Visual C++ provides several ways to view and edit the COM interfaces defined for your projects. There are wizards to assist you in defining interfaces, and ClassView provides a graphical display of all interfaces in your projects. You can use ClassView to edit existing interfaces by adding methods, properties, and events. You can also to jump directly to interface code with ClassView. For ATL objects, you can use ClassView to implement interfaces and connection points for existing objects. And, you can easily add ATL objects to an MFC-based application.