PyQt5 QCalendarWidget – 设置按键事件

在本文中，我们将了解如何为 QCalendarWidget 实现按键事件。为了设置按键事件，我们必须重写 keyPressEvent 方法，通过重写按键事件，我们可以在按键被按下时向日历添加功能。

Implementation steps:
1. Create a main window
2. Create a QCalendarWidget
3. Set various properties to the calendar
4. Override the keyPressEvent
5. Inside the override method check if the escape key pressed then show the today in 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
  
  
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
        self.calendar = QCalendarWidget(self)
  
        # setting geometry to the calendar
        self.calendar.setGeometry(50, 10, 400, 250)
  
        # setting cursor
        self.calendar.setCursor(Qt.PointingHandCursor)
  
  
    # overriding key press event
    def keyPressEvent(self, e):
  
        # when escape key is pressed
        if e.key() == Qt.Key_Escape:
  
            # show the present date
            self.calendar.showToday()
            print("Calendar Show Today")
  
  
# create pyqt5 app
App = QApplication(sys.argv)
  
# create the instance of our Window
window = Window()
  
# start the app
sys.exit(App.exec())

输出：

Calendar Show Today
Calendar Show Today
Calendar Show Today
Calendar Show Today

每当按下退出键时，它都会显示今天（当前日期页面）