miguel angel torres egea
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2026-05-23T16:52:31+00:00miguel angel torres egea
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https://miguelangel.torresegea.es/wiki/_media/wiki:dokuwiki-128.pngtext/html2023-12-22T11:20:26+00:00Anonymous (anonymous@undisclosed.example.com)Python Professional Course Series: GUI Programming
https://miguelangel.torresegea.es/wiki/info:cursos:pue:python-pcpp1:m3:1.1?rev=1703244026&do=diff
Python Professional Course Series: GUI Programming
What is GUI?
GUI is an acronym. Moreover, it’s a three-letter acronym, a representative of a well-known class of acronyms which plays a very important role in the IT industry. Okay, that’s enough jokes about TLA’s for one course, all the more thattext/html2023-12-23T18:49:05+00:00Anonymous (anonymous@undisclosed.example.com)1.3 Settling widgets in the window's interior
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1.3 Settling widgets in the window's interior
Settling widgets
A familiarity with the Button widget allows us to show you some ways of putting the widgets (not only the buttons) inside windows. There are more of them than just place(), which you learned about in the previous section. To be precise, there aretext/html2023-12-22T11:49:30+00:00Anonymous (anonymous@undisclosed.example.com)1.2 Let TkInter speak!
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1.2 Let TkInter speak!
Importing TkInter
As you already know, from Python's point of view TkInter is a package named tkinter. The package contains a bunch of functions, constants, classes, objects, and modules used to build GUI applications.
The GUItext/html2023-12-28T12:06:07+00:00Anonymous (anonymous@undisclosed.example.com)1.7 Visiting widgets’ properties
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1.7 Visiting widgets’ properties
Widget properties
As you already know, every widget has a set of properties, and the widget’s user is able to change them by modifying the widget’s appearance and behavior. We’ll show you how to manipulate properties and present a basic set of the most usable widget properties.text/html2023-12-28T19:51:18+00:00Anonymous (anonymous@undisclosed.example.com)2.3 A small lexicon of widgets - Part 3
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2.3 A small lexicon of widgets - Part 3
There are two remaining widgets we want to tell you about – the first one is just a widget, while the second is, in fact, a set of cooperating widgets.
The Entry widget not only presents a line of text, but is also able totext/html2023-12-28T20:35:30+00:00Anonymous (anonymous@undisclosed.example.com)2.5 Working with the Canvas
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2.5 Working with the Canvas
Canvas
Our last meeting is devoted to the Canvas – a widget that behaves like a... canvas. It’s a flat, rectangular surface that you can cover with drawings, text, frames, and other widgets. Please treat this story as a basic introduction to thetext/html2023-12-28T20:16:56+00:00Anonymous (anonymous@undisclosed.example.com)2.4 Shaping the main window and conversing with the user
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2.4 Shaping the main window and conversing with the user
The main window is a very specific construct, as its fate is shared among two masters: you (supported by tkinter) and your operating system. This means than you cannot manage the window like any other widget, as thetext/html2023-12-28T11:29:30+00:00Anonymous (anonymous@undisclosed.example.com)1.6 Events and how to handle them
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1.6 Events and how to handle them
Event handling
As you already know, events are the fuel which propel the application’s movements. All events come to the event manager, which is responsible for dispatching them to all the application components. This also means that some of the events may launch some of your callbacks, which makes you responsible for preparing the proper reactions to the user’s actions.text/html2023-12-28T19:09:39+00:00Anonymous (anonymous@undisclosed.example.com)2.1 A small lexicon of widgets - Part 1
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2.1 A small lexicon of widgets - Part 1
A small lexicon of widgets
Now we’re ready to present a systematized set of some of the tkinter widgets. We aren’t able to describe all of them, however – it would bloat our course to an unmanageable size. We’re convinced that our collection is large enough to make you familiar withtext/html2023-12-23T19:05:35+00:00Anonymous (anonymous@undisclosed.example.com)1.4 Coloring your widgets
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1.4 Coloring your widgets
Adding colors
Nearly everything you put inside your windows may be colored. Most widgets have dedicated properties to handle their colors and we will tell you about them while discussing the widgets themselves. Currently, the most important thing is getting to know how the colors are described intext/html2023-12-23T19:33:06+00:00Anonymous (anonymous@undisclosed.example.com)1.5 A simple GUI application
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1.5 A simple GUI application
Building a GUI application from scratch
Now we're going to build a very simple and rather useless GUI application. Does that sound weird? Maybe, but the application, when ready, will make you more accustomed to some tkintertext/html2023-12-28T18:48:25+00:00Anonymous (anonymous@undisclosed.example.com)1.9 Looking at variables
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1.9 Looking at variables
Variables
To implement some of its functions, Tkinter uses a very special kind of variable called an observable variable. This variable works like a regular variable (i.e., it’s able to store values which are accessible to the outside world) but there is something more – any change of the variable’s state can betext/html2023-12-28T18:35:52+00:00Anonymous (anonymous@undisclosed.example.com)1.8 Interacting with widget methods
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1.8 Interacting with widget methods
Widget methods
Widgets have methods – you’ve met some of them already. Now we’re going to show you a few more of them, and we’ll start with two which seem to be very specific. We can even say that the sense of their existence is very closely bound to the unique features oftext/html2023-12-28T19:24:08+00:00Anonymous (anonymous@undisclosed.example.com)2.2 A small lexicon of widgets - Part 2
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2.2 A small lexicon of widgets - Part 2
Non-clickable widgets
The next four widgets fall into the non-clickable category. They’re designed to present textual information and don’t have a command property, although you can use bind() to simulate similar behavior.