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
# 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 , 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("GeeksforGeeks", 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 app App = QApplication(sys.argv)
# create the instance of our Window window = Window()
# start the app sys.exit(App. exec ())
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Output :