PDFium-Control
A COM/ActiveX object used to display documents in windows apps
This control allows the display of documents in your system with just about a single line of code.
The control allows absolute precision to determine locations on the displayed PDF (for example, where on the page, in PDF units, is the mouse at a given point in time).
It grew out of the need to replace Adobe Reader as the PDF document renderer in CursiVision and provides the exact location(s) so CursiVision (and other software ?) can make precise coordinate transformations.