getchara.def

DEFINITION MODULE GetCharacter;

(*
  GET a single character from the terminal,
  without first setting the proper mode, ordinary non-GET mode is used
  wherein a RETURN is needed to input data.

  Use StartGet and StopGet to turn on and off single-character-mode.
*)
(* J. Andrea, May.18/92 - dos version *)
(* J. Andrea, 1985 *)
(* This code may be freely used and distributed, it may not be sold. *)

EXPORT QUALIFIED StartGet, StopGet, Get, GetNoWait;


  PROCEDURE Get( VAR ch :CHAR );
  (* return a single character, no Carriage-Return needed *)


  PROCEDURE GetNoWait( VAR ch :CHAR );
  (* return a single character, no Carriage-Return needed *)
  (* and don't wait till a character occurs, returns null character if there
   * is no character in the buffer *)


  PROCEDURE StartGet;
  (* Enter single character mode *)


  PROCEDURE StopGet;
  (* Exit single character mode *)
  (* And return to "carriage-return needed for input" mode *)

END GetCharacter.