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PyQt5 – Background color of intermediate indicator in Check Box
  • Last Updated : 22 Apr, 2020

In this article we will see how to set background color to an indicator of check box when it is in intermediate state. By default the check box have only two states although we can make a third state as well which is not checked or unchecked. It is inbetween, both of these states refer as intermediate state with the help of setTristate method.

In order to add background color to indicator in intermediate state we have to change the style sheet of the indicator for intermediate state below is the style sheet code.

QCheckBox::indicator:indeterminate
{
background-color : blue;
}

Note : In order to see this we have to make third state first without that it will not work.

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 the check-box
        checkbox = QCheckBox('Geek ?', self)
  
        # setting geometry of check box
        checkbox.setGeometry(200, 150, 100, 30)
  
        # creating tri-state check box
        checkbox.setTristate(True)
  
        # adding background color to the indicator
        # when it is in intermediate state
        checkbox.setStyleSheet("QCheckBox::indicator:indeterminate"
                               "{"
                               "background-color : blue;"
                               "}")
  
# create pyqt5 app
App = QApplication(sys.argv)
  
# create the instance of our Window
window = Window()
  
# start the app
sys.exit(App.exec())

Output :

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

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