PyQt5 - 更改未选中状态的单选按钮颜色

在本文中，我们将看到如何在单选按钮处于未选中状态时更改其颜色，默认情况下，单选按钮的任何状态都没有设置颜色。为了将颜色设置为未选中状态的单选按钮，我们必须更改单选按钮选中状态的样式表。下面是样式表代码。

QRadioButton::unchecked
{
background-color : red;   
}

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(self)
  
        # setting geometry of radio button
        self.radio_button.setGeometry(200, 150, 120, 40)
  
        # setting text to radio button
        self.radio_button.setText("Radio Button")
  
        # changing style sheet code of radio button
        # setting background color for unchecked state
        self.radio_button.setStyleSheet("QRadioButton::unchecked"
                                        "{"
                                        "background-color : red;"
                                        "}")
  
  
# create pyqt5 app
App = QApplication(sys.argv)
  
# create the instance of our Window
window = Window()
  
# start the app
sys.exit(App.exec())

输出 ：