PyQt5 QSpinBox – Setting under line

In this article we will see how we can set the under line to the spin box. An underline, also called an underscore, is a more or less horizontal line immediately below a portion of writing. Single and occasionally double underlining is used in hand-written or typewritten documents as a way to emphasise key text. Below is how underline text of spin box looks like

In order to do this we use setUnderline method with the QFont object of the spin box.

Syntax : font.setUnderline(True)

Argument : It takes bool as argument

Return : It returns None

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 font of the spin box
        font = self.spin.font()

        # setting under line
        font.setUnderline(True)

        # reassigning this font to the spin box
        self.spin.setFont(font)



# create pyqt5 app
App = QApplication(sys.argv)

# create the instance of our Window
window = Window()

# start the app
sys.exit(App.exec())

Output :