PyQt5 QCalendarWidget - 杀死计时器

在本文中，我们将看到如何杀死 QCalendarWidget 的计时器。为了启动定时器，我们使用startTimer方法，该方法在经过一定的时间间隔后调用 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 killTimer method with the QCalendarWidget object.

Syntax : calendar.killTimer(timer_id)

Argument : It takes integer as argument i.e timer ID

Return : It return None

编程需要懂一点英语

实施步骤：：
1.创建一个继承QCalendarWidget的Calendar类
2. Calendar 类内部覆盖 timerEvent 并在事件内部显示下个月的日历
3.创建一个主窗口类
4. 在主窗口中创建一个日历对象
5.设置日历的各种属性
6.创建一个按钮
7.为按钮添加动作，在动作内部杀死计时器

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
        self.timer_id = self.calendar.startTimer(1000)
  
        # creating a push button
        push = QPushButton("Kill Timer", self)
          
        # setting geometry to the push button
        push.setGeometry(100, 280, 120, 40)
          
        # adding action to the push button
        push.clicked.connect(self.do_Action)
  
  
    def do_Action(self):
          
        # killing the timer
        self.calendar.killTimer(self.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：