PyQt5 QCalendarWidget – Setting Maximum Size

In this article we will see how we can set the maximum size to the QCalendarWidget. Maximum size of the calendar is that size after which it can’t be expanded any further, by default when we create a calendar inside the layout and when the window get extended or shrinks calendar size also increases and shrinks, therefore, there is need to set the maximum size. We can individually set maximum width and height with the help of setMaximumWidth and setMaximumHeight method respectively.

In order to do this we will use setMaximumSize method with the QCalendarWidget object.

Syntax : calendar.setMaximumSize(size)

Argument : It takes QSize object as argument

Return : It return None

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

# QCalendarWidget Class
class Calendar(QCalendarWidget):

    # constructor
    def __init__(self, parent = None):
        super(Calendar, self).__init__(parent)
        self.setMouseTracking(True)


class Window(QMainWindow):

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

        # setting title
        self.setWindowTitle("Python ")

        # setting geometry
        self.setGeometry(100, 100, 500, 400)

        # calling method
        self.UiComponents()

        # showing all the widgets
        self.show()


    # method for components
    def UiComponents(self):

        # creating a layout
        layout = QVBoxLayout()

        # creating a QCalendarWidget object
        # as Calendar class inherits QCalendarWidget
        self.calendar = Calendar(self)

        # setting cursor
        self.calendar.setCursor(Qt.PointingHandCursor)

        # adding calendar tot he layout
        layout.addWidget(self.calendar)

        # setting maximum size
        self.calendar.setMaximumSize(QSize(500, 400))


        # setting layout
        widget = QWidget()
        widget.setLayout(layout)
        self.setCentralWidget(widget)




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

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

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

Output :

When we try to expand the window calendar size did not expand when maximum size reached