tailieunhanh - TCL/TK IN A NUTSHELL

This book is about Tcl, the scripting language developed by John Ousterhout. Tcl stands for tool command language and was originally designed as a simple scripting language interpreter that could be embedded inside applications written in the C language. With the addition of the Tk graphical toolkit and a host of other language extensions supporting such features as graphics, relational databases, and object-oriented programming, Tcl has become a popular programming language for developing applications in its own right. The freely available Tcl language interpr eter runs on many computer platforms, including most Unix-compatible systems, Microsoft Windows, and Apple Macintosh | TCL TK IN A NUTSHELL A Desktop Quick Reference O REILLY Paul Raines Jeff Tranter UNIX Programming TCL TK IN A NUTSHELL The Tel language and Tk graphical toolkit are simple and powerful building blocks for custom applications. The Tcl Tk combination is increasingly popular because it lets you produce sophisticated graphical interfaces with a few easy commands develop and ------------ change scripts quickly and conveniently tie together existing utilities or programming libraries. One of the attractive features of Tcl Tk is the wide variety of commands many offering a wealth of options. Most of the things you d like to do have been anticipated by the language s creator John Ousterhout or byone of the developers of Tcl Tk s many powerful extensions. Thus you ll find that a command or option probably exists to provide just what you need. And that s why it s valuable to have a quick reference that briefly describes every command and option in the core Tcl Tk distribution as well as the most popular extensions. Keep this book on your desk as you write scripts and you ll be able to find almost instantly the particular option you need. Most chapters consist of alphabetical listings. Since Tk and mega-widget packages break down commands by widget chapters on these topics are organized by widget along with a section of core commands where appropriate. Contents include Core Tel and Tk commands and Tk widgets c interface prototypes Expect incr Tel and incr Tk Tix TclX BLT Oratcl Sybtcl and Tclodbc O REILLY US CAN ISBN 978-1-56592-433-8 TCL TK IN A NUTSHELL A Desktop Quick .