Hey,
ich möchte gerne Bilder aus dem Netz auf meine GUI zeichnen lassen und finde es unsinnig, wenn ich die als binary bekomme, die erst abzuspeichern...
UEZ hat mir da schon mit seiner UDF geholfen, leider habe ich nie so das rechte Verständnis für GDI+...
Wäre sehr dankbar, wenn mir jemand den letzten Step erklärt :).
Lauffähiger Minimalcode:
Spoiler anzeigen
#include <winhttp.au3>
#include <GUIConstantsEx.au3>
#include <WindowsConstants.au3>
#include <GDIPlus.au3>
#include <Memory.au3>
Global $hSession, $hConnect
Global $bPic, $hFile
$hSession = _WinHttpOpen("ShowCase")
$hConnect = _WinHttpConnect($hSession, "bilder.fotoweinwurm.at")
$bPic = _WinHttpSimpleRequest($hConnect, "GET", "/archive/w/hp281309.jpg", Default, Default, Default, Default, 2)
[/autoit] [autoit][/autoit] [autoit]_WinHttpCloseHandle($hConnect)
_WinHttpCloseHandle($hSession)
$GUI = GUICreate("ShowCase")
GUISetState(@SW_SHOW)
_GDIPlus_Startup()
$hGraphic = _GDIPlus_GraphicsCreateFromHWND($GUI)
$pic = Load_BMP_From_Mem($bPic, True)
$hImage2 = _GDIPlus_BitmapCreateFromHBITMAP($pic)
_GDIPlus_GraphicsDrawImage($hGraphic, $hImage2, 0, 0)
While 1
$msg = GUIGetMsg()
If $msg = $GUI_EVENT_CLOSE Then
_GDIPlus_GraphicsDispose($hGraphic)
_GDIPlus_Shutdown()
ExitLoop
EndIf
WEnd
;======================================================================================
; Function Name: Load_BMP_From_Mem
; Description: Loads an image which is saved as a binary string and converts it to a bitmap or hbitmap
;
; Parameters: $bImage: the binary string which contains any valid image which is supported by GDI+
; Optional: $hHBITMAP: if false a bitmap will be created, if true a hbitmap will be created
;
; Remark: hbitmap format is used generally for GUI internal images, $bitmap is more a GDI+ image format
; Don't forget _GDIPlus_Startup() and _GDIPlus_Shutdown()
;
; Requirement(s): GDIPlus.au3, Memory.au3 and _GDIPlus_BitmapCreateDIBFromBitmap() from WinAPIEx.au3
; Return Value(s): Success: handle to bitmap (GDI+ bitmap format) or hbitmap (WinAPI bitmap format),
; Error: 0
; Error codes: 1: $bImage is not a binary string
; 2: unable to create stream on HGlobal
; 3: unable to create bitmap from stream
;
; Author(s): UEZ
; Additional Code: thanks to progandy for the MemGlobalAlloc and tVARIANT lines and
; Yashied for _GDIPlus_BitmapCreateDIBFromBitmap() from WinAPIEx.au3
; Version: v0.97 Build 2012-04-10 Beta
;=======================================================================================
Func Load_BMP_From_Mem($bImage, $hHBITMAP = False)
If Not IsBinary($bImage) Then Return SetError(1, 0, 0)
Local $aResult
Local Const $memBitmap = Binary($bImage) ;load image saved in variable (memory) and convert it to binary
Local Const $len = BinaryLen($memBitmap) ;get length of image
Local Const $hData = _MemGlobalAlloc($len, $GMEM_MOVEABLE) ;allocates movable memory ($GMEM_MOVEABLE = 0x0002)
Local Const $pData = _MemGlobalLock($hData) ;translate the handle into a pointer
Local $tMem = DllStructCreate("byte[" & $len & "]", $pData) ;create struct
DllStructSetData($tMem, 1, $memBitmap) ;fill struct with image data
_MemGlobalUnlock($hData) ;decrements the lock count associated with a memory object that was allocated with GMEM_MOVEABLE
$aResult = DllCall("ole32.dll", "int", "CreateStreamOnHGlobal", "handle", $pData, "int", True, "ptr*", 0) ;Creates a stream object that uses an HGLOBAL memory handle to store the stream contents
If @error Then Return SetError(2, 0, 0)
Local Const $hStream = $aResult[3]
$aResult = DllCall($ghGDIPDll, "uint", "GdipCreateBitmapFromStream", "ptr", $hStream, "int*", 0) ;Creates a Bitmap object based on an IStream COM interface
If @error Then Return SetError(3, 0, 0)
Local Const $hBitmap = $aResult[2]
Local $tVARIANT = DllStructCreate("word vt;word r1;word r2;word r3;ptr data; ptr")
DllCall("oleaut32.dll", "long", "DispCallFunc", "ptr", $hStream, "dword", 8 + 8 * @AutoItX64, _
"dword", 4, "dword", 23, "dword", 0, "ptr", 0, "ptr", 0, "ptr", DllStructGetPtr($tVARIANT)) ;release memory from $hStream to avoid memory leak
$tMem = 0
$tVARIANT = 0
If $hHBITMAP Then
Local Const $hHBmp = _GDIPlus_BitmapCreateDIBFromBitmap($hBitmap)
_GDIPlus_BitmapDispose($hBitmap)
Return $hHBmp
EndIf
Return $hBitmap
EndFunc ;==>Load_BMP_From_Mem
Func _GDIPlus_BitmapCreateDIBFromBitmap($hBitmap)
Local $tBIHDR, $Ret, $tData, $pBits, $hResult = 0
$Ret = DllCall($ghGDIPDll, 'uint', 'GdipGetImageDimension', 'ptr', $hBitmap, 'float*', 0, 'float*', 0)
If (@error) Or ($Ret[0]) Then Return 0
$tData = _GDIPlus_BitmapLockBits($hBitmap, 0, 0, $Ret[2], $Ret[3], $GDIP_ILMREAD, $GDIP_PXF32ARGB)
$pBits = DllStructGetData($tData, 'Scan0')
If Not $pBits Then Return 0
$tBIHDR = DllStructCreate('dword;long;long;ushort;ushort;dword;dword;long;long;dword;dword')
DllStructSetData($tBIHDR, 1, DllStructGetSize($tBIHDR))
DllStructSetData($tBIHDR, 2, $Ret[2])
DllStructSetData($tBIHDR, 3, $Ret[3])
DllStructSetData($tBIHDR, 4, 1)
DllStructSetData($tBIHDR, 5, 32)
DllStructSetData($tBIHDR, 6, 0)
$hResult = DllCall('gdi32.dll', 'ptr', 'CreateDIBSection', 'hwnd', 0, 'ptr', DllStructGetPtr($tBIHDR), 'uint', 0, 'ptr*', 0, 'ptr', 0, 'dword', 0)
If (Not @error) And ($hResult[0]) Then
DllCall('gdi32.dll', 'dword', 'SetBitmapBits', 'ptr', $hResult[0], 'dword', $Ret[2] * $Ret[3] * 4, 'ptr', DllStructGetData($tData, 'Scan0'))
$hResult = $hResult[0]
Else
$hResult = 0
EndIf
_GDIPlus_BitmapUnlockBits($hBitmap, $tData)
Return $hResult
EndFunc ;==>_GDIPlus_BitmapCreateDIBFromBitmap
Func __GDIPlus_Shutdown()
_GDIPlus_Shutdown()
EndFunc ;==>GDIPlus_Shutdown
LG
Aca