PyQt5 – 单选按钮中内容的字体和大小

在这篇文章中，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，一个是指示器部分，另一个是包含内容的标签部分。为了改变内容的字体和大小，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 Arial;
}

以下是执行情况

# 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())