Book Image

Tcl/Tk 8.5 Programming Cookbook

Book Image

Tcl/Tk 8.5 Programming Cookbook

Overview of this book

With Tcl/Tk, you can create full-featured cross-platform applications in a simple and easy-to-understand way without any expensive development package; the only tools required are a simple text editor and your imagination. This practical cookbook will help you to efficiently interact with editors, debuggers, and shell type interactive programs using Tcl/Tk 8. This cookbook will comprehensively guide you through practical implementation of Tcl/Tk 8.5 commands and tools. This book will take you through all the steps needed to become a productive programmer in Tcl/Tk 8. Right from guiding you through the basics to creating a stand-alone application, it provides complete explanation of all the steps along with handy tips and tricks. The book begins with an introduction to the Tcl shell, syntax, variables, and programming best practices in the language. It then explores procedures and the flow of events with control constructs followed by advanced error trapping and recovery. From Chapter 4, a detailed study of string expressions and handling enables you to handle various string functions and use lists to expand the string functionality. The book then discusses in-depth the Tcl Dictionary and how to utilize it to store and retrieve data. File operations and Tk GUI handling are covered extensively along with a developing a real-world address book application to practice the concepts learned.
Table of Contents (20 chapters)
Tcl/Tk 8.5 Programming Cookbook
About the Author
About the Reviewers

Chapter 10. Geometry Management

In this chapter, we will cover the following topics:

  • Controlling layout with the pack command

  • Controlling layout with the grid command

  • Combining pack and grid

  • Creating an address book interface


For the purpose of this chapter the term geometry management refers to the layout and the design of the interface and not the wm command. The GUI is your primary method of interacting with the end user and, as such, is your opportunity to make a good first impression.

Although the specifics of GUI design are not directly covered in this chapter, we need to keep in mind that a poorly designed and executed interface may not only result in frustration for the end user, but also may actually result in the end user looking elsewhere for a solution.

I am sure that you have seen interfaces with bizarre combinations of colors. While they may be the developer's favorite colors in the world, they are not necessarily the best choice for an application. Add in a poor selection...