Quick view of PDF files implementation

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   Hello all,

I'm writing .NET program that allows user to view PDF files. Currently the code uses RenderPageToVariant() to retrieve each page content and display it. However this function works rather slow. Looking at existing PDF viewers I found that some of them are opening big PDF
files very quickly, especially FoxIt reader - it can open PDF of any size without delays and immediately scroll to any page of a document. Is there any way to implement this using Quick PDF library?

Regards,
Mick

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mikle74 Members Profile Find Members Posts Beginner Joined: 17 Jun 09 Location: UK Status: Offline Points: 9	Post Options Post Reply Quote mikle74 Report Post Thanks(0) Quote Reply Topic: Quick view of PDF files implementation Posted: 17 Jun 09 at 1:11AM
	Hello all, I'm writing .NET program that allows user to view PDF files. Currently the code uses RenderPageToVariant() to retrieve each page content and display it. However this function works rather slow. Looking at existing PDF viewers I found that some of them are opening big PDF files very quickly, especially FoxIt reader - it can open PDF of any size without delays and immediately scroll to any page of a document. Is there any way to implement this using Quick PDF library? Regards, Mick

DELBEKE Members Profile Find Members Posts Debenu Quick PDF Library Expert Joined: 31 Oct 05 Location: France Status: Offline Points: 151	Post Options Post Reply Quote DELBEKE Report Post Thanks(0) Quote Reply Posted: 17 Jun 09 at 8:03AM
	Hello and Welcome here Quick Pdf library load the whole pdf in memory. Big Pdfs can take a long time before been displayed. The Pdf spécifications give a way to show pages as soon as all informations of the first page are read. This concept is called "Linearised" Pdfs. Quick Pdf Library can read such PDF, but is not able to show the first page before the complete read of the PDF. Perhaps a new release ?