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Tkinter GUI Application Development Cookbook

You're reading from   Tkinter GUI Application Development Cookbook A practical solution to your GUI development problems with Python and Tkinter

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Product type Paperback
Published in Mar 2018
Publisher Packt
ISBN-13 9781788622301
Length 242 pages
Edition 1st Edition
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Author (1):
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Alejandro Rodas de Paz Alejandro Rodas de Paz
Author Profile Icon Alejandro Rodas de Paz
Alejandro Rodas de Paz
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Table of Contents (10) Chapters Close

Preface 1. Getting Started with Tkinter FREE CHAPTER 2. Window Layout 3. Customizing Widgets 4. Dialogs and Menus 5. Object-Oriented Programming and MVC 6. Asynchronous Programming 7. Canvas and Graphics 8. Themed Widgets 9. Other Books You May Enjoy

Canceling scheduled actions

Tkinter's scheduling mechanism not only provides methods to delay callback executions, but also to cancel them if they have not been executed yet. Consider an operation that may take too much time to complete, so we want to let users to stop it by pressing a button or closing the application.

Getting ready

We will take the example from the first recipe and add a Stop button to allow us to cancel the scheduled action.

This button will be enabled only while the action is scheduled, which means that once you click on the left button, the user can wait for 5 seconds, or click on the Stop button to immediately enable it again:

...
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