Does PDFTron have a way of printing the pdfs it creates? If so, can
you select the printer and tray for the pdf to come out of?
You can use PDFNet SDK (www.pdftron.com/net) to print any PDF. As a
starting point for your project you may want to take a look at the
PDFNet provides only a function to print to a given device context (or
a given 'Graphics' object), and it is developers task to select the
target printer and relevant printer settings. This way developers have
full flexibility to select the printer and settings using different
APIs (e.g. via standard .NET or Win32 methods).