Errorlevels

 BBS: Inland Empire Archive
Date: 07-24-92 (07:24)             Number: 179
From: BRENT ASHLEY                 Refer#: NONE
  To: JIM TANNER                    Recvd: NO  
Subj: Errorlevels                    Conf: (2) Quik_Bas

 > DECLARE SUB ExitWithErrorLevel ALIAS "_exit" (BYVAL ErrLvl%)
 > ExitWithErrorLevel 5

JT>How/Who determines the ErrorLevel number.  Is the 5 you
JT>have shown here one that you have setup or is it a DOS
JT>error?

You choose the number yourself.  Convention holds that 0 is
returned for no error, but beyond that, it's up to you.  For
instance, I wrote a program that looks for a string in a file.
You call it with INFILE FileName "String to find" and it returns
an errorlevel depending on what was found.  I chose the following
errorlevels:

0 = String found OK
1 = String not found
2 = File not found
3 = Error processing file

I could, however, have let 0 be "string not found" and returned
errorlevel 1 to 255 as the line number the string was found on if
I had decided that route.

  -----
  Brent
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