Define the following global variables:
LColor clr;
CONVERSION_PARAMS params;
BYTE RGBColor[3];
BYTE ColorSpace[4];
Set the conversion options by filling a CONVERSION_PARAMS structure:
memset(¶ms, 0, sizeof(CONVERSION_PARAMS));
params.uStructSize = sizeof(CONVERSION_PARAMS);
params.nMethod = USE_CUSTOM_ICC;
params.nActiveMethod = USE_CUSTOM_ICC;
params.pWpoint = (LPWHITEPOINT)malloc(sizeof(WHITEPOINT));
params.pWpoint->nWhitePoint = CIELAB_D50;
params.pMemInputProfile = NULL;
params.pMemOutputProfile = NULL;
lstrcpy(params.sInputProfile, TEXT("C:\\MyCMYKProfile.ICM"));
lstrcpy(params.sOutputProfile, TEXT("C:\\MyRGBProfile.ICM"));
Initialize the color conversion object with LColor::Initialize():
clr.Initialize(CCS_CMYK, CCS_RGB, ¶ms);
Now, do the conversion:
ColorSpace[0] = 100;
ColorSpace[1] = 100;
ColorSpace[2] = 100;
ColorSpace[3] = 100;
clr.Convert(ColorSpace, RGBColor, 1, 1, 0, 0);
At the end, free the color conversion object:
clr.Free();