The world's #1 guide to Tcl/Tk has been updated to reflect Tcl/Tk 8.4's powerful improvements in functionality, flexibility, and performance. Brent Welch, Ken Jones, and Jeffrey Hobbs, three of the world's leading Tcl/Tk experts, cover every facet of Tcl/Tk programming, including cross-platform scripting and GUI development, networking, enterprise application integration, and much more.<BR>Coverage includes: systematic explanations and sample code for all Tcl/Tk 8.4 core commands; complete Tk GUI development guidance - perfect for developers working with Perl, Python, or Ruby; insider's insights into Tcl 8.4's key enhancements - VFS layer, internationalized font/character set support, new widgets, and more; definitive coverage of TclHttpd web server (written by its creator); new ways to leverage Tcl/Tk 8.4's major performance improvements; and advanced coverage - threading, Safe Tcl, Tcl script library, regular expressions, and namespaces.<BR>Whether you're upgrading to Tcl/Tk 8.4, or building GUIs for applications created with other languages or just searching for a better cross-platform scripting solution, Practical Programming in Tcl and Tk, Fourth Edition delivers all you need to get results.