PyQt5 QCalendarWidget - 释放抓取键盘输入

在本文中，我们将了解如何取消抓取，即释放 QCalendarWidget 的键盘输入。通过抓取键盘，日历不会受到影响，只是它不会接收任何键盘事件。 setFocus像往常一样移动焦点，但新的焦点小部件仅在releaseKeyboard后接收键盘事件。抓取可以在grabKeyboard方法的帮助下完成。

In order to do this we will use releaseKeyboard method with the QCalendarWidget object.

Syntax : calendar.releaseKeyboard()

Argument : It takes no argument

Return : It return None

编程需要懂一点英语

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)
  
        # grabbing keyboard input
        self.calendar.grabKeyboard()
  
        # creating a push button
        push = QPushButton("Release Keyboard", self)
  
        # setting geometry tot he push button
        push.setGeometry(100, 280, 150, 40)
  
        # adding action to the push button
        push.clicked.connect(self.do_action)
  
    def do_action(self):
  
        # releasing the keyboard
        self.calendar.releaseKeyboard()
  
# create pyqt5 app
App = QApplication(sys.argv)
  
# create the instance of our Window
window = Window()
  
# start the app
sys.exit(App.exec())

输出：
最初键盘输入不起作用，但是当调用释放方法时它开始工作