PyQt5 QCalendarWidget – 对象名称更改信号

在本文中，我们将了解如何从 QCalendarWidget 获取对象名称更改信号。对象名称更改信号在对象名称更改后发出。新对象名称作为 objectName 传递。
注意：这是一个私人信号。它可以用于信号连接，但不能由用户发出。

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 
 

下面是实现

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 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
        label.setWordWrap(True)
 
        # 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
sys.exit(App.exec())

输出 ：