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The pages on this site contain documentation for very old MS-DOS software, purely for historical purposes. If you're looking for up-to-date documentation, particularly for programming, you should not rely on the information found here, as it will be woefully out of date.

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  Description:  Print Spooler     DOS 3 Only
 
  Submits a file to the print spooler, removes a file from the print
  spooler's queue of pending files, or obtains the status of the printer.
  The print spooler, which is contained in the file PRINT.COM, was first
  added to MS-DOS in version 2.0, but the application program interface
  to the spooler was not documented until MS-DOS version 3.
 
  Input                                   Output
  ═══════════════════════════════════     ════════════════════════════
  AH=01H                                  If function successful
  AL=subfunction                          Carry flag=clear
     00H=Get Installed State              and, if called with
     01H=Submit File to be Printed         AL=00H
     02H=Remove File from Print Queue     AL=print spooler state
     03H=Cancel All Files in Queue           00H if not installed,
     04H=Hold Print Jobs for Status               ok to install
          Read                               01H if not installed,
     05H=Release Hold                             not ok to install
  DS:DX=segment:offset of packet             FFH if installed
         (Subfunction 01H)                or, if called with AL=04H
       =segment:offset of ASCIIZ          DX=eror count
         pathname (Subfunction 02H)       DS:SI=segment:offset of
                                                 print queue file list
                                          If function unsuccessful
                                          Carry flag=set
                                          AX=error code
                                    -♦-