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Quick PDF Library articles & project samples
Unit QuickPDFxxxx or FoxitPDFLibraryxxxx was compiled with a different version
Updated 16 May 2022
Sometimes when upgrading a Delphi project to a new version of Foxit Quick PDF Library you may encounter an error message like this:
Unit QuickPDFxxxx was compiled with a different version...
The most likely cause of this erro...
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FindFormFieldByTitle finds extra form field that doesn’t exist
Updated 16 May 2022
When calling the FindFormFieldByTitle it can sometimes find two fields with the same name. For example, in a PDF form there might be a form field with the title "Name_Of_Campaign". The PDF SDK will find that form field fine but it...
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Can I become an official reseller of Debenu products?
Updated 02 July 2013
Yes, we have two different programs that let our loyal customers share in the success of Debenu. The first option is our official reseller program, which is for large resellers who primarily sell to corporations, and the second op...
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PHP and Windows with the ActiveX edition of Foxit Quick PDF Library
Updated 16 May 2022
PHP developers can use the ActiveX edition of Foxit Quick PDF Library to add PDF functionality to their PHP websites running on the Windows operating system. Here's a quick guide on how to get up and running:
The first thing you'...
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How can I programmatically detect color PDF files versus black and white PDF files?
Updated 16 May 2022
One method is to render each page to an image file and then check each pixel for RGB values not equal to each other. If R=G=B for each pixel then it's a grayscale image.
This should allow you to determine if a PDF file is color or...
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How do I create an InstanceID in Foxit PDF Library Lite?
Updated 16 May 2022
Foxit Quick PDF Library Lite is an ActiveX and so does not require an Instance ID. The Instance ID is only required by the DLL edition of the commercial version of Foxit Quick PDF Library.
In addition, you do not need to...
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Several sample projects are provided with the download files for the Dylib edition of Foxit Quick PDF Library for Mac OS X. We recommend that you start your evaluation of Foxit Quick PDF Library on Mac using these sample proj...
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Programmatically render PDF files in Windows Forms with .NET and C#
Updated 16 May 2022
Foxit Quick PDF Library can render a PDF as an image so that you can place it in your .NET application. Sample code using C# is provided below.
private void Form1_Load(object sender, EventArgs e)
{
// Remember to initialize t...
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Foxit Quick PDF Library lets you add visual digital signatures to PDF files programmatically with a few simple lines of code. It lets you sign existing signature form fields or will automatically create a signature form field...
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