PyQt5 QCalendarWidget – Enabling/Disabling Auto Fill Background Property

In this article we will see how we enable or disable the auto fill property of the QCalendarWidget, this property will cause Qt to fill the background of the calendar before invoking the paint event. The color used is defined by the QPalette. By default this property is false.
This property should be handled with caution in conjunction with Qt Style Sheets. When a calendar has a style sheet with a valid background or a border-image, this property is automatically disabled.

In order to do this we will use setAutoFillBackground method with the QCalendarWidget object.
Syntax : calendar.setAutoFillBackground(True)
Argument : It takes bool as argument
Return : It return None 

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 components
    def UiComponents(self):

        # creating a QCalendarWidget object
        self.calendar = QCalendarWidget(self)

        # setting geometry to the calendar
        self.calendar.setGeometry(50, 10, 400, 250)

        # setting style sheet
        self.calendar.setStyleSheet("background : lightgreen;")

        # enabling auto fill background
        self.calendar.setAutoFillBackground(True)



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

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


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

Output :