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PyQt5 QSpinBox – Adding border to the down button when pressed
  • Last Updated : 17 May, 2020

In this article we will see how we can add border to the down button of spin box when it get pressed. Spinbox consist of two buttons up and down, down button is used to decrement the value, it has its own default border although we can change it. A customized border will appear to the down button when it get pressed.

In order to do this we have to change the style sheet code associated with the spin box, below is the style sheet code

QSpinBox::down-button:pressed
{
border : 4px solid blue;
}

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 prefix to spin
        self.spin.setPrefix("Prefix ")
  
        # setting suffix to spin
        self.spin.setSuffix(" Suffix")
  
        # setting style sheet to the spin box
        # adding border to the down button of spin box
        # when it get pressed
        self.spin.setStyleSheet("QSpinBox::down-button:pressed"
                                "{"
                                "border : 4px solid red;"
                                "}")
  
# 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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