OrdoPDFReader is an ActiveX component PDF viewer which lets you:

To view PDF file OrdoPDFReader uses PDFium.dll (licensed under BSD by Google / Foxit).
PDFium.dll must be in the same directory as the ActiveX component.

The component has no other dependency than PDFium.dll and the common VB6 files.

The sources of a draft version of this control are available here on VB-Forums

This component is distributed as freeware. You can download the SDK at freeware.ordoconcept.net/OrdoPDFReader.php

The SDK contains a VB6 example, redistributable installers