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From: "David C. Hoos, Sr." <david.c.hoos.sr@ada95.com>
Subject: Re: Using Get_Immediate to read keystrokes.
Date: 1998/08/26
Message-ID: <6s1615$20k@hacgate2.hac.com>#1/1
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References: <98082016293577@psavax.pwfl.com>
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Organization: Hughes Aircraft Company
Newsgroups: comp.lang.ada
Date: 1998-08-26T00:00:00+00:00
List-Id: <comp.lang.ada>


Marin David Condic, 561.796.8997, M/S 731-96 wrote in message
<98082016293577@psavax.pwfl.com>...
>    So I got a request from a user to improve the behavior of a little
>    command line oriented application. Currently the application uses
>    Ada.Text_IO.Get_Line to read in commands. The user wants to use
>    the up-arrow key to recover previous commands.
>
I see no evidence that this hasd been answered, so I'll tell you how I do
it.

I use Ada subprograms pragma-interfaced (is that a word?) to the tcgetattr
and tcsetattr functions.  If memory serves me correctly, I have three
subprograms, viz.:

One is Set_Echo_Mode with an enumeration parameter (On, Off), and the other
two are called Save_Console_State and Restore_Console_State.

I got the Idea to use these functions from reading the a-sysdep.c file in
the gnat distribution.

Hope this helps,

David C. Hoos, Sr.