PyQt5 - 鼠标悬停时单选按钮选中指示器的背景颜色

在本文中，我们将看到当单选按钮处于选中状态并将鼠标悬停在其上时，如何将背景颜色设置为单选按钮的指示器。默认情况下，没有与指示器关联的颜色。

为了在指示器处于选中状态并将鼠标悬停在指示器上时为其添加背景颜色，我们必须更改单选按钮的样式表代码，下面是样式表代码。

QRadioButton::indicator:checked:hover
{
background-color : lightgreen;
}

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 to checked indicator when mouse hover over it
        self.radio_button.setStyleSheet("QRadioButton::indicator:checked:hover"
                                        "{"
                                        "background-color : lightgreen;"
                                        "}")
  
  
# create pyqt5 app
App = QApplication(sys.argv)
  
# create the instance of our Window
window = Window()
  
# start the app
sys.exit(App.exec())

输出 ：