Path: utzoo!mnetor!uunet!husc6!linus!mbunix!jcmorris
From: jcmorris@mitre-bedford.ARPA (Joseph C. Morris)
Newsgroups: comp.sys.ibm.pc
Subject: Re: Bat file using ESC seq needs to find if DEVICE=ANSI.SYS was set
Message-ID: <28501@linus.UUCP>
Date: 7 Apr 88 14:22:51 GMT
References: <767@ms3.UUCP>
Sender: news@linus.UUCP
Reply-To: jcmorris@mbunix (Morris)
Organization: The MITRE Corporation, McLean, VA.
Lines: 20
Keywords: ansi.sys, Escape Sequences, errorlevel, find, grep, DOS, unix

In article <767@ms3.UUCP> msicv01@ms3.UUCP (Jay G. Heiser) writes:
>                       ...I need a way to test before using any ESC seq-
>uences whether or not the [ANSI.SYS] driver has been set.  How can I do that?

Try this from a program:

    Flush any waiting keyboard input
    characters.

    Write to screen:  <ESC>[6n           (Request cursor position report)

    Test to see if any characters 
    are waiting in the keyboard buffer

    If not, then ANSI.SYS (or an equivalent
    driver) is NOT present.

    Eat any waiting characters.

Good luck.