Book Image

Python GUI Programming with Tkinter, 2nd edition - Second Edition

By : Alan D. Moore
4.5 (2)
Book Image

Python GUI Programming with Tkinter, 2nd edition - Second Edition

4.5 (2)
By: Alan D. Moore

Overview of this book

Tkinter is widely used to build GUIs in Python due to its simplicity. In this book, you’ll discover Tkinter’s strengths and overcome its challenges as you learn to develop fully featured GUI applications. Python GUI Programming with Tkinter, Second Edition, will not only provide you with a working knowledge of the Tkinter GUI library, but also a valuable set of skills that will enable you to plan, implement, and maintain larger applications. You’ll build a full-blown data entry application from scratch, learning how to grow and improve your code in response to continually changing user and business needs. You’ll develop a practical understanding of tools and techniques used to manage this evolving codebase and go beyond the default Tkinter widget capabilities. You’ll implement version control and unit testing, separation of concerns through the MVC design pattern, and object-oriented programming to organize your code more cleanly. You’ll also gain experience with technologies often used in workplace applications, such as SQL databases, network services, and data visualization libraries. Finally, you’ll package your application for wider distribution and tackle the challenge of maintaining cross-platform compatibility.
Table of Contents (22 chapters)
19
Other Books You May Enjoy
20
Index
Appendices

Styling Ttk widgets

The final user requests we need to address involve the styles and colors of our Ttk widgets; users have asked for more visual distinction between the form sections, and more visibility for error messages.

After some thought and discussion, you decide to color-code the sections of the form as follows:

  • The Record Information section will use khaki, suggesting the classic manila folders used for paper records
  • The Environment Data section will use light blue, symbolic of water and air
  • The Plant Data will have a light green background, symbolic of plants
  • The Notes input is distinctive enough, so it will remain the same default gray

To improve the visibility of error messages, we'd like to make the background of the fields turn red when they have errors, and the error text itself display in a dark red color. To accomplish this, we're going to need to understand how to style Ttk widgets.

TTk styling breakdown

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