Re: Need help checking fi

 BBS: Inland Empire Archive
Date: 09-02-92 (19:51)             Number: 89
From: BOB PERKINS                  Refer#: NONE
  To: TRENT SHIRLEY                 Recvd: NO  
Subj: Re: Need help checking fi      Conf: (2) Quik_Bas

 TS> I need suggestions on how to check for the existance of a
 TS> file from Quick Basic 4.5

  Using an interrupt call is the safest/easiest way I know.
 Be sure to start QB with "/L".

  Try this:

  '$INCLUDE: 'qb.bi'
  DECLARE FUNCTION Exist% (filename$)
  test% = Exist%("test.txt")
  IF test% THEN PRINT "File does not exist" ELSE PRINT "File exists."


  FUNCTION Exist% (filename$)
   testname$ = filename$ + CHR$(0)
   DIM Regs AS RegType
   Regs.ax = &H4E00
   Regs.cx = 0
   Regs.dx = SADD(testname$)
   INTERRUPT &H21, Regs, Regs
   Exist% = Regs.flags AND 1
  END FUNCTION



--- Msg V4.5
 * Origin: Reciprocity Failure  (1:124/4115.236)