Int 2F Fn 0106  - DOS 3.3+ Print.com - Get Printer Device                  [c]

   AX = 0106h

Return: CF set if files in print queue
       AX = error code 0008h (queue full)
       DS:SI -> device driver header
   CF clear if print queue empty
       AX = 0000h
Desc:  determine which device, if any, PRINT is currently using for output

Notes: documented for DOS 5+, but not documented for prior versions
   this function can be used to allow a program to avoid printing to the
     printer on which PRINT is currently performing output

See Also: AX=0104h