Good morning dear podofo-community, I am quite new to Podofo, but In the last weeks I spend a lot of time with PDF generation. I found an error in the call "PdfVecObject" affecting the use of PdfStreamed documents in combination with XObjects.
Problem: I tried to put a PDF-Document inside my new PDF-document without any problems. But when I tried the same on the second page, the PDF document was corrupted. So I had a closer look at the PDF-structure generated by Podofo and I recognized, that there were two PDF-objects with the same Object-ID. But this only happened when I tried it with the PdfStreamedDocument. With the PdfMemDocument there was no problem. After all I found out that the error occurred because objects were deleted from the PdfVecObject-vector. When the method "PdfDocument::Append(..)" tried to append the objects from the second PDF-file, it starts with the wrong Object-number. This is because it uses the method "m_vecObjects.GetSize()"" but this methods returns the total number of current objects inside the vector, but when objects have been deleted before, not the sequential number will be returned (needed for a unique object-number). Inside the PdfVecObjects-the call must look like: unsigned int difference = static_cast<unsigned int>(m_vecObjects.GetObjectCount()) //__ CORRECT instead of: unsigned int difference = static_cast<unsigned int>(m_vecObjects.GetSize() + m_vecObjects.GetFreeObjects().size()); //__ WRONG This must be applied to following methods: PdfDocument::InsertExistingPageAt(...) PdfDocument::Append(...) PdfDocument::FillXObjectFromDocumentPage(...) Best regards Hendrik
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