PyQt5 QCalendarWidget – 关注前一个孩子

在本文中，我们将了解如何将焦点从 QCalendarWidget 转移到上一个小部件。为此，我们使用focusPreviousChild方法。它根据 Shift+Tab 找到一个新的小部件以将键盘焦点分配给它，如果它可以找到一个新的小部件，则返回 true，如果找不到，则返回 false。

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

Syntax : calendar.focusPreviousChild()

Argument : It takes no argument

Return : It return bool

编程需要懂一点英语

下面是实现

# 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.calender = QCalendarWidget(self)
  
        # setting geometry to the calender
        self.calender.setGeometry(50, 10, 400, 250)
  
        # setting cursor
        self.calender.setCursor(Qt.PointingHandCursor)
  
        # 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)
  
        # focus previous child
        value = self.calender.focusPreviousChild()
  
        # setting text to the label
        self.label.setText("Found focus on previous ? : " + str(value))
  
  
# create pyqt5 app
App = QApplication(sys.argv)
  
# create the instance of our Window
window = Window()
  
# start the app
sys.exit(App.exec())

输出：