ContentStreamCount seems screwy

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   I've got a PDF document with 2 pages, for each page ContentStreamCount returns '2' but in each case Stream #1 is valid but Stream #2 is zero-length.  Is this expected behavior?  Has QuickPDF created a second content stream in case I want to write to it (or something)?
Thanks,
Chris

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cscooper Members Profile Find Members Posts Beginner Joined: 06 Apr 12 Location: Boulder, CO Status: Offline Points: 13	Post Options Post Reply Quote cscooper Report Post Thanks(0) Quote Reply Topic: ContentStreamCount seems screwy Posted: 07 Apr 12 at 1:51PM
	I've got a PDF document with 2 pages, for each page ContentStreamCount returns '2' but in each case Stream #1 is valid but Stream #2 is zero-length. Is this expected behavior? Has QuickPDF created a second content stream in case I want to write to it (or something)? Thanks, Chris

Ingo Members Profile Find Members Posts Moderator Group Joined: 29 Oct 05 Status: Offline Points: 3530	Post Options Post Reply Quote Ingo Report Post Thanks(0) Quote Reply Posted: 07 Apr 12 at 5:11PM
	Hi Chris! Perhaps it starts with 0 and not with 1 and you're counting starting with 1? Only an idea ... ;-) Your relevant code regarding this issue would be good to know. Cheers, Ingo

cscooper Members Profile Find Members Posts Beginner Joined: 06 Apr 12 Location: Boulder, CO Status: Offline Points: 13	Post Options Post Reply Quote cscooper Report Post Thanks(0) Quote Reply Posted: 07 Apr 12 at 8:44PM
	Good idea but I don't think that's it ... GetContentStreamCount() returns 2; SelectContentStream(0) and SelectContentStream(3) both fail; after SelectContentStream(1), GetContentStreamToString() returns a byte array that is 94090 bytes long; after SelectContentStream(2), GetContentStreamToString() returns a byte array that is 0 bytes long.

edvoigt Members Profile Find Members Posts Senior Member Joined: 26 Mar 11 Location: Berlin, Germany Status: Offline Points: 111	Post Options Post Reply Quote edvoigt Report Post Thanks(0) Quote Reply Posted: 08 Apr 12 at 10:23AM
	Hi, in QuickPDF I think all list are made as starting by 1. So SelectContentStream(0) has ever to fail. Where the empty contentstream comes, knows only the producer of the PDF (or not). But why not using CombineContentStreams before? So you have all pagecontent at once. What do you want to do with the stream? To manipulate it, you have to be very very familar with the PDF-specifications. Most it's better to let QuickPDF do this job. Cheers, Werner