STDAPI DllRegisterServer(void)
{

    CRegKey reg;
    LONG    lRet;

    lRet = reg.Open(HKEY_LOCAL_MACHINE,
        _T("Software\Microsoft\Windows\CurrentVersion\Shell Extensions\Approved"),
        KEY_SET_VALUE);

    if (ERROR_SUCCESS != lRet)
        return E_ACCESSDENIED;


    //GUID test = "{5E2121EE-0300-11D4-8D3B-444553540000}";
    lRet = reg.SetStringValue(_T("SimpleShlExt extension"),
        _T("{D8E5AF9C-B8C9-4C00-80DB-C86C63A53C59}"));

    if (ERROR_SUCCESS != lRet)
        return E_ACCESSDENIED;

// registers object, typelib and all interfaces in typelib
HRESULT hr = _AtlModule.DllRegisterServer();
    return hr;
}

HKCR
{
    NoRemove CLSID
    {
        ForceRemove {E8FF2944-BB49-46CD-AEBA-7E6A8C8AAE5A} = s 'SimpleShlExt Class'
        {
            ForceRemove Programmable
            InprocServer32 = s '%MODULE%'
            {
                val ThreadingModel = s 'Apartment'
            }
            TypeLib = s '{D8E5AF9C-B8C9-4C00-80DB-C86C63A53C59}'
            Version = s '1.0'
        }
    }
    NoRemove txtfile
  {
    NoRemove ShellEx
    {
      NoRemove ContextMenuHandlers
      {
        ForceRemove SimpleShlExt = s '{D8E5AF9C-B8C9-4C00-80DB-C86C63A53C59}'
      }
    }
  }
}