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PyQt5 QSpinBox – How to get the preferred height for the given width

  • Last Updated : 28 May, 2020

In this article we will see how we can get the preferred height of the spin box according to the width. Height depending on the width means that when ever the width changes height also changes. By default height don’t depends on the width.

Note : If spin box has a layout, the default implementation returns the layout’s preferred height. if there is no layout, the default implementation returns -1 indicating that the preferred height does not depend on the width.

In order to do this we use heightForWidth method with the spin box object.

Syntax : spin_box.heightForWidth(width)

Argument : It takes integer as argument

Return : It returns integer

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(1, 999999)
  
        # setting prefix to spin
        self.spin.setPrefix("PREFIX ")
  
        # setting suffix to spin
        self.spin.setSuffix(" SUFFIX")
  
        # creating a label
        label = QLabel(self)
  
        # making the label multi line
        label.setWordWrap(True)
  
        # setting geometry to the label
        label.setGeometry(100, 200, 200, 60)
  
        # getting preferred height of the spin box with current width
        value = self.spin.heightForWidth(250)
  
        # setting text to the label
        label.setText("Preferred height " + str(value))
  
  
# 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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