Can't render a text only pdf created w/ghostscript

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   Howdy,

I am using the sample code from the Knowledge Base article, "Programmatically render PDF files in Windows Forms with .Net and C# to view pdfs in a windows form app.  Pdfs that were created via scanning are rendered as expected.  However, some of our pdfs are text reports that were printed to a windows printer driver that uses Redmon to essentially pipe the text stream into ghostscript to produce the pdf. The resulting image produced by RenderPageToDC for these types of pdf files is always blank.  RenderPageToDC returns a success exit code.  I am using v8.16 x64 of the quickpdf library.  I suspect that RenderPageToDC only works on the image of a page and ignores the text.  If true, maybe what I need to do is somehow convert the text to an image.

Thanks for your help.

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hrdyr00 Members Profile Find Members Posts Beginner Joined: 01 Aug 11 Location: CT Status: Offline Points: 2	Post Options Post Reply Quote hrdyr00 Report Post Thanks(0) Quote Reply Topic: Can't render a text only pdf created w/ghostscript Posted: 13 Jun 13 at 2:13PM
	Howdy, I am using the sample code from the Knowledge Base article, "Programmatically render PDF files in Windows Forms with .Net and C# to view pdfs in a windows form app. Pdfs that were created via scanning are rendered as expected. However, some of our pdfs are text reports that were printed to a windows printer driver that uses Redmon to essentially pipe the text stream into ghostscript to produce the pdf. The resulting image produced by RenderPageToDC for these types of pdf files is always blank. RenderPageToDC returns a success exit code. I am using v8.16 x64 of the quickpdf library. I suspect that RenderPageToDC only works on the image of a page and ignores the text. If true, maybe what I need to do is somehow convert the text to an image. Thanks for your help.

AndrewC Members Profile Find Members Posts Moderator Group Joined: 08 Dec 10 Location: Geelong, Aust Status: Offline Points: 841	Post Options Post Reply Quote AndrewC Report Post Thanks(0) Quote Reply Posted: 14 Jun 13 at 2:55AM
	You may need to send us the PDF file as it could be crashing halfway through the rendering process. There are many malformed PDF files in the wild that will even crash Acrobat. Please create a support ticket at http://www.debenu.com/support/contact/ Andrew.

hrdyr00 Members Profile Find Members Posts Beginner Joined: 01 Aug 11 Location: CT Status: Offline Points: 2	Post Options Post Reply Quote hrdyr00 Report Post Thanks(0) Quote Reply Posted: 17 Jun 13 at 7:10PM
	Thanks for your help. I just created a support ticket. Ray

AndrewC Members Profile Find Members Posts Moderator Group Joined: 08 Dec 10 Location: Geelong, Aust Status: Offline Points: 841	Post Options Post Reply Quote AndrewC Report Post Thanks(0) Quote Reply Posted: 20 Jun 13 at 4:36AM
	Ray, The problem was related to a 64 bit zlib compression bug in QPL that has now been fixed and the PDF is rendering with 9.15 beta 3 due to be released soon. Andrew.