A Practical Guide to X Window Programming is a basic guide that takes readers step by step through developing applications using X-Windows. The book covers the Xt Intrinsics portion of the X-Window system in detail and discusses the MIT Athena and OSF/Motif Widget Sets that are used in many of the examples. Topics covered include C programming fundamentals, text handling using X, fonts, event handling in Xt, extending the Widget Sets (building on Field Editor Widget), designing and constructing an application, building menus, printing help, OSF/Motif (including the window arranger) and interclient communication. Three extensive appendices are included: Widgets, Classing, and Exported Functions; Quick Xt Reference Guide (X11R4); and Quick Guide to OSF/Motif Widgets. Any applications designer interested in developing applications with Xt will find this book a valuable and enlightening resource.