PyQt5 – setChecked() method for Check Box

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setChecked method is used to change the state of check box. By default it is un-checked after clicking on the check box widget its states get changed into checked, but with the help of setChecked method we can do it directly without clicking it.

Syntax : checkbox.setChecked(True)

Argument : It takes bool as argument.

Action performed : It will change the state of check box.

Below is the implementation.

# 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 the check-box 
        checkbox = QCheckBox('Check Box', self) 
  
        # setting geometry of check box 
        checkbox.setGeometry(200, 150, 100, 30) 
  
        # setting check box state to checked 
        checkbox.setChecked(True) 
  
  
# create pyqt5 app 
App = QApplication(sys.argv) 
  
# create the instance of our Window 
window = Window() 
  
# start the app 
sys.exit(App.exec()) 