BCB下如何改变CppWebBrowser的Html内容

void __fastcall TForm1::SetHtml( TCppWebBrowser *WebBrowser,AnsiString Html ){    IStream *Stream;    HGLOBAL hHTMLText;    IPersistStreamInit *psi;

    if( WebBrowser->Document == NULL )        return;    hHTMLText = GlobalAlloc( GPTR, Html.Length() + 1 );    if( 0 == hHTMLText ) {        ShowMessage( "GlobalAlloc Error" );        return;    }

    CopyMemory( hHTMLText, Html.c_str(), Html.Length() );

    OleCheck( CreateStreamOnHGlobal( hHTMLText, true, &Stream ) );

    try {        OleCheck( WebBrowser->Document->QueryInterface( __uuidof(IPersistStreamInit), (void **)&psi ) );        try {            OleCheck( psi->InitNew() );            OleCheck( psi->Load(Stream) );        } catch( ... ) {            delete psi;        }    } catch( ... ) {        delete Stream;    }    delete psi;    delete Stream;}