Change keys pressed in a TMemo

Problem/Question/Abstract:

When you insert an accented letter into a HTML it should be converted into an extended code for international use.
That will help everyone who will build an HTML editor.

Answer:

Just add this to your memo keypress event:

procedure TForm1.Memo1KeyPress(Sender: TObject; var Key: Char);
const
  UnSup =
    #171#187#193#225#194#226#198#230#192#197#229#195#227#196#228#199#231#162#169#20 +
    #233#202#234#200#232#203#235#205#237#206#238#204#236#207#239#60#209#241#211#243 +
    #212#244#210#242#216#248#213#245#214#246#34#174#223#218#250#219#251#217#249#220 +
    #252#255;
  Supported: array[0..61] of string =
  (
    '«', '»', 'Á', 'á',
    'Â', 'â', 'Æ', 'æ',
    'À', 'Å', 'å', 'Ã',
    'ã', 'Ä', 'ä', 'Ç',
    'ç', '¢', '©', 'É',
    'é', 'Ê', 'ê', 'È',
    'è', 'Ë', 'ë', 'Í',
    'í', 'Î', 'î', 'Ì',
    'ì', 'Ï', 'ï', '<',
    'Ñ', 'ñ', 'Ó', 'ó',
    'Ô', 'ô', 'Ò', 'ò',
    'Ø', 'ø', 'Õ', 'õ',
    'Ö', 'ö', '"', '®',
    'ß', 'Ú', 'ú', 'Û',
    'û', 'Ù', 'ù', 'Ü',
    'ü', 'ÿ'
    );
var
  P: Integer;
begin
  P := Pos(Key, UnSup);
  if (P > 0) then
  begin
    Memo1.SetSelTextBuf(PChar(Supported[P - 1]));
    Key := #0;
  end;
end;

Obviously this can be ported to every type of char substitution.

If you really use it I raccomend that you insert into the array all special symbols!