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PyQt5 – Set maximum size for width or height of window

  • Last Updated : 26 Mar, 2020

When we create a window, by default the window size is resizable, although we can use setMaximumSize() method to set the maximum size of the window. But what if we want to set maximum length only for width or height only. In order to do so we use setMaximumWidth() and setMaximumHeight() method to set maximum width / height. When we use these method other length will be variable i.e there will be no maximum length to it, it can be stretched to the size of screen.

Syntax :

self.setMaximumWidth(width)
self.setMaximumHeight(height)

Argument : Both takes integer as argument.

Action performed :
setMaximumWidth() sets the maximum width.
setMaximumHeight() sets the maximum height.

Code for maximum width –






# importing the required libraries
  
from PyQt5.QtCore import * 
from PyQt5.QtGui import * 
from PyQt5.QtWidgets import * 
import sys
  
  
class Window(QMainWindow):
    def __init__(self):
        super().__init__()
  
        # set the title
        self.setWindowTitle("Python")
  
        width = 200
  
        # setting the maximum width
        self.setMaximumWidth(width)
  
        # creating a label widget
        self.label_1 = QLabel("Maximum width", 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
        self.show()
  
  
# create pyqt5 app
App = QApplication(sys.argv)
  
# create the instance of our Window
window = Window()
  
# start the app
sys.exit(App.exec())

Output :

 
Code for maximum height –




# importing the required libraries
  
from PyQt5.QtCore import * 
from PyQt5.QtGui import * 
from PyQt5.QtWidgets import * 
import sys
  
  
class Window(QMainWindow):
    def __init__(self):
        super().__init__()
  
  
        # set the title
        self.setWindowTitle("Python")
  
        height = 200
  
        # setting the maximum height
        self.setMaximumHeight(height)
  
  
        # creating a label widget
        self.label_1 = QLabel("Maximum height", 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
        self.show()
  
  
# create pyqt5 app
App = QApplication(sys.argv)
  
# create the instance of our Window
window = Window()
  
# start the app
sys.exit(App.exec())

Output :

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