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Tcl/Tk in a Nutshell
The Tcl 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 one 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, the
chapters on these topics are organized by widget along with
a section of core commands where appropriate. Contents
include:
Core Tcl and Tk commands and Tk widgets
C interface (prototypes)
Expect
[incr Tcl] and [incr Tk]
Tix
TclX
BLT
Oratcl, SybTcl, and Tclodbc
Preface
Chapter 1. Introduction
What Is Tcl?
Structure of This Book
Chapter 2. Tcl Core Commands
Overview
Basic Language Features
Command-Line Options
Environment Variables
Special Variables
Backslash Substitutions
Operators and Math Functions
Regular Expressions
Pattern Globbing
Predefined I/O Channel Identifiers
Group Listing of Commands
Alphabetical Summary of Commands
Chapter 3. Tk Core Commands
Example
Command-Line Options
Environment Variable
Special Variables
Group Listing of Tk Commands
Widget Overview
Widget Commands
Utility Commands
Chapter 4. The Tcl C Interface
Constants
Data Types
Group Listing of Functions
Alphabetical Summary of Functions
Chapter 5. The Tk C Interface
Constants
Data Types
Group Listing of Functions
Alphabetical Summary of Functions
Chapter 6. Expect
Overview
Example
Command-Line Options
Environment Variables
Special Variables
Grouped Summary of Commands
Alphabetical Summary of Commands
Chapter 7. [incr Tcl]
Basic Class Definition
Special Variables
Group Listing of Commands
Example
Alphabetical Summary of Commands
Chapter 8. [incr Tk]
Basic Structure of a Mega-widget
Special Variable
Methods and Variables
Alphabetical Summary of Commands
Chapter 9. Tix
Tix Overview
Special Variables
Group Listing of Tix Commands
Tix Mega-widget Overview
Tix Mega-widgets
Tix Standard Widgets Overview
Tix Standard Widgets
Tix Core Commands
Tix Extensions to Tk image Command
Chapter 10. TclX
Special Variables
Group Listing of Commands
Alphabetical Summary of Commands
Chapter 11. BLT
Environment Variable
Special Variables
Group Listing of Commands
Alphabetical Summary of Commands
Chapter 12. Oratcl
Overview
Example
Environment Variables
Special Variables
Group Listing of Commands
Alphabetical Summary of Commands
Chapter 13. Sybtcl
Overview
Example
Environment Variables
Special Variables
Group Listing of Commands
Alphabetical Summary of Commands
Chapter 14. Tclodbc
Overview
Group Listing of Commands
Summary of Commands
Chapter 15. Hints and Tips for the Tcl Programmer
Think Commands, Not Statements
Comments Are Treated as Commands
A Symbolic Gesture
Lists Are Strings, but Not All Strings Are Lists
Indirect References
Executing Other Programs
When Is a Number Not a Number?
Quoting and More Quoting
Write Once, Run Where?
Common Tk Errors
Use the Source, Luke!
Appendix A. Tcl Resources
Index
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