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Topic: Re: compare current version to a signed version (Via Email)
Conf: (P-PDF) Developers, Msg: 103036
From: LeonardR
Date: 12/30/2003 07:45 AM

At 5:49 AM +1100 12/30/03, p-pdf-developers Listmanager wrote:
>I want to compare current version versus a signed version through
>API in my plug-in, how can it be done?

Once a document is signed, all changes to it (that do not
invalidate the signature) are stored in the update tables of the
document (ie. secondary xrefs and their referenced objects). Just
look there...

How would you reference this from the API? You would want to
look at EVERY object (try the PDF consultant APIs) and check the
generation. Any generation other than 0 is from an update table.


Leonard
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Leonard Rosenthol
Chief Technical Officer
PDF Sages, Inc. 215-629-3700 (voice)
215-629-0789 (fax)


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