Skip to content
Related Articles

Related Articles

Improve Article
PyQt5 QSpinBox – Getting Pixel Ratio Scale
  • Last Updated : 19 May, 2020

In this article we will see how we can get the pixel ratio scale for the spin box. The device pixel ratio is the ratio between physical pixels and logical pixels of the spin box. Pixel ratio scale is the type of variable measurement scale which is quantitative in nature. Ratio scale allows any researcher to compare the intervals or differences.

In order to do this we use devicePixelRatioFScale method

Syntax : spin_box.devicePixelRatioFScale()

Argument : It takes no argument

Return : It returns float



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
  
  
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 spin box
        self.spin = QSpinBox(self)
  
        # setting geometry to spin box
        self.spin.setGeometry(100, 100, 250, 40)
  
        # setting range to the spin box
        self.spin.setRange(0, 999999)
  
        # setting prefix to spin
        self.spin.setPrefix("Prefix ")
  
        # setting suffix to spin
        self.spin.setSuffix(" Suffix")
  
        # getting pixel ratio scale
        pixel_ratio_scale = self.spin.devicePixelRatioFScale()
  
        # creating label
        label = QLabel(self)
  
        # setting geometry to the label
        label.setGeometry(100, 200, 200, 70)
  
        # making it multi line label
        label.setWordWrap(True)
  
        # setting text to the label
        label.setText("Pixel Ratio Scale : " + str(pixel_ratio_scale))
  
# create pyqt5 app
App = QApplication(sys.argv)
  
# create the instance of our Window
window = Window()
window.spin.setFocus()
# start the app
sys.exit(App.exec())

Output :

 Attention geek! Strengthen your foundations with the Python Programming Foundation Course and learn the basics.  

To begin with, your interview preparations Enhance your Data Structures concepts with the Python DS Course. And to begin with your Machine Learning Journey, join the Machine Learning – Basic Level Course




My Personal Notes arrow_drop_up
Recommended Articles
Page :