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function GetSpecialFolder(iGUID: integer): string;
var
  shellMalloc : IMalloc;
  ppidl       : PItemIdList;
begin
  ppidl := nil;
  try
    if SHGetMalloc(shellMalloc) = NOERROR then
    begin
      SHGetSpecialFolderLocation(Form1.Handle, iGUID, ppidl);
      SetLength(Result, MAX_PATH);
      if not SHGetPathFromIDList(ppidl, PChar(Result)) then
        raise exception.create('SHGetPathFromIDList failed : invalid pidl');
      SetLength(Result, lStrLen(PChar(Result)));
    end;
  finally
   if ppidl <> nil then
         shellMalloc.free(ppidl);
  end;
end;


procedure TForm1.FormCreate(Sender: TObject);
begin
Edit1.Text:=(GetSpecialFolder(CSIDL_DESKTOP));
end;                    

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%homepath%                    

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%homepath%\..