Quick PDF Library is an interesting library that includes hundreds of API functions to be called on from ASP, ActiveX, VB, VB Script, C++, C#, Delphi, etc.
The majority of the functions in Quick PDF Library are for working on PDF files, and they let you, from these programming languages, create PDF files, fragment them, encrypt them, modify them, edit them, etc. There is even the posssibility, always from code, to add JPG, BMP, TIFF or EMF images to a PDF.
Other great functions that, thanks to Quick PDF Library, you can apply to a PDF is the ability to clone pages, add new pages, rotate text, add hyperlinks, insert circle and arrow drawings, etc.