// Brad Martinez, http://www.mvps.org

[
//  local,
//  object,
  uuid(00000000-0000-0000-C000-000000000046),
//  pointer_default(unique)
  odl
]

interface IUnknown
{
//    typedef [unique] IUnknown *LPUNKNOWN;
    typedef IUnknown *LPUNKNOWN;

    long  QueryInterface(
    [in] REFIID riid,
    [out] void  *ppvObject);   // **ppvObject

    ULONG AddRef();

    ULONG Release();
}