Usenet 1994 October/usenetsourcesnewsgroupsinfomagicoctober1994disk2.iso/misc/volume34/vms_rtl_kbd/part02/demo_kbd_routines.ada

Text File | 1992-12-19 | 6KB | 206 lines

------------------ Distribution and Copyright -----------------
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-- This software is copyright by the CENA/DGAC/FRANCE
-- All rights reserved.
--
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-- may be reproduced or utilized for commercial use in any form
-- without written permission of the copyright owner.
--
-- It may be reproduced or utilized for R&D use in Non Profit
-- Organization
--
---------------------------------------------------------------


------------------ Disclaimer ---------------------------------
--
-- This software and its documentation are provided "AS IS" and
-- without any expressed or implied warranties whatsoever.
-- No warranties as to performance, merchantability, or fitness
-- for a particular purpose exist.
--
-- Because of the diversity of conditions and hardware under
-- which this software may be used, no warranty of fitness for
-- a particular purpose is offered.  The user is advised to
-- test the software thoroughly before relying on it.  The user
-- must assume the entire risk and liability of using this
-- software.
--
-- In no event shall any person or organization of people be
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-------------------END-PROLOGUE--------------------------------




--*****************************************************************************
--*****************************************************************************
--**                                                                         **
--**               D E M O   D E S   R O U T I N E S   K B D $               **
--**                                                                         **
--******** Copyright (C) 1992 Centre d'Etudes de la Navigation Aerienne *******
--*****************************************************************************




-- ++
--
-- Titre:       DEMO DES ROUTINES KBD$
--
-- Sujet:       Programme de demonstration des routines KBD$.
--
-- Version:       1.0
--
-- Description:           Ce programme de demonstration met en oeuvre la fonction
--           KBD$READ_KEYSTROKE permettant d'attendre une action au
--           clavier et renvoyant la sequence ANSI correspondant a la
--           touche actionnee.
--
--               Lorsque le tampon est plein, l'utilisateur est prevenu
--                 par un beep sonore emit par le sous-programme d'IT.
--
--               Afin de pouvoir recuperer les codes emis par CTRL/C,
--                 CTRL/O, CTRL/Q, CTRL/S, CTRL/T, CTRL/X, CTRL/Y et F6, il est
--                 necessaire d'entrer la commande DCL "SET TERMINAL/PASTHRU
--                 /NOTTSYNC".
--
--                     Pour utiliser KBD$READ_KEYSTROKE, vous devez appeler au
--           prealable la fonction KBD$OPEN_KEYBOARD et terminer par
--           KBD$CLOSE_KEYBOARD.
--                 La routine KBD$OPEN_KEYBOARD permet, entre autres, de ne
--           creer la zone tampon que si l'on desire reellement utiliser
--                 KBD$READ_KEYSTROKE.
--
-- Langage:       ADA
--
-- Fichier:       DEMO_KBD_ROUTINES.ADA
--
-- Environnement:  Machine cible:          VAX
--           Systeme d'exploitation: VAX/VMS Version 5.4
--           Compilateur:            VAX Ada Version 2.1-28
--
-- Auteur:       Martin VICENTE (DGAC/CENA/SID)
--
--           E-mail: [e-mail]
--
--           Mail:   C.E.N.A.
--               Div. Support Informatique & Developpement
--               Orly Sud 205
--               94 542 ORLY AEROGARE CEDEX, FRANCE
--
-- Creation:       25/05/92
--
-- Modification:   25/05/92
--
-- --




with CONDITION_HANDLING;
with SYSTEM;
with LIB;
with KBD;
with TEXT_IO;

use CONDITION_HANDLING;
use SYSTEM;
use KBD;
use TEXT_IO;


procedure DEMO_KBD_ROUTINES is


    COND_VALUE : COND_VALUE_TYPE;
    YES        : BOOLEAN;
    I          : INTEGER;
    KEY        : T_ANSI_SEQUENCE;
    CODE       : UNSIGNED_WORD;


    procedure CHECK (COND_VALUE : in COND_VALUE_TYPE) is
    begin
        if not SUCCESS (COND_VALUE) then
        STOP (COND_VALUE);
        end if;
    end CHECK;


    package LOCAL_INTEGER_IO is new TEXT_IO.INTEGER_IO(INTEGER);
    use LOCAL_INTEGER_IO;


begin

    OPEN_KEYBOARD (COND_VALUE => COND_VALUE);
    CHECK (COND_VALUE => COND_VALUE);

    PUT_LINE ("Press a key.");

    loop
        KEY_PRESSED (COND_VALUE => COND_VALUE, YES => YES);
        CHECK (COND_VALUE => COND_VALUE);
    exit when YES;
    end loop;

    PUT_LINE ("Five loop...");

    for I in 1..5 loop
        PUT ("Programme principal (loop): ");
    PUT (I);
    NEW_LINE;
        LIB.WAIT (STATUS => COND_VALUE, SECONDS => 1.0);
        CHECK (COND_VALUE => COND_VALUE);
    end loop;

    PUT_LINE ("Five readkey...");

    for I in 1..5 loop
        PUT ("Programme principal (SMG code): ");
        READ_KEYSTROKE (COND_VALUE => COND_VALUE, KEY => KEY);
        CHECK (COND_VALUE => COND_VALUE);
        CVT_ANSI_SMG (SMG_CODE => CODE, SEQUENCE => KEY);
        PUT (natural (CODE));
    NEW_LINE;
    end loop;

    PUT_LINE ("Five loop...");

    for I in 1..5 loop
        PUT ("Programme principal (loop): ");
    PUT (I);
    NEW_LINE;
    delay 1.0;
--      LIB.WAIT (STATUS => COND_VALUE, SECONDS => 1.0);
--      CHECK (COND_VALUE => COND_VALUE);
    end loop;

    PUT_LINE ("Flush keyboard.");

    FLUSH_KEYBOARD (COND_VALUE => COND_VALUE);
    CHECK (COND_VALUE => COND_VALUE);

    PUT_LINE ("Five loop...");

    for I in 1..5 loop
        PUT ("Programme principal (loop): ");
    PUT (I);
    NEW_LINE;
    delay 1.0;
--      LIB.WAIT (STATUS => COND_VALUE, SECONDS => 1.0);
--      CHECK (COND_VALUE => COND_VALUE);
    end loop;

    PUT_LINE ("End");

    CLOSE_KEYBOARD (COND_VALUE => COND_VALUE);
    CHECK (COND_VALUE => COND_VALUE);

end DEMO_KBD_ROUTINES;