Understanding Tkinter: Python's Gateway to GUI Development

How to install Tkinter Module 🔝

C:\Users\user name>pip install tk

What is my Tkinter Installed Version? 🔝

import tkinter
print(tkinter.TkVersion) # 8.6 

check tkinter installation 🔝

C:\Users\user name>python -m tkinter

Show one blank window. 🔝

import tkinter as tk
my_w = tk.Tk()
my_w.geometry("500x500")  # Size of the window 
my_w.title("www.plus2net.com")  # Adding a title
my_w.mainloop()  # Keep the window open

my_w.bind('<Escape>', lambda e:my_w.quit()) # to close. 

geometry() 🔝

my_w.geometry("400x350+410+100")  # Size & Position

width,height=710,710 # set the variables 
d=str(width)+"x"+str(height)
my_w.geometry(d) 

my_w.resizable(width=0,height=0) # resizing of window is not allowed 

my_w.state('zoomed') # default is 'normal' 

What is mainloop() ? 🔝

import tkinter as tk
my_w = tk.Tk() # root window
my_w.geometry("400x250")  # Size of the window 

print( ' I am before mainloop ')
my_w.mainloop()  # Keep the window open
print(' I am after mainloop')

Change the background colour 🔝

my_w.configure(background='black')
#OR
#my_w.configure(background='#FFFF00')

List of widgets in Tkinter 🔝

Basic Widgets

• Button: Add button with click events and style
• Label: Add Label and change text & other attributes
• Entry: Add Text box, Single line text entry
• Text: Add Text box, Multi line text entry
• Checkbutton: Read data and manage (set or get) of a checkbutton
• Radiobutton: Read data and manage (set or get) of a Radio button

Container and Layout Widgets

• frame: Group widgets and add separator to window
• LabelFrame: Group Widgets and add Label
• PanedWindow: Container allowing user to adjust the size by using the mouse
• Toplevel: Display pop-up or child window from Parent

Selection and Input Widgets

• Listbox: Read selection, add elements to a listbox
• OptionMenu: Drop down box to select one of many options
• Spinbox: User selection from a range of options
• Scale: Use slider to fix value
• StringVar: tk.StringVar() and trace with callback functions

Menu and Dialog Widgets

• Menu: Menu with option and methods
• Menubutton: Dropdown menu
• MessageBox: Show Message box and take user choice
• askopenfile: Dialog box to show file browser & upload file from local system
• askopenfile: Upload and display images using file browser
• colorchooser: Access the native colour picker dialog
• simpledialog: Dialog box to take user input

Visual and Drawing Widgets

• Canvas: Draw Line, Arc, Oval, Polygon, rectangle etc
• image: Displaying icon and Images on Window
• Scrollbar: Scrollbar options and uses

Special Purpose Widgets

• Message: Displaying in-process Messages
• DateEntry: Display Drop-down Date entry
• clock: Display time with Date
• Calendar: Display Date picker
• colors: Tkinter supported colors list

ttk : Tkinter Themed widgets 🔝

import tkinter as tk
from tkinter import ttk

Layout of widgets in Tkinter window 🔝

Handy Reference 🔝

ttkbootstrap 🔝

Tkinter and Database integration 🔝

Dynamic Graphs in Tkinter GUI 🔝

l3 = tk.Label(my_w,  text='Welcome')
object_methods=[l3 for l3 in dir(tk.Label)
               if callable(getattr(tk.Label,l3))]
print(object_methods)

Transparent Window 🔝

my_w.attributes('-alpha',0.5)

Time delay using after() 🔝

l1.after(3000,lambda:l1.config(fg='white',bg='white',text=''))

Difference between sleep() and after()

Creating windows EXE file from Tkinter 🔝

python3 -m PyIntaller tk-clock.py

important tips for application development 🔝

QR code generator 🔝