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MOREKEY.PAS
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Pascal/Delphi Source File
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1987-10-07
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3KB
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73 lines
PROGRAM More_Keys;
(* =============================================== *)
(* IN this example, the interrupt handler code *)
(* is completely contained in the UNIT called *)
(* "MOREKEYU". The unit's initialization part *)
(* installs the new interrupt, and its ExitProc *)
(* restores the original interrupt. This is *)
(* totally invisible to your program -- just *)
(* USE the unit and that's all! *)
(* =============================================== *)
USES Crt,Dos,morekeyU;
PROCEDURE Do_Demo;
VAR
CH, DH : Char;
BEGIN
ClrScr;
WriteLn('KEYBOARD INTERRUPT DEMO "More Keys"');
WriteLn('===================================');
WriteLn;
Write('Press various keys and combinations. ');
WriteLn('The <Alt> plus keypad combinations');
Write('now work as in Appendix K of the TURBO ');
WriteLn('3.0 manual. ALSO, the <Alt>+number');
Write('combinations are still available -- you ');
WriteLn('must press <Alt><LeftShift>+number.');
WriteLn('Hit <Esc> to end demo.');
WriteLn;
REPEAT
DH := #0;
CH := ReadKey;
IF (CH = #0) AND KeyPressed THEN
BEGIN
DH := ReadKey;
CASE DH OF
#174 : WriteLn('<Alt><Home>');
#175 : WriteLn('<Alt><Up>');
#176 : WriteLn('<Alt><PgUp>');
#177 : WriteLn('<Alt><GreyMinus>'); {*}
#178 : WriteLn('<Alt><Left>');
#179 : WriteLn('<Alt><Center>'); {*}
#180 : WriteLn('<Alt><Right>');
#181 : WriteLn('<Alt><GreyPlus>'); {*}
#182 : WriteLn('<Alt><End>');
#183 : WriteLn('<Alt><Down>');
#184 : WriteLn('<Alt><PgDn>');
#185 : WriteLn('<Alt><Ins>');
#186 : WriteLn('<Alt><Del>');
(* ================================== *)
(* NOTE: The three keys marked with a *)
(* {*} do NOT appear in the list in *)
(* Appendix K. However, the scan *)
(* codes are logical in relation to *)
(* those that do appear. *)
(* ================================== *)
END;
END
ELSE
CASE CH OF
#8 : Write(#8,' ',#8);
#13 : WriteLn;
#27 : ; {our QUIT signal}
ELSE Write(CH);
END;
UNTIL (CH = #27) AND (DH = #0);
{i.e., until you press <Esc> }
END;
BEGIN
Do_Demo; {show yer stuff!}
END.