Verzeichnislisting als Baumansicht in StringListe

[Luckie]

Also für die Dateien habe ich es schon mal hinbekommen:

Delphi-Quellcode:

procedure TDTListDir.FindFiles(RootFolder: AnsiString; Mask: AnsiString = '*.*'; Recurse: Boolean = True);
var
  SR: TSearchRec;
  i: Integer;
  Tab: AnsiString;
begin
  RootFolder := IncludeTrailingPathDelimiter(RootFolder);

  if Recurse then
    if FindFirst(RootFolder + '*.*', faAnyFile, SR) = 0 then
    try
      repeat
        if SR.Attr and faDirectory = faDirectory then
          if (SR.Name <> '.') and (SR.Name <> '..') then
          begin
            FindFiles(RootFolder + SR.Name, Mask, Recurse);
          end;
      until FindNext(SR) <> 0;
    finally
      FindClose(SR);
      Inc(FLevel);
    end;
  if FindFirst(RootFolder + Mask, faAnyFile, SR) = 0 then
  try
    for i := 0 to FLevel do
      Tab := Tab + '  ';
    repeat
      if SR.Attr and faDirectory <> faDirectory then
      begin
        sl.Add(Tab + SR.Name + Format('(%d, %s)',
        [SR.Size, FormatDateTime('yyyy-mm-dd hh:nn:ss', FileDateToDateTime(SR.Time))]));
      end;
    until FindNext(SR) <> 0;
  finally
    FindClose(SR);
  end;
end;

Nur bei den Ordnern hapert es noch. Wie bekomme ich das hin?