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PyQt5 QCalendarWidget – Object Name Changed signal

Last Updated : 09 Aug, 2021
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In this article we will see how we can get the object name changed signal from the QCalendarWidget. Object name changed signal is emitted after the object’s name has been changed. The new object name is passed as objectName.
Note : This is a private signal. It can be used in signal connections but cannot be emitted by the user.

In order to do this we will use objectNameChanged method with the QCalendarWidget object.
Syntax : calendar.objectNameChanged.connect(lambda: print(“Object name change signal Signal”))
Argument : It takes method as argument
Action Performed : It will print the message whenever activated signal get emitted 

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):
        # setting title
        self.setWindowTitle("Python ")
        # setting geometry
        self.setGeometry(100, 100, 600, 400)
        # calling method
        # showing all the widgets
    # method for components
    def UiComponents(self):
        # creating a QCalendarWidget object
        self.calendar = QCalendarWidget(self)
        # setting geometry to the calendar
        self.calendar.setGeometry(50, 50, 400, 250)
        # creating a label
        label = QLabel(self)
        # setting geometry to the label
        label.setGeometry(100, 280, 250, 60)
        # making label multi line
        # text
        text = "Object name changed signal emitted"
        # getting the object name changed signal
        self.calendar.objectNameChanged.connect(lambda: label.setText(text))
        # changing object name
        self.calendar.setObjectName("New Name")
# create pyqt5 app
App = QApplication(sys.argv)
# create the instance of our Window
window = Window()
# start the app

Output : 


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