PyQt5 QCalendarWidget – 获取前台角色

在本文中，我们将了解如何获取 QCalendarWidget 的前台角色。日历中的角色基本上有两种类型，一种是前台，另一种是后台。前景角色定义用于绘制前景的日历调色板中的颜色。如果未设置显式前台角色，则前台返回与后台角色形成对比的角色。我们可以借助 setForegroundRole 方法设置前台角色。

In order to do this we will use foregroundRole method with the QCalendarWidget object.
Syntax : calendar.foregroundRole()
Argument : It takes no argument
Return : It return QPalette.ColorRole object but when printed it shows the value associated with the role

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.calender = QCalendarWidget(self)
 
        # setting geometry to the calendar
        self.calender.setGeometry(50, 10, 400, 250)
 
        # setting cursor
        self.calender.setCursor(Qt.PointingHandCursor)
 
        # setting foreground role
        self.calender.setForegroundRole(QPalette.Base)
 
        # getting palette and setting color to the background to it
        p = self.calender.palette()
        p.setColor(self.calender.foregroundRole(), Qt.darkGray)
        self.calender.setPalette(p)
 
        # 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)
 
        # getting foreground role
        value = self.calender.foregroundRole()
 
        # setting text to the label
        self.label.setText("Fore ground role : " + 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：