PyQt5 QCalendarWidget - 检查它是否是活动窗口

在本文中，我们将了解如何检查 QCalendarWidget 是否为活动窗口。活动窗口是具有键盘输入焦点的可见顶级窗口。使其成为活动窗口会将包含此日历的顶级小部件设置为活动窗口。我们可以借助 activateWindow 方法使其成为活动窗口。
注意：此方法应在主窗口类之外调用，否则它将始终返回 false

In order to do this we will use isActivateWindow method with the QCalendarWidget object.
Syntax : calendar.isActivateWindow()
Argument : It takes no argument
Action Performed : It return bool

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, 600, 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(10, 10, 400, 250)
 
        # setting name
        self.calendar.setAccessibleName("Geek Calendar")
 
        # making it an active window
        self.calendar.activateWindow()
 
 
        # creating a label
        label = QLabel(self)
 
        # setting geometry to the label
        label.setGeometry(100, 280, 250, 60)
 
        # making label multi line
        label.setWordWrap(True)
 
        # checking active window
        value = self.calendar.isActiveWindow()
 
        # setting text to the label
        label.setText("Active Window(Checking inside the class) " + str(value))
 
 
# create pyqt5 app
App = QApplication(sys.argv)
 
# create the instance of our Window
window = Window()
 
# checking if active window
# outside the class
check = window.calendar.isActiveWindow()
print("Active window : " + str(check))
 
# start the app
sys.exit(App.exec())

输出：

Active window : True