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Dan Appleman has been developing applications for Microsoft™ Windows™ since its release in 1985. In 1991 he founded Desaware Inc., a California-based software company that focuses on the production of component software for Visual Basic. An experienced freelance writer, he is the author of Dan Appleman’s Developing COM/ActiveX Components with Visual Basic 6, Visual Basic Programmer’s Guide to the Win32 API, and How Computer Programming Works. This article and many others can be found on Desaware’s web site.