PyQt5 – 鼠标悬停时选中单选按钮指示器的背景图像

在本文中，我们将看到当鼠标悬停在单选按钮的指示器上并且它处于选中状态时，如何将背景图像设置为它，默认情况下没有图像与之关联，尽管我们可以向其添加图像。背景图像仅在指示器处于选中状态以及将鼠标悬停在单选按钮上时才会显示给指示器。

为了将背景图像添加到单选按钮的指示器，我们必须更改它的样式表代码。下面是样式表代码。

QRadioButton::indicator:checked:hover
{
background-image : url(image.png);
}

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

输出 ：