saving raw html source from TWEbbrowser

procedure TForm1.SaveHTMLSourceToFile(const FileName: string; WB: TWebBrowser);
var
PersistStream: IPersistStreamInit;
FileStream: TFileStream;
Stream: IStream;
SaveResult: HRESULT;
begin
PersistStream := WB.Document as IPersistStreamInit;
FileStream := TFileStream.Create(FileName, fmCreate);
try
Stream := TStreamAdapter.Create(FileStream, soReference) as IStream;
SaveResult := PersistStream.Save(Stream, True);
if FAILED(SaveResult) then
MessageBox(Handle, 'Fail to save HTML source', 'Error', 0);
finally
{ we are passing soReference in TStreamAdapter constructor,
it is our responsibility to destroy the TFileStream object. }
FileStream.Free;
end;
end;
pocedure TForm1.Button1Click(Sender: TObject);
begin
if SaveDialog1.Execute then
SaveHTMLSourceToFile(SaveDialog1.FileName, WebBrowser1);
end;