ss=font-tt>HRESULT</span></span> denoting failure, the exception <span class=machine><span class=font-tt>Com.Error</span></span> is raised with a
message describing the error. Successful <span class=machine><span class=font-tt>HRESULT</span></span> return values are
ignored. To make them available to Caml, <span class=machine><span class=font-tt>camlidl</span></span> defines the types
<span class=machine><span class=font-tt>HRESULT</span></span><span class=machine><span class=font-tt>_</span></span><span cl