PyQt5 QCalendarWidget – 标题改变信号

在本文中，我们将了解如何从 QCalendarWidget 获取标题更改信号。当日历的标题（即标题）发生更改时，会发出标题更改信号。设置标题也会发出相同的信号。

In order to do this we will use windowTitleChanged method with the QCalendarWidget object.
Syntax : calendar.windowTitleChanged.connect(lambda: print(“Title Changed”))
Argument : It takes no argument
Action Performed : It will print the message whenever signal get emitted

编程需要懂一点英语

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
        calendar = QCalendarWidget(self)
 
        # setting geometry to the calendar
        calendar.setGeometry(10, 10, 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 = "Title Changed Signal Emitted"
 
        # getting the title changed signal and
        # when receives the signal printing the message
        calendar.windowTitleChanged.connect(lambda: label.setText(text))
 
        # setting caption to the calendar
        calendar.setWindowTitle("Title")
 
 
# create pyqt5 app
App = QApplication(sys.argv)
 
# create the instance of our Window
window = Window()
 
# start the app
sys.exit(App.exec())

输出：