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Tcl and the Tk Toolkit

2005/4/14镜像同步1 回复

John K. Ousterhout Computer Science Division Department of Electrical Engineering and Computer Sciences University of California Berkeley, CA 94720 Copyright . 1993 Addison-Wesley Publishing Company, Inc. All rights reserved. Duplication of this draft is permitted by individuals for personal use only. Any other form of duplication or reproduction requires prior written permission of the author or publisher. This statement must be easily visible on the first page of any reproduced copies. The publisher does not offer warranties in regard to this draft. 本书的开头部分介绍。 Introduction This book is about two packages called Tcl and Tk. Together they provide a programming system for developing and using graphical user interface (GUI) applications. Tcl stands for “tool command language” and is pronounced “tickle”; is a simple scripting language for controlling and extending applications. It provides generic programming facilities that are useful for a variety of applications, such as variables and loops and procedures. Furthermore, Tcl is embeddable: its interpreter is implemented as a library of C procedures that can easily be incorporated into applications, and each application can extend the core Tcl features with additional commands specific to that application. One of the most useful extensions to Tcl is Tk. It is a toolkit for the X Window System, and its name is pronounced “tee-kay”. Tk extends the core Tcl facilities with additional commands for building user interfaces, so that you can construct Motif user interfaces by writing Tcl scripts instead of C code. Like Tcl, Tk is implemented as a library of C procedures so it too can be used in many different applications. Individual applications can also extend the base Tk features with new user-interface widgets and geometry managers written in C.

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