PyQt5 QCalendarWidget 杀死定时器
在这篇文章中,我们将看到如何杀死QCalendarWidget的定时器。为了启动定时器,我们使用startTimer方法,这个方法在一定的时间间隔过后调用timerEvent。它启动一个定时器并返回一个定时器的标识符,如果不能启动一个定时器则返回0。
为了做到这一点,我们将使用QCalendarWidget对象的killTimer方法。
语法 : calendar.killTimer(timer_id)
参数: 它需要整数作为参数,即定时器的ID。
返回: 它返回无
实施步骤 : :
1.创建一个继承了QCalendarWidget的日历类
2.在日历类中覆盖timerEvent,并在事件中显示下个月的日历
3.创建一个主窗口类
4.在主窗口内创建一个日历对象
5.为日历设置各种属性
6.创建一个按钮
7.给按钮添加动作,在动作中杀死计时器
下面是实现的过程
# 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())