You can add "hidden" content in the info dictionary or in the catalog or
in a number of other places. It all depends on what you want to keep and
the level of "survivability" of the content if the PDF is transformed.
Paulo
> -----Original Message-----
> From: [EMAIL PROTECTED]
> [mailto:[EMAIL PROTECTED] On
> Behalf Of Sascha Fuchs
> Sent: Tuesday, February 27, 2007 4:43 PM
> To: [email protected]
> Subject: [iText-questions] Remove a text which has been added
> PdfContentByteover =stamp.getOverContent(actualPage) ->
> over.beginText().... over.endText()
>
> Hello
>
> I have the ungrateful job to develop an application which is able to
> remove self-made "annotations". My idea was to store the annotation
> data/content additional in the document info area (with
> stamp.setMoreInfo(...)) and then to compare Pdf-Objects with this
> additional data.
> Originally I used the hard, dirty way with adding annotation in
> appending mode (with no compression), make an "identifier" with an
> unused named layer and removed from EOF to EOF if containing my layer
> name. This doesn't work if integrity is added; because that procedure
> merges all by EOF divided "sections" to one.
>
> I found the FAQ solution (from Paulo Soares) to replace
> images in PDFs (
> http://itext.ugent.be/library/question.php?id=66 ) and
> modified the Java
> source code for toggling object trees with my Eclipse Debugger. But I
> couldn't find the objects containing "my" data.
>
> Any ideas, how to solve my problem?
>
> Thanks in advance
> Sascha
>
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