Book excerpt: Sams Teach Yourself Visual Basic 6 in 21 Days, Professional Reference Edition adds to the already solid tutorial to provide a long lasting Visual Basic reference section. This 200-page section adds coverage of common control properties, methods, and events, and many other Visual Basic referential materials. Additional special Bonus Project sections will allow readers to apply what they have learned in practical real-world examples. After reading this book, the reader will be able to create ActiveX controls, use object linking and embedding (OLE), and write Visual Basic programs that support multiple document interface, and much more. This Professional Reference Edition will cover all current Service Packs as well as work-arounds for known problems in Visual Basic 6.