PyQt5 - Change the size of radio button

Last Updated : 28 Apr, 2025

In this article we will see how we can change the size of pre-existing radio button when we pressed the push button, we can change the size of radio button with the help of setGeometry method.

In order to change the size of radio button when push button is pressed we have to do the following: 1. Create Radio button 2. Add border to the radio button so we can see if its size is changed or not 3. Create a push button 4. Add action to push button such that method get called when push button is pressed 5. In side the method change the size of radio button with the help of setGeometry method

Below is the implementation -

Python3

# importing libraries
from PyQt5.QtWidgets import * 
from PyQt5 import QtCore, QtGui
from PyQt5.QtGui import * 
from PyQt5.QtCore import * 
import sys


class Window(QMainWindow):

    def __init__(self):
        super().__init__()

        # setting title
        self.setWindowTitle("Python ")

        # setting geometry
        self.setGeometry(100, 100, 600, 400)

        # calling method
        self.UiComponents()

        # showing all the widgets
        self.show()

    # method for widgets
    def UiComponents(self):
        # creating a radio button
        self.radio_button = QRadioButton("Radio button", self)

        # setting geometry of radio button
        self.radio_button.setGeometry(200, 150, 120, 40)

        # adding border to the radio button
        self.radio_button.setStyleSheet("border : 2px solid green;")

        # creating push button
        self.button = QPushButton("pressed", self)

        # adding action to push button
        self.button.pressed.connect(self.change)

        # setting geometry to button
        self.button.setGeometry(100, 100, 100, 40)


    # method called by push button
    def change(self):

        # change the size of radio button
        self.radio_button.setGeometry(200, 150, 200, 60)



# create pyqt5 app
App = QApplication(sys.argv)

# create the instance of our Window
window = Window()

# start the app
sys.exit(App.exec())