另存通用版本

  AcDbDatabase* pDb = new AcDbDatabase(Adesk::kFalse);
  Acad::ErrorStatus es=pDb->readDwgFile(_T("C:\\1.dwg"));
  if(es!=Acad::eOk)
  {
   delete pDb;
  }

  acdbSaveAs2000(pDb, _T("C:\\11.dwg"));
  delete pDb;