PyQt5 – How to open window in maximized format?

In this article we will see how to make a window to open in maximized format, which refer to full screen display window. We can do this by using showMaximized method which belongs to QWidget class.

Syntax : self.showMaximized()

Argument : It takes no argument.

Action performed It will open the window in full screen format.

Code :

# importing libraries
from PyQt5.QtWidgets import *
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 label
        label = QLabel("Label", self)

        # setting geometry to label
        label.setGeometry(100, 100, 120, 40)

        # adding border to label
        label.setStyleSheet("border : 2px solid black")

        # opening window in maximized size
        self.showMaximized()


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

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

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

Output :