PDFsharp & MigraDoc Foundation

PDFsharp - A .NET library for processing PDF & MigraDoc Foundation - Creating documents on the fly
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 Post subject: Overprint option
PostPosted: Thu Dec 02, 2010 1:22 pm 
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Joined: Thu Dec 02, 2010 1:17 pm
Posts: 1
I'm developing an application that needs to create prepress ready proofs. PDFSharp is working out perfectly but a request has come to me to mark the dieline (border around the shapes) as overprint so they can toggle it off in Illustrator. I'm not an Illustrator person by any means so I'm not entirely sure what's being requested. Does this option exist in PDFSharp?

Thanks in advance,
Mike


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 Post subject: Re: Overprint option
PostPosted: Wed Dec 08, 2010 7:12 pm 
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Joined: Wed Dec 08, 2010 6:35 pm
Posts: 2
You can toggle overprint preview in Adobe Reader as well (under prefs -> Page Display).
I think you want to stroke the dieline with PdfExtGState.Keys.OP set to true.

Frank.


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 Post subject: Re: Overprint option
PostPosted: Thu Dec 08, 2016 1:20 pm 
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Joined: Thu Dec 08, 2016 1:17 pm
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How do you set the PdfExtGState.Keys.OP to true?


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 Post subject: Re: Overprint option
PostPosted: Wed Dec 13, 2017 2:50 pm 
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Joined: Wed Dec 13, 2017 2:45 pm
Posts: 1
This is how I got overprinting to work...

Dim overPrintBlackBrush As XSolidBrush

overPrintBlackBrush = New XSolidBrush
overPrintBlackBrush.Color = XColor.FromKnownColor(XKnownColor.Black)
overPrintBlackBrush.Overprint = True
penPoint = New XPoint(36, 36)
gfx.DrawString("Overprint Black Text!", mediumRegularFont, overPrintBlackBrush, penPoint)

penPoint = New XPoint(36, 66)
gfx.DrawRectangle(overPrintBlackBrush, 10, 10, 20, 20)


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