In this article we will see how we can get the name change signal of the QDateEdit. Name is basically used for finding widget in the window and also for style sheet to edit the style sheet of the given name widget. This signal is emitted after the object’s name has been changed. 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 use objectNameChanged method with the QDateEdit object
Syntax : date.objectNameChanged.connect(method) Argument : It takes method as argument Return : It returns None
Below is the implementation
Python3
# importing librariesfrom PyQt5.QtWidgets import *from PyQt5 import QtCore, QtGuifrom PyQt5.QtGui import *from PyQt5.QtCore import *import sysclass Window(QMainWindow): def __init__(self): super().__init__() # setting title self.setWindowTitle("Python ") # setting geometry self.setGeometry(100, 100, 500, 400) # calling method self.UiComponents() # showing all the widgets self.show() # method for components def UiComponents(self): # creating a QDateEdit widget date = QDateEdit(self) # setting geometry of the date edit date.setGeometry(100, 100, 150, 40) # creating a label label = QLabel("neveropen", self) # setting geometry label.setGeometry(100, 150, 200, 60) # making label multiline label.setWordWrap(True) # getting name change signal date.objectNameChanged.connect(lambda: date_method()) # method called by date edit def date_method(): # setting text to the label label.setText("Name Change Signal Emitted") # setting name to the date edit date.setObjectName("Geeks")# create pyqt5 appApp = QApplication(sys.argv)# create the instance of our Windowwindow = Window()# start the appsys.exit(App.exec()) |
Output : 
