layered pdf + layered pdf = non-layered pdf

[Axel Rose <axel (at) roeslein.de>]

Hello all,

I'd like to concatenate two or more fixed input PDF files containing layers
into a new one with layers retained.

When I use the currently available example code from:

http://itextdocs.lowagie.com/examples/com/lowagie/examples/general/copystamp/Concatenate.java

layers are lost in the output PDF.

In general iText is capable of generating layers though, see here:

http://itextdocs.lowagie.com/examples/com/lowagie/examples/objects/bookmarks/Layers.java

Was anybody able to solve this problem? After browsing the mailing list
archives and sample code for a while I couldn't find a solution. Is this so
because iText is unable to analyze layers when reading a PDF file?


Thanks for any help,
Axel.



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