Int 2F Fn 0106  - Dos 3.3+ Print - 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 (see #1332)
   CF clear if print queue empty
       AX = 0000h
Desc:  determine which device, if any, PRINT is currently using for output

Notes: undocumented prior to the release of MS-DOS 5.0
   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