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TSUNTM.INT
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1994-08-16
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{$B-,D-,F-,I+,N-,R-,S+,V+}
(*
Timo Salmi UNiT M
A Turbo Pascal unit of keyboad routines.
All rights reserved 16-Aug-94
This unit may be used and distributed freely for PRIVATE, NON-COMMERCIAL,
NON-INSTITUTIONAL purposes, provided it is not changed in any way, and
that a proper attribution is made. For ANY other usage, such as use in a
business enterprise or at a university, contact the author for the terms
of registration.
The units are under development. Comments and contacts are solicited. If
you have any questions, please do not hesitate to use electronic mail for
communication.
InterNet address: ts@uwasa.fi
The author shall not be liable to the user for any direct, indirect or
consequential loss arising from the use of, or inability to use, any unit,
program or file howsoever caused. No warranty is given that the units and
programs will work under all circumstances.
Timo Salmi
Professor of Accounting and Business Finance
Faculty of Accounting & Industrial Management; University of Vaasa
P.O. BOX 297, FIN-65101 Vaasa, Finland
*)
unit TSUNTM;
(* ======================================================================= *)
interface
(* ======================================================================= *)
uses Dos
{$IFDEF VER40}
,TSUNT45
{$ENDIF}
;
(* =======================================================================
Key routines with no Ctr needed
======================================================================= *)
(* As Turbo Pascal KeyPressed but does not require the Crt unit *)
function KEYPREFN : boolean;
(* As Turbo Pascal ReadKey but does not require the Crt unit *)
function READKEFN : char;
(* Enhanced keyboard ReadKey, no Ctr unit needed. Detects also F11 and F12,
and distinguishes between the numeric keypad and the gray keys.
Lower part of the word returns the first scan code, the higher part
the second, if applicable. *)
function RDENKEFN : word;
(* This function resembles the traditional Basic inkey function.
It returns the pressed character with no echo. Special chacarters
are returned in the usual paired manner (chr(0) + code).
If timelimit seconds is exceeded timeout becomes true (and a
chr(0) is returned by inkeyfn). *)
function INKEYFN (timelimit : real; var timeout : boolean) : char;
(* =======================================================================
More key routines with no Ctr needed, no key repeat
======================================================================= *)
(* Is the left shift key depressed *)
function LFSHFTFN : boolean;
(* Is the right shift key depressed *)
function RTSHFTFN : boolean;
(* Is the ctrl key depressed *)
function CTRLFN : boolean;
(* Is the left ctrl key depressed *)
function LFCTRLFN : boolean;
(* Is the right ctrl key depressed *)
function RTCTRLFN : boolean;
(* Is the alt key depressed *)
function ALTFN : boolean;
(* Is the left alt key depressed *)
function LFALTFN : boolean;
(* Is the right alt key depressed *)
function RTALTFN : boolean;
(* Is the SysRq key depressed *)
function SYSRQFN : boolean;
(* =======================================================================
Getting keyscan codes
======================================================================= *)
(* Every now and then a programmer need to find out the scan codes
of the keyboard keys. GETSCAN returns the scancode (and the ascii
value) of the key pressed. For an enhanced AT keyboard use
GETESCAN. *)
procedure GETSCAN (var scancode, character : byte);
(* Get scancode and ascii value of a key pressed for an enhanced
keyboard. To test the presence of an enhanced keyboard use
ISENHAFN from the TSUNTH unit *)
procedure GETESCAN (var scancode, character : byte);