom dib
; ATM I'm only assuming that GetBitmapBits returns a Bottom to Top dib, maybe the bitmap bits you use could be Top Down already?.
For $i = DllStructGetData($tBI, "SizeImage") + 1 To 0 Step -(DllStructGetData($tBI, "SizeImage") / DllStructGetData($tBI, "Height"))
$sBD &= StringTrimLeft(BinaryMid(DllStructGetData($tBits, 1), $i, (DllStructGetData($tBI, "SizeImage") / DllStructGetData($tBI, "Height"))), 2)
Next

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;Clear the BITMAPINFO & $tBits Struct as we'll use the same variables again for the mask bitmap data
$tBits = 0
$tBI = 0

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; Create a BITMAPINFO Struct to store the Bitmap Info again, it needs to be inilialized by setting the struct size.
$tBI = DllStructCreate($tagBITMAPINFO)
DllStructSetData($tBI, "Size", DllStructGetSize($tBI))

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; Pass a bitmap data pointer to the BITMAPINFO struct so we can recieve the details of the bitmask bitmap data
_WinAPI_GetDIBits($hCDC, $aInfo[4], 0, 0, 0, DllStructGetPtr($tBI), 0)

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; We've finished with the Compatable DC, delete it.
_WinAPI_DeleteDC($hCDC)

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; Add the size of the of the color + bitmask bitmap data as we need this for both the Icon & Bitmap header
$iSz += DllStructGetData($tBI, "SizeImage")

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; combine the bitmap data size with the bitmap header, I'm padding the rest of the 40 byte bitmap header with 0's., that's the Bitmap header done
$sBmp &= _RB(Hex($iSz, 8)) & "00000000000000000000000000000000"

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; Now add the size of the Bitmap data + bitmap header size and combine the icon header together with the bitmap header and color bitmap data
$sIco &= _RB(Hex($iSz + 40, 8)) & _RB(Hex("22", 8)) & $sBmp & $sBD

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; Create a struct to store the Bitmap dib Bits of the mask bitmap
$tBits = DllStructCreate("byte[" & DllStructGetData($tBI, "SizeImage") & "]")

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; Get the mask bitmap dib bits into the $tBits struct.
DllCall('gdi32.dll', 'int', 'GetBitmapBits', 'ptr', $aInfo[4], 'int', DllStructGetData($tBI, "SizeImage"), 'ptr', DllStructGetPtr($tBits))

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; Get GetBitmapBits returns Bottom to Top dib, so I turn it to a Top to Bottom dib and append the mask bitmap data to the icon
For $i = DllStructGetData($tBI, "SizeImage") + 1 To 0 Step -(DllStructGetData($tBI, "SizeImage") / DllStructGetData($tBI, "Height"))
$sIco &= StringTrimLeft(BinaryMid(DllStructGetData($tBits, 1), $i, (DllStructGetData($tBI, "SizeImage") / DllStructGetData($tBI, "Height"))), 2)
Next

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; Write the icon to a file.
$FO = FileOpen($sOutIcon, 18)
FileWrite($sOutIcon, Binary($sIco))
FileClose($FO)

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; Clear the structs
$tBits = 0
$tBI = 0
EndFunc ;==>_CreateIconFileFromHICON

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Func _GDIPlus_BitmapCreateFromScan0($iWidth, $iHeight, $iStride = 0, $iPixelFormat = 0x0026200A, $pScan0 = 0)
Local $aResult = DllCall($ghGDIPDll, "uint", "GdipCreateBitmapFromScan0", "int", $iWidth, "int", $iHeight, "int", $iStride, "int", $iPixelFormat, "ptr", $pScan0, "int*", 0)
If @error Then Return SetError(@error, @extended, 0)
Return $aResult[6]
EndFunc ;==>_GDIPlus_BitmapCreateFromScan0

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Func _GDIPlus_BitmapCreateHICONFromBitmap($hBitmap)
Local $hIcon
$hIcon = DllCall($ghGDIPDll, "int", "GdipCreateHICONFromBitmap", "hwnd", $hBitmap, "int*", 0)
If @error Then Return SetError(@error, 0, -1)
Return SetError($hIcon[0], 0, $hIcon[2])
EndFunc ;==>_GDIPlus_BitmapCreateHICONFromBitmap

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; Reverse Byte String
Func _RB($sByte)
Local $aX = StringRegExp($sByte, "(.{2})", 3), $sX = ''
For $i = UBound($aX) - 1 To 0 Step -1
$sX &= $aX[$i]
Next
Return $sX
EndFunc ;==>_RB

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