问创建CMYK+alpha位图，将黑色映射到特定的CMYK颜色

EN

using WebSupergoo.ABCpdf10;
using WebSupergoo.ABCpdf10.Objects;

namespace RecolorRenderedImage
{
    class Program
    {
        static void Main(string[] args)
        {
            using (Doc theDoc = new Doc()) {
                // this background image is there to prove that the text is not obscuring other pdf objects
                theDoc.AddImage("c:\\temp\\background-pic.jpg");

                // this is the black warped text
                string fullFilePath = "c:\\temp\\foobar.png";

                // read it into an XImage. Add to the doc, and retrieve the pixmap
                XReadOptions readOptions = new XReadOptions();
                XImage image = XImage.FromFile(fullFilePath, readOptions);
                int theID = theDoc.AddImageObject(image, true);
                int imageID = theDoc.GetInfoInt(theID, "XObject");
                PixMap thePM = (PixMap)theDoc.ObjectSoup[imageID];

                // recolor the pixmap temporary spot color space with the desired color (gold in this case)
                int spotColorID = theDoc.AddColorSpaceSpot("tempSpace", "24 44 100 2");
                ColorSpace theSP = (ColorSpace)theDoc.ObjectSoup[spotColorID];
                thePM.Recolor(theSP);

                // immediately recolor the pixmap back to CMYK
                ColorSpace theSP2 = new ColorSpace(theDoc.ObjectSoup, ColorSpaceType.DeviceCMYK);
                thePM.Recolor(theSP2);

                theDoc.Save("c:\\temp\\test.pdf");
            }
        }

    }
}