PyQt5 QCalendarWidget - 将文本设置为选定日期

在本文中，我们将看到如何将文本设置为 QCalendarWidget 的选定日期。为了将文本添加到选定的日期，我们必须使用paintCell方法，它是虚拟保护方法，可以通过覆盖该方法来使用，因为该方法在paintEvent() 中调用。下面是文本的外观

Implementation Steps :
1. Create Calendar class which inherits the QCalendarWidget
2. Inside the Calendar class overwrite the paintCell method
3. Create a main window
4. Add Calendar object inside the main window

编程需要懂一点英语

下面是日历类代码

# QCalendarWidget Class
class Calendar(QCalendarWidget):

    def paintCell(self, painter, rect, date):
        super(Calendar, self).paintCell(painter, rect, date)

        # checking if date is selected date
        if date == self.selectedDate():

            # saving the painter
            painter.save()

            # creating a QFont object
            font = QFont()

            # setting pixel size of the font
            font.setPixelSize(11)

            # making font bold
            font.setBold(True)

            # making font italic
            font.setItalic(True)

            # setting font to the painter
            painter.setFont(font)
            
            # drawing text
            painter.drawText(
                rect.topLeft() + QPoint(10, 10),
                "{}".format("Geek"),
            )
            
            # restoring the painter
            painter.restore()

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
  
# QCalendarWidget Class
class Calendar(QCalendarWidget):
  
    def paintCell(self, painter, rect, date):
        super(Calendar, self).paintCell(painter, rect, date)
  
        # checking if date is selected date
        if date == self.selectedDate():
  
            # saving the painter
            painter.save()
  
            # creating a QFont object
            font = QFont()
  
            # setting pixel size of the font
            font.setPixelSize(11)
  
            # making font bold
            font.setBold(True)
  
            # making font italic
            font.setItalic(True)
  
            # setting font to the painter
            painter.setFont(font)
  
            # drawing text
            painter.drawText(
                rect.topLeft() + QPoint(10, 10),
                "{}".format("Geek"),
            )
  
            # restoring the painter
            painter.restore()
  
  
  
class Window(QMainWindow):
  
    def __init__(self):
        super().__init__()
  
        # setting title
        self.setWindowTitle("Python ")
  
        # setting geometry
        self.setGeometry(100, 100, 500, 400)
  
        # calling method
        self.UiComponents()
  
        # showing all the widgets
        self.show()
  
  
    # method for components
    def UiComponents(self):
  
        # creating a QCalendarWidget object
        # as Calendar class inherits QCalendarWidget
        self.calendar = Calendar(self)
  
        # setting cursor
        self.calendar.setCursor(Qt.PointingHandCursor)
  
        # setting size of the calendar
        self.calendar.resize(350, 240)
  
        # setting font to the calendar
        self.calendar.setFont(QFont('Times', 5))
  
        # move the calendar
        self.calendar.move(10, 10)
  
  
  
# create pyqt5 app
App = QApplication(sys.argv)
  
# create the instance of our Window
window = Window()
  
# start the app
sys.exit(App.exec())

输出：