renderpageto errors

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   Hello, I've a pdf with dozens of images in each page. When I call renderpagetostream to generate a jpg of the pages, sometimes one of the images is not rendered (is rendered as white). It's not allways the same image and not the same page. It seems that sometimes a GDI call fails. Is "renderpagetostream" checking every GDI function is calling? I'm using this functions in threads, in parallel rendering, so a lot of memory is used, but I'm compiling to x64.I've tried to use Cairo, but application crashes at first render.

Pdf with images:

http://91.121.176.59/book/objects_pdf.jpg

Rendered page:

http://91.121.176.59/book/flat_pdf.jpg

Thank you.

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jmontoya Members Profile Find Members Posts Beginner Joined: 21 Jul 10 Location: Barcelona Status: Offline Points: 14	Post Options Post Reply Quote jmontoya Report Post Thanks(0) Quote Reply Topic: renderpageto errors Posted: 23 Jul 13 at 9:44AM
	Hello, I've a pdf with dozens of images in each page. When I call renderpagetostream to generate a jpg of the pages, sometimes one of the images is not rendered (is rendered as white). It's not allways the same image and not the same page. It seems that sometimes a GDI call fails. Is "renderpagetostream" checking every GDI function is calling? I'm using this functions in threads, in parallel rendering, so a lot of memory is used, but I'm compiling to x64. I've tried to use Cairo, but application crashes at first render. Pdf with images: http://91.121.176.59/book/objects_pdf.jpg Rendered page: http://91.121.176.59/book/flat_pdf.jpg Thank you.

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: 30 Jul 13 at 11:59AM
	jmontoya, Which version of QPL are you using ? DLL Active X ? 8.16 or 9.xx ? C# or C ? Are you using a separate QPL instance for each thread ? Andrew.

jmontoya Members Profile Find Members Posts Beginner Joined: 21 Jul 10 Location: Barcelona Status: Offline Points: 14	Post Options Post Reply Quote jmontoya Report Post Thanks(0) Quote Reply Posted: 30 Jul 13 at 12:13PM
	Hello, I'm using 9.15 with Delphi xe4 x64. And yes, I'm using a separate instance in each thread.