Newly updated with over 150 pages of material on the latest Tcl extensions, "Tcl/Tk: A Developer's Guide" is a unique practical tutorial for professional programmers and beginners alike. Starting with a clear picture of the basics, "Tcl/Tk" covers the variety of tools in this "Swiss army knife" of programming languages, giving you the ability to enhance your programs, extend your application's capabilities, and become a more effective programmer. This updated edition covers all of the new features of version 8.6, including object-oriented programming and the creation of megawidgets, existing data structure implementations, themed widgets and virtual events. Extensive code snippets and online tutorials in various languages will give you a firm grasp on how to use the Tcl/Tk libraries and interpreters and, most importantly, on what constitutes an effective strategy for using Tcl/Tk. This title: includes the latest features of Tcl/Tk 8.6; covers Tcl development tools, popular extensions, and packages to allow developers to solve real-world problems with "Tcl/Tk" immediately; provides straightforward explanations for beginners and offers tips, style guidelines, and debugging techniques for advanced users; features a companion website includes Tcl/Tk tutorials, applications, distributions, and more tools.