Customizing Tkinter radio buttons with distinct styles

Python Tkinter Custom Widgets and Themes: Exercise-4 with Solution

Write a Python program that creates a set of custom radio buttons with distinct styles for selection and deselection using Tkinter.

Sample Solution:

Python Code:

import tkinter as tk
from tkinter import messagebox

class TraditionalRadioButtons:
    def __init__(self, root):
        self.root = root
        self.root.title("Traditional Radio Buttons")

        # Initialize the selected radio button index
        self.selected_option = tk.IntVar()
        self.selected_option.set(0)  # Initialize as no option selected

        # Create traditional radio buttons
        self.radio_button1 = tk.Radiobutton(root, text="Option 1", variable=self.selected_option, value=1, command=self.display_message)
        self.radio_button2 = tk.Radiobutton(root, text="Option 2", variable=self.selected_option, value=2, command=self.display_message)
        self.radio_button3 = tk.Radiobutton(root, text="Option 3", variable=self.selected_option, value=3, command=self.display_message)

        # Pack the radio buttons
        self.radio_button1.pack(pady=10)
        self.radio_button2.pack(pady=10)
        self.radio_button3.pack(pady=10)

    def display_message(self):
        selected_value = self.selected_option.get()
        if selected_value == 1:
            message = "Option 1 selected!"
        elif selected_value == 2:
            message = "Option 2 selected!"
        elif selected_value == 3:
            message = "Option 3 selected!"
        else:
            message = "No option selected!"
        
        messagebox.showinfo("Radio Button Selection", message)

if __name__ == "__main__":
    root = tk.Tk()
    app = TraditionalRadioButtons(root)
    root.mainloop()

Explanation:

In the exercise above -

• It imports the required modules, "tkinter" and "messagebox".
• The "TraditionalRadioButtons" class is defined to create and manage GUI elements.
• Inside the class constructor (init), it sets up the main window and initializes a variable called 'selected_option' to store the selected radio button's value.
• Three radio buttons (radio_button1, radio_button2, and radio_button3) are created using the "Radiobutton" widget. A radio button has a specific value (1, 2, or 3) and a callback function (display_message) for handling selections.
• The radio buttons are packed (arranged vertically) in the main window.
• The "display_message()" function checks the selected radio button's value and displays a corresponding message in a message box (messagebox.showinfo).
• The code creates an instance of the "TraditionalRadioButtons" class and starts the Tkinter main loop to run the application.

Output:

Flowchart:

Python Code Editor:

Previous: Customizing Tkinter entry Widgets with themes.
Next: Customizing Tkinter slider widget with a unique theme.