PyQt5 - 单选按钮中内容的字体和大小

在本文中，我们将看到如何为单选按钮的内容设置字体和大小，单选按钮基本上有两个部分，一个是指示部分，另一个是包含内容的标签部分。

为了改变字体和内容的大小，我们必须改变单选按钮的样式表代码，下面是样式表代码

QRadioButton
{
font : 20px Ariral;
}

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, 600, 400)
  
        # calling method
        self.UiComponents()
  
        # showing all the widgets
        self.show()
  
    # method for widgets
    def UiComponents(self):
        # creating a radio button
        self.radio_button = QRadioButton("Radio button", self)
  
        # setting geometry of radio button
        self.radio_button.setGeometry(200, 150, 120, 40)
  
        # creating push button
        self.button = QPushButton("press to change", self)
  
        # adding action to push button
        self.button.pressed.connect(self.change)
  
        # setting geometry to button
        self.button.setGeometry(100, 100, 100, 40)
  
  
    # method called by push button
    def change(self):
  
        # setting font to the style sheet
        self.radio_button.setStyleSheet("QRadioButton"
                                        "{"
                                        "font : 20px Arial;"
                                        "}")
  
        # adjusting the size
        self.radio_button.adjustSize()
  
  
  
# create pyqt5 app
App = QApplication(sys.argv)
  
# create the instance of our Window
window = Window()
  
# start the app
sys.exit(App.exec())

输出 ：