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Topic: Re: How to link a new stream?
Conf: (P-PDF) Developers, Msg: 57357
From: LeonardR
Date: 5/29/2002 05:25 PM

At 5:01 AM -0500 1/29/01, p-pdf-developer Listmanager wrote:
>1. If you get "invalid token" messages it means that your stream is
>wrong. It must exactly follow the format of the PostScript page
>stream operators.

Except that the "names" of the operators are those from PDF ;).

>2. If you want to add to the page stream, rather than replace it,
>you should use more Cos methods to manipulate the Contents object in
>the page stream.
>Bear in mind that modifying existing page streams is a complex
>business, even to add something apparently simple like a text stamp.

I completely agree with Aandi here!

You would be MUCH better off adding a new stream (remember
that a page can contain more than one stream) either before or after
the existing ones (depending on where you want your stuff to appear).

>For all these reasons, I'd recommend using PDFEdit for contents
>changes, even though I still use Cos Contents editing in my plug-ins
>- I have a LOT of code to deal with these situations.
If you really do need to MODIFY the content (change a word,
color, etc.) then I would agree with Aandi - use PDFEdit (assuming
you can - not all PDFLibraries support it ;). However, if you are
adding new streams, Cos is easier.

Leonard Rosenthol
Sr. Software Engineer (215) 922-3509 (voice)
Digital Applications (215) 440-0504 (fax)

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