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From: NORM%IONAACAD.BITNET@tecmtyvm.mty.itesm.mx ( Norman Walsh)
Newsgroups: comp.lang.pascal
Subject: Exists() revisited
Message-ID: <26028@adm.brl.mil>
Date: 15 Feb 91 14:10:29 GMT
Sender: news@adm.brl.mil
Lines: 17

>2.  the file is not found if it's a read-only file on a network
>    drive. This is because untyped files (and any other non-text files)
>    are opened in update mode by reset( .. ).
>
First, I agree wholeheartedly with Reino's assertion that trying to
open the file is not the best solution to the problem.  However, the
fact that Turbo Reset()s untyped files in r/w mode can be overridden
by setting the FileMode variable to 0.

   SaveMode := FileMode; {which is usually 3, by the way}
   FileMode := 0;
   Reset(F);
   FileMode := SaveMode;

The above code will open any file "F" in r/o mode.

                                                  ndw