PyQt5 QCalendarWidget – 设置启动定时器

在本文中，我们将了解如何设置 QCalendarWidget 的启动计时器。为此，我们使用 startTimer 方法，该方法在经过一定间隔后调用 timerEvent。它启动一个定时器并返回一个定时器标识符，如果它不能启动一个定时器则返回零。

In order to do this we will use startTimer method with the QCalendarWidget object.
Syntax : calendar.startTimer(milliseconds)
Argument : It takes integer as argument i.e interval time in milliseconds
Return : It return integer 
 

注意：为了使用 startTimer 我们必须覆盖 timerEvent
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
    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)
 
        # creating label to show the properties
        self.label = QLabel(self)
 
        # setting geometry to the label
        self.label.setGeometry(100, 280, 250, 60)
 
        # making label multi line
        self.label.setWordWrap(True)
 
        # setting text to the label
        self.label.setText("Timer ID : " + str(timer_id))
 
 
# create pyqt5 app
App = QApplication(sys.argv)
 
# create the instance of our Window
window = Window()
 
# start the app
sys.exit(App.exec())

输出 ：