Как выделить URL в TRichEdit?

{....}
 protected
  procedure WndProc(var Message: TMessage); override;
{....}

uses Richedit, ShellApi;
{Today I want to show how to implement URL highlighting and URL navigation
without any third-party components. This functionality is implemented in
RichEdit from Microsoft (and MS Outlook use this feature, for example) and
only Borland's developers didn't publish it for us.}

procedure TForm1.FormCreate(Sender: TObject);
var
 mask: Word;
begin
 mask := SendMessage(RichEdit1.Handle, EM_GETEVENTMASK, 0, 0);
 SendMessage(RichEdit1.Handle, EM_SETEVENTMASK, 0, mask or ENM_LINK);
 SendMessage(RichEdit1.Handle, EM_AUTOURLDETECT, Integer(True), 0);
 //Some text in RichEdit
 RichEdit1.Text := 'Scalabium Software'#13#10 +
  ' Site is located at <a href="http://www.scalabium.com" title="www.scalabium.com">www.scalabium.com</a>. Welcome to our site.';
end;
procedure TForm1.WndProc(var Message: TMessage);
var
 p: TENLink;
 strURL: string;
begin
 if (Message.Msg = WM_NOTIFY) then
 begin
  if (PNMHDR(Message.lParam).code = EN_LINK) then
  begin
  p := TENLink(Pointer(TWMNotify(Message).NMHdr)^);
  if (p.Msg = WM_LBUTTONDOWN) then
  begin
  SendMessage(RichEdit1.Handle, EM_EXSETSEL, 0, Longint(@(p.chrg)));
  strURL := RichEdit1.SelText;
  ShellExecute(Handle, 'open', PChar(strURL), 0, 0, SW_SHOWNORMAL);
  end
  end
 end;
 inherited;
end;

Взято с сайта http://www.swissdelphicenter.ch/en/tipsindex.php

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