Как вывести список привилегий?

procedure TForm1.Button1Click(Sender: TObject);
const
  TokenSize = 800; //  (SizeOf(Pointer)=4 *200)
var
  hToken: THandle;
  pTokenInfo: PTOKENPRIVILEGES;
  ReturnLen: Cardinal;
  i: Integer;
  PrivName: PChar;
  DisplayName: PChar;
  NameSize: Cardinal;
  DisplSize: Cardinal;
  LangId: Cardinal;
begin
  GetMem(pTokenInfo, TokenSize);
  if not OpenProcessToken(GetCurrentProcess(), TOKEN_ADJUST_PRIVILEGES or TOKEN_QUERY,
    hToken) then ShowMessage('OpenProcessToken error');
  if not GetTokenInformation(hToken, TokenPrivileges, pTokenInfo, TokenSize, ReturnLen) then
    ShowMessage('GetTokenInformation error');
  GetMem(PrivName, 255);
  GetMem(DisplayName, 255);
  for i := 0 to pTokenInfo.PrivilegeCount - 1 do
  begin
    DisplSize := 255;
    NameSize  := 255;
    LookupPrivilegeName(nil, pTokenInfo.Privileges[i].Luid, PrivName, Namesize);
    LookupPrivilegeDisplayName(nil, PrivName, DisplayName, DisplSize, LangId);
    ListBox1.Items.Add(PrivName +^I + DisplayName);
  end;
  FreeMem(PrivName);
  FreeMem(DisplayName);
  FreeMem(pTokenInfo);
end;

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