command line tool for print picture?

Question

My program need to print a curve, my solution is changing the curve into a picture, and this picture file (xxx.png) can be printed by using the default windows picture print

Answer 1

rundll32 C:\WINDOWS\system32\shimgvw.dll,ImageView_PrintTo "c:\mydir\my.bmp" "Fictional HP Printer"

This prints an image file (.png in my case) to a specified printer WITHOUT a dialog box popping up. Also... works without elevated command prompt privileges.