IWebBrowser, Streams and refresh

I have a code, that displays some data via memory stream in to IWebBrowser2, but after browser made a Refresh2(), or Refresh(), I have an empty window, for example, it's happends when user want to change a codepage of IHTMLDocument via usual popup menu or wher I call a Refresh() or Refresh2() methods. I think, that I must handle some message, or overload some method, but which of them? May be somebody know the way? :confused:
In the code: WB - instance of Borland wrapper on IWebBrowser2
Code:

Code:

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TMemoryStream *stm = new TMemoryStream();
  ((TBlobField *)DM->MesHtm->FieldByName("CONTAINMENT"))->SaveToStream(stm);
  IPersistStreamInit *psi;
  stm->Seek(0,0);
  TStreamAdapter *sa = new TStreamAdapter(stm,soReference);
  if (!WB->Document)
    WB->Navigate(Variant("about:blank"));
  IHTMLDocument2 *Doc;
  if (SUCCEEDED(WB->Document->QueryInterface(IID_IHTMLDocument2,(void **)&Doc)))
    {
    if (SUCCEEDED(Doc->QueryInterface(IID_IPersistStreamInit,(void **)&psi)))
      {
      psi->Load(*sa);
      psi->Release();
      }
    Doc->Release();
    }

  delete stm;

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