dvlv/tkinter-by-example

Learn Tkinter By Example - a free book

Learn Tkinter By Example

Learn Tkinter By Example - a free book for learning tkinter, complete with full source code.

Get the book here

Mobile formats (mobi and epub) are now available in the assets folder. However, I would recommend using FBReader with the PDF version where possible.

What's This Book About?

This book walks you through 7 full-featured applications built with Python and Tkinter. Each application will teach you different aspects of Tkinter which you can use for your own projects. Screenshots, source code and full explanations are included with each app.

The book assumes little-to-no experience with tkinter but will require some basic knowledge of the Python language.

Full source code of each application is available in the Code folder of this repository. The Latex source of the book itself is in the assets folder.

Legal Stuff

The Book

This book is licensed under Creative Commons Attribution-NoDerivs (CC BY-ND)

https://creativecommons.org/licenses/by-nd/4.0/

You are free to download this book as many times as you want and you are encouraged to share it with anyone and everyone who may benefit from it.

You are free to translate this book into another language if you wish.

If you wish to compile the Latex source into another format you may do so. If you then wish to redistribute this new format please submit it as a pull request here.

The Python Code

This source code is licensed under the MIT Licence

https://opensource.org/licenses/MIT

You are free to download, modify, use, and re-distribute this code as you see fit.

tkinter-by-example's Issues

Tablet friendly formats

Could we get a tablet-friendly PDF with narrow borders, and/or epub / mobi formats for e-readers? Eloquentjavascript.net has some good examples near the bottom of the home page, with their github page located here.

Short appendix on scientific plotting in tkinter

I have a tkinter application on github for curve fitting and surface fitting with matplotlib, the url on github is https://github.com/zunzun/tkInterFit - you might look it over and see if you want to use anything in your book. The matplotlib 3D surface plots are mouse-rotatable and look really cool embedded in tkinter applications.

James

Qw

`place` coordinates confusion: 300 vs. 500

Tkinter-By-Example/assets/Tkinter-By-Example.tex

Line 1326 in 3ba79e8

To put a widget at (100, 300) within a window, use \lstinline[columns=fixed]{widget.place(x=100, y=500)}. Alternatively, you can use \lstinline[columns=fixed]{relx} and \lstinline[columns=fixed]{rely} to \lstinline[columns=fixed]{place} a widget relative to its parent. \lstinline[columns=fixed]{relx=0.5, rely=0.5, anchor=tk.CENTER} will keep a widget completely central in its parent.

The text and the code example seem to contradict each other, with the Y coordinate being 300 and 500, respectively

(Chapter 2-1)The actual size of the window created is not the required size when invoking geometry

In Chapter 2-1 the statement of self.geometry("300x400") created a window with the size of 300x400 in pixel.
But when I capture a snap screen and check it in mspaint, the actual window size is around 376x500, how to create a window with fixed size?

My platform is windows 10 64bit Home version, Python 3.7.4, Tkinter version 8.6.

Text index positioning - x.y vs line.column

To my understanding, Tkinter's Text index syntax is "line.column" - e.g. "3.2" stands for line 3, column 2.

1. See first source - effbot:

line/column indexes are the basic index type. They are given as strings consisting of a line number and column number, separated by a period. Line numbers start at 1, while column numbers start at 0, like Python sequence indexes. You can construct indexes using the following syntax:

"%d.%d" % (line, column)

2. See also Text widget indices:

An index is a general method of specifying a position in the content of a text widget. An index is a string with one of these forms:

'line.column'
The position just before the given column (counting from zero) on the given line (counting from one). Examples: '1.0' is the position of the beginning of the text; '2.3' is the position before the fourth character of the second line.

---

However, in Chapter/Para 6.13 of Tkinter by Example, you wrote:

We begin by grabbing the current index of the cursor with index(tk.INSERT) . This is returned in a string of the format "x.y". For example, the first character of the second line is "1.2" and the 14th character of line 12 is "14.12". The reason we need this is to try and grab the word which is currently being typed by the user. We need to go back one character in order to do this, which is where adjust_floating_index comes in.

The above indicates that the column/character comes first, then only line; i.e. it becomes column.line instead of line.column.

Is there an issue with the explanation, or is my understanding incorrect?

Python

Use a real monospace font

Computer Modern is a really good font, but code listings are meant to be written in a monospace font. This thing looks bad with uneven tracking, and no way to tell some characters apart.

Also, the .pdf file is hard to discover.

Suggestion - new documentation for syntax-related issues

The code is lovely and self-documenting.

However, there are some syntax choices that may raise questions -- e.g. the difference between pack_propagate(0) and pack, the use of ntpath instead of os.path, and others.

As this is a by-example guide, I suggest the creation of a separate Markdown readme file to briefly describe why some of the code choices were made. It should not be a full-blown documentation, just a simple summary of those parts that may potentially confuse, why it was coded that way, and if necessary, some further references for more extended reading. I am happy to help out.

Tkinter

Visualize button is not working

import tkinter as tk
from tkinter.filedialog import askopenfilename

def browseFile1():
  global infile1
  infile1=askopenfilename()
  txt1.insert(0.0, infile1)

root = tk.Tk()
root.title("Visualization tool")
Label = tk.Label(root, text="Select a PCD file")
Label.grid(row = 1, column = 0, columnspan = 30)
browseButton1 = tk.Button(root,text="Browse", command=browseFile1)
browseButton1.grid(row = 2, column = 30)
txt1 = tk.Text(root, width = 100, height = 1)
txt1.grid(row = 2, column = 0, columnspan = 30)

def processbutton():
  global bro
  bro=processbutton()


browseButton2 = tk.Button(text="Visualize", command = processbutton)
browseButton2.grid(sticky='ew', padx=500, pady=10)


def visualize(cloud):
    global visual
    visual = visualize()
    visual = pcl.pcl_visualization.CloudViewing()

    # filtering ground points
    print(cloud.size)

    fil = cloud.make_passthrough_filter()
    fil.set_filter_field_name("z")
    fil.set_filter_limits(0, 1.5)
    cloud_filtered = fil.filter()

    print(cloud_filtered.size)

###### visualization
    visual.ShowColorCloud(cloud, b'cloud')

    flag = True
    while flag:
        flag != visual.WasStopped()
    end

root.mainloop()

Please help me in this issue. Thanks in advance

Trouble with Loading an Image in Button

I've tried running code like
self.photo = tk.PhotoImage(file="image1.gif")

and it always says it couldn't find pyimageX.gif. The code is looking for "name=" instead of "file="

Have you made a lot of changes in this area and if so, is there updated documentation? I can't get a button to load an image to save my life. I've also tried:
self.photo = tk.PhotoImage(name="image1.gif")

and it seems to succeed but then the image isn't shown in the button. Suggestions? Thx

Can I translate your Tkinter book into Chinese?

Hi dude,
Your Tkinter book is really awesome!
Can I translate it into Chinese?
I will keep your name and add this Github site on it.
And If you approve, I will start translation and share the result with you when it is finished.

BRs,
PengTian

Tk inter Mac OS Quit ()

Hello,
I've got problem, I'm under mac os (High sierra), I'm searching how to close mainloop in tkinter windows. I'v tried .quit and .destroy but it doesn't work at all and it makes the program crashing.
regards,
sr

Scrollbar Problem

Hello.After following the ToDoList V2 guide, I found something weird about the scrollbar.When the task items are too few to show the scrollbar, I can still scroll the task item because of listening the mousewheel event, which make the task frame move up and down.
I tried to find some solution on stackoverflow and the situation is similar to this question.
If I don't explain clearly, you can see the comments under the stackoverflow answer, which is the problem I meet and the solution does not work.Maybe you can figure out this problem and make the code more perfect.
Thanks a lot!