PyQt5 QCalendarWidget – 图标改变信号

在本文中，我们将了解如何从 QCalendarWidget 获取图标更改信号。当日历的图标改变时，会发出图标改变信号。设置图标也发出相同的信号。

In order to do this we will use windowIconChanged method with the QCalendarWidget object.

Syntax : calendar.windowIconChanged.connect(lambda: print(“Icon Changed”))

Argument : It takes no argument

Action Performed : It will print the message whenever 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
        calender = QCalendarWidget(self)
  
        # setting geometry to the calendar
        calender.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 = "Icon Changed Signal Emitted"
  
        # getting the icon changed and
        # when receives the signal printing the message
        calender.windowIconChanged.connect(lambda: label.setText(text))
  
        # setting icon to the calendar
        calender.setWindowIcon(QIcon('logo.png'))
  
  
# create pyqt5 app
App = QApplication(sys.argv)
  
# create the instance of our Window
window = Window()
  
# start the app
sys.exit(App.exec())

输出 ：