CASTING.TXT

Any type of data structure can be transmitted using SioPuts. For example,
the following function (see EASY_PGM.PAS) will transmit the 6 byte record
'Data' when the user types a '$'.

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procedure TEasy.KeyPress(Sender: TObject; var Key: Char);
type
  DataRecType = record
    Count  : WORD;
    Buffer : array[0..4] of Char;
  end;
var
  Code : Integer;
  Data : DataRecType;
  Ptr  : PChar;
begin
  if Key = '$' then
    begin
      Data.Count := 4;
      Data.Buffer[0] := 'A';
      Data.Buffer[1] := 'B';
      Data.Buffer[2] := 'C';
      Data.Buffer[3] := 'D';
      Ptr := Addr(Data);
      Code := SioPuts(Port,Ptr,8)
    end
  else Code := SioPutc(Port,Key)
end;
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