creating pdfpath with CMYK color

[spirepap]

how to create PdfPath with CMYK colorspace?

[Betsy.jiang]

Dear spirepap,

Thanks for your inquiry.
Sorry that Spire.PDF doesn't support CMYK colorspace at present, and we have added the new feature into our schedule. We will infrom you as soon as it is done.
Sorry for inconvenience caused.

Sincerely,
Betsy
E-iceblue support team

[Betsy.jiang]

Dear spirepap,

Thanks for your waiting.
We just release the Spire.PDF Pack(Hot Fix) Version:3.8.152, which includes that new feature. Welcome to test it.
Here is sample code for your reference.

Code: Select all

                PdfDocument pdf = new PdfDocument();
                PdfPageBase page = pdf.Pages.Add();
                PdfSeparationColorSpace cs = new PdfSeparationColorSpace("MySpotColor", Color.Red);
                //Light
                PdfSeparationColor color = new PdfSeparationColor(cs, 0.1f);
                PdfSolidBrush brush = new PdfSolidBrush(color);
                page.Canvas.DrawString("Test light", new PdfFont(PdfFontFamily.Helvetica, 13f), brush, PointF.Empty);
                //Medium
                color = new PdfSeparationColor(cs, 0.5f);
                brush = new PdfSolidBrush(color);
                page.Canvas.DrawString("Test medium", new PdfFont(PdfFontFamily.Helvetica, 13f), brush, new PointF(0, 20));
                //Darkest
                color = new PdfSeparationColor(cs, 1);
                brush = new PdfSolidBrush(color);
                page.Canvas.DrawString("Test darkest", new PdfFont(PdfFontFamily.Helvetica, 13f), brush, new PointF(0, 40));
                pdf.SaveToFile("SpotColor.pdf");

If there is any question, welcome to get it back to us.

Sincerely,
Betsy
E-iceblue support team

[spirepap]

Thank you so much for the support, it worked fine.

[Betsy.jiang]

Dear spirepap,

Thanks for your feedback.
Sorry that I forgot to tell you that the code I provided is to create spot color. According your description, you want the path name and CMYK, but there is no that name statement for path in PDF, we suppose you want spot color which may meet your requirement.
And there is code about CMYK for your reference.

Code: Select all

            PdfDocument pdfdoc = new PdfDocument();
            PdfPageBase page = pdfdoc.Pages.Add();
            pdfdoc.ColorSpace = PdfColorSpace.CMYK;
            PdfSolidBrush brush = new PdfSolidBrush(new PdfRGBColor(0, 0.5f, 0.25f, 0));
            page.Canvas.DrawLine(new PdfPen(brush), new PointF(100, 100), new PointF(300, 100));
            pdfdoc.SaveToFile("SetCMYKColor.pdf", FileFormat.PDF);

If there is any question, welcome to get it back to us.

Sincerely,
Betsy
E-iceblue support team