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PyQt5 – Set maximum window size

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  • Last Updated : 26 Mar, 2020
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When we create a window, by default, it is resizable but with the help of setFixedSize() method we can fix the size of window. But what if we want to resize the window up-to some extent; in order to do this, we have to set the maximum size of the window. We will use setMaximumSize() method.

Syntax : self.setMaximumSize(width, height)

Argument : It takes two argument both integer i.e width and height.

Action performed : It set the maximum size of window.

Code :

# importing the required libraries
from PyQt5.QtCore import * 
from PyQt5.QtGui import * 
from PyQt5.QtWidgets import * 
import sys
class Window(QMainWindow):
    def __init__(self):
        # set the title
        width = 500
        height = 400
        # setting the maximum size
        self.setMaximumSize(width, height)
        # creating a label widget
        self.label_1 = QLabel("Maximum size", self)
        # moving position
        self.label_1.move(0, 0)
        # setting up the border
        self.label_1.setStyleSheet("border :3px solid black;")
        # resizing label
        self.label_1.resize(120, 80)
        # show all the widgets
# create pyqt5 app
App = QApplication(sys.argv)
# create the instance of our Window
window = Window()
# start the app

Output :

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