PyQt5 QSpinBox – Clearing the Mask

In this article we will see how we can clear the mask from the spin box, masks are used to hide part of a UI Image element. We can set mask using setMask method. In order to do this we use clearMask method.

Syntax : spin_box.clearMask() 

Argument : It takes no argument 

Action Performed : It mask on the spin box

Implementation steps :
1. Create a main window 
2. Create a spin box set its range prefix and suffix 
3. Add mask to the spin box 
4. Create a push button 
5. Add action to the push button 
6. Inside the action method call the clearMask method 

Below is the implementation 

Python3

# 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")

        # creating a push button
        push = QPushButton("Clear", self)

        # setting geometry to the push button
        push.setGeometry(100, 200, 100, 40)

        # adding action to the push button
        push.clicked.connect(self.push_action)

        # setting mask on spin box
        region = self.spin.childrenRegion()
        self.spin.setMask(region)

    # method called by the push button
    def push_action(self):

        # clearing the mask
        self.spin.clearMask()


# 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 :