how to Silent printing PDF from SW macro?

I have a macro that saves SW drawing as PDF file in specificlocation based on file name, than it opens the PDF in acrobat so Ican print it (we do hard copies of PDF not SLDDRW)
To me this last step (opening PDF) is unnecessary so my questionis:

How do I print PDF form SW macro silently without use intervention?

Ps,
I'm not that good in VB so be detailed please

SolidworksApi macros