A context-sensitive introduction -- Event-driven programming -- Smalltalk and the Squeak environment -- C++ and Java commonalities and similarities -- Additional concepts from the C++ language -- Visual Studio and the Microsoft Foundation Classes -- Java and the Swing library -- C# and the common language infrastructure -- Python -- Appendix A. Event-driven project ideas -- Appendix B. Answers to odd-numbered exercises -- Appendix C. About the CD-ROM.