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From: sab@engr.uark.edu (Steven A. Breuer)
Newsgroups: comp.os.msdos.programmer
Subject: Re: Command.com and a message
Summary: getenv() & putenv()
Message-ID: <5648@uafhp.uark.edu>
Date: 5 Dec 90 18:48:10 GMT
References: <67560@unix.cis.pitt.edu>
Sender: netnews@uafhp.uark.edu
Lines: 17

In article <67560@unix.cis.pitt.edu>, kwgst@unix.cis.pitt.edu (Karol W Gieszczykiewicz) writes:
> 
> 	I know it's possible because WordPerfect does it. Every time
> 	one presses <enter>, after exiting to shell, a short message
> 	appears, telling the user to type "exit" to return to
> 	WP. I want to know how to chain in such a message. I don't
> 	mind creating a modified copy of command.com and then running
> 	it.
> 
    Look at the getenv() and putenv() functions.  Most MS-DOS C compilers
    should have these functions.  Use getenv() to get the prompt string.
    Then use putenv() to set the prompt to whatever you like.  Now execute
    COMMAND.COM with the desired parameters.  This only changes the prompt
    environment variable for your program - not its parent program.

    Steve Breuer
    sab@engr.uark.edu