Debenu Quick PDF Library - PDF SDK Community Forum : RenderPageToString, generates a empty image page

RenderPageToString, generates a empty image page : Thank you, I updated to 7.26 and...

Fri, 13 Apr 2012 16:17:52 +0000

Author: cmedina
Subject: 2224
Posted: 13 Apr 12 at 4:17PM

Thank you, I updated to 7.26 and worked perfectly

RenderPageToString, generates a empty image page : You should try upgrading the to...

Fri, 13 Apr 2012 12:10:52 +0000

Author: AndrewC
Subject: 2224
Posted: 13 Apr 12 at 12:10PM

You should try upgrading the to 7.26 version as it includes lots of bug fixes and enhancements. It is a free upgrade for all 7.xx users and can be downloaded from

http://www.quickpdflibrary.com/downloads/binaries/qp/oldversions/0726/quick_pdf_library726.exe

If this doesn't work then you would need to send the PDF files to the official QPL support. There are many PDF files that are malformed and contain syntax errors. These PDF's do not follow the official PDF specification.

It is most likely these PDF files are molformed. It is possible we may be able to add a workaround to QPL to get it to load the files correctly.

Andrew.

RenderPageToString, generates a empty image page : Normal 0 ...

Wed, 11 Apr 2012 19:37:45 +0000

Author: cmedina
Subject: 2224
Posted: 11 Apr 12 at 7:37PM

Hi, I need help with this problem.
When I generate an image of a page using RenderPageToString,only with some specific PDF files which were generated by scan orfax a printed document, the result image is a blank jpg with the page’sdimensions. The content of all these files is a scanned image set as page’s Background.Think the RenderPageToString method ignores the content of the background.Let me know if there is a way to configure the render to not ignore thebackground.

This is mi wrapper implementation:

public byte[]RenderPageToString(int DPI, int Page, intOptions)

{

if (this.dll == null)

{

return new byte[0];

}

IntPtr source = this.dll.QuickPDFRenderPageToString(this.instanceID, DPI, Page, Options);

int length = this.dll.QuickPDFStringResultLength(this.instanceID);

byte[] destination = newbyte[length];

Marshal.Copy(source, destination, 0, length);

return destination;

}

I am using
C# in Visual Studio 2010
.Net Framework 4
QuickPDFDLL0718.dll