Returns pixel format of an image: Bits per pixel, Alpha channels, RGB, Grayscale, Indexed etc
#include <GDIPlus.au3>
_GDIPlus_ImageGetPixelFormat ( $hImage )
| $hImage | Handle to an image object |
| Success: | an array with the following format: [0] - Integer of pixel format constant [1] - String of pixel format |
| Failure: | sets the @error flag to non-zero, @extended may contain GPSTATUS error code ($GPIP_ERR* see GPIPlusConstants.au3). |
| @error: | 10 - Invalid pixel format. 11 - Invalid image handle. 12 - Unknown pixel format. |
_GDIPlus_BitmapCloneArea, _GDIPlus_BitmapLockBits, _GDIPlus_ImageGetFlags
Search GdipGetImagePixelFormat in MSDN Library.
#include <GDIPlus.au3>
#include <GUIConstantsEx.au3>
#include <ScreenCapture.au3>
#include <WinAPIHObj.au3>
#include <WindowsConstants.au3>
Global $g_idMemo
Example()
Func Example()
Local $hBitmap, $hImage, $aRet
; Create GUI
GUICreate("GDI+", 600, 400)
$g_idMemo = GUICtrlCreateEdit("", 2, 2, 596, 396, $WS_VSCROLL)
GUICtrlSetFont($g_idMemo, 9, 400, 0, "Courier New")
GUISetState(@SW_SHOW)
; Initialize GDI+ library
_GDIPlus_Startup()
; Capture 32 bit bitmap
$hBitmap = _ScreenCapture_Capture("")
$hImage = _GDIPlus_BitmapCreateFromHBITMAP($hBitmap)
; Show pixel format for screen capture
$aRet = _GDIPlus_ImageGetPixelFormat($hImage)
MemoWrite("Image pixel format of screen capture: " & $aRet[1]);
MemoWrite("Image pixel format constant: " & $aRet[0]);
MemoWrite();
; Save screen capture bitmap to file
_GDIPlus_ImageSaveToFile($hImage, @MyDocumentsDir & "\GDIPlus_Image.jpg")
; Clean up resources
_GDIPlus_ImageDispose($hImage)
_WinAPI_DeleteObject($hBitmap)
; Load screen capture bitmap from file
$hImage = _GDIPlus_ImageLoadFromFile(@MyDocumentsDir & "\GDIPlus_Image.jpg")
; Show pixel format for saved file
$aRet = _GDIPlus_ImageGetPixelFormat($hImage)
MemoWrite("Image pixel format of saved file: " & $aRet[1]);
MemoWrite("Image pixel format constant: " & $aRet[0]);
; Clean up resources
_GDIPlus_ImageDispose($hImage)
; Shut down GDI+ library
_GDIPlus_Shutdown()
; Loop until the user exits.
Do
Until GUIGetMsg() = $GUI_EVENT_CLOSE
EndFunc ;==>Example
; Write a line to the memo control
Func MemoWrite($sMessage = '')
GUICtrlSetData($g_idMemo, $sMessage & @CRLF, 1)
EndFunc ;==>MemoWrite