> Perhaps I should have mentioned that you need at least .Net 4 In 3.5 it's available but does not work...
According to HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\NET Framework Setup\NDP I have Version 4 but it's worth updating to a newer version... > https://social.msdn.microsoft.com/Forums/en-US/be7ad7d6-972f-4a39-ae90-55660 d66c561/iccprofildaten-via-colorcontext?forum=wpfde) Danke shön für der Microsoft Forum link -- ich sprache nicht viele deutche aber I will try to read/translate as best I can. ------------ I used your DLLimport declaration and suggested code aber, yetz, ich bin haben "Memory violation" problem. Das ist meine humble C# code : [DllImport(@lcms2Path, CallingConvention = CallingConvention.Winapi)] public static extern void cmsDoTransform( [In] IntPtr Transform, [In] byte[] InputBuffer, [Out] byte[] OutputBuffer, [In] UInt32 Size); IntPtr hSource = cmsOpenProfileFromFile("C:\\Windows\\System32\\spool\\drivers\\color\\AppleR GB.icc", "r"); IntPtr hDestination = cmsOpenProfileFromFile("C:\\Windows\\System32\\spool\\drivers\\color\\Coated GRACoL2006.icc", "r"); IntPtr Transform = cmsCreateTransform(hSRGB, TYPE_BGR_8, hDestination, TYPE_CMYK_8, INTENT_RELATIVE_COLORIMETRIC, 0); PixelFormat inputFormat = myBitmapFrame.Format; // copy image data to byte[] int stride = myBitmapFrame.PixelWidth * inputFormat.BitsPerPixel / 8; Byte[] inputBitmapData = new Byte[stride * myBitmapFrame.PixelHeight]; myBitmapFrame.CopyPixels(inputBitmapData, stride, 0); Byte[] outputBitmapData = inputBitmapData.Clone() as Byte[]; cmsDoTransform(xform, inputBitmapData, outputBitmapData, (uint)(myBitmapFrame.PixelWidth * myBitmapFrame.PixelHeight)); ---------------- The error occurs on this last line of code: System.AccessViolationException Attempted to read or write protected memory. The error does not point to which element to cmsDoTransform that is causing the AccessViolation? The inputBitmapData is a pointer. So is the outputBitmapdata. I will continue searching for more details.... MfG / Roger ------------------------------------------------------------------------------ Attend Shape: An AT&T Tech Expo July 15-16. Meet us at AT&T Park in San Francisco, CA to explore cutting-edge tech and listen to tech luminaries present their vision of the future. This family event has something for everyone, including kids. Get more information and register today. http://sdm.link/attshape _______________________________________________ Lcms-user mailing list Lcms-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/lcms-user
