PyQt5 QCalendarWidget – 设置定时器事件

在本文中，我们将了解如何为 QCalendarWidget 实现计时器事件。当日历 startTimer 间隔结束时，将向日历发送一个计时器事件。此事件处理程序可以在子类中重新实现，以接收在 event 参数中传递的日历 startTimer 事件。

下面是日历类代码

# QCalendarWidget Class
class Calendar(QCalendarWidget):
    
    # constructor
    def __init__(self, parent=None):
        super(Calendar, self).__init__(parent)

    # overriding the timer event
    # this will show the next month
    def timerEvent(self, event):

        # show the next month
        window.calendar.showNextMonth()

Implementation steps:
1. Create a Calendar class that inherits the QCalendarWidget
2. Inside the Calendar class override the timerEvent and inside the event show the next month of calendar
3. Create a main window class
4. Create a Calendar object inside the main window
5. Set various properties to the calendar

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
  
# QCalendarWidget Class
class Calendar(QCalendarWidget):
  
    # constructor
    def __init__(self, parent = None):
        super(Calendar, self).__init__(parent)
  
    # overriding the timer event
    # this will show the next month
    def timerEvent(self, event):
  
        # show the next month
        window.calendar.showNextMonth()
  
  
class Window(QMainWindow):
  
    def __init__(self):
        super().__init__()
  
        # setting title
        self.setWindowTitle("Python ")
  
        # setting geometry
        self.setGeometry(100, 100, 650, 400)
  
        # calling method
        self.UiComponents()
  
        # showing all the widgets
        self.show()
  
    # method for components
    def UiComponents(self):
  
        # creating a QCalendarWidget object
        # as Calendar class inherits QCalendarWidget
        self.calendar = Calendar(self)
  
        # setting geometry to the calendar
        self.calendar.setGeometry(50, 10, 400, 250)
  
        # setting cursor
        self.calendar.setCursor(Qt.PointingHandCursor)
  
        # starting the calendar timer
        # passing 1000 milliseconds as parameter
        timer_id = self.calendar.startTimer(1000)
  
          
  
  
# create pyqt5 app
App = QApplication(sys.argv)
  
# create the instance of our Window
window = Window()
  
# start the app
sys.exit(App.exec())

输出 ：