PyQt5 – 当鼠标悬停时为单选按钮的指示器设置背景图片

在这篇文章中，我们将看到如何在鼠标悬停在单选按钮上时为其设置背景图片，在默认情况下，没有与之相关的图片，尽管我们可以添加它。只有当鼠标悬停在单选按钮上时，背景图片才会出现在指标上。

为了给单选按钮的指示器添加背景图片，我们必须改变它的样式表代码。下面是样式表的代码。

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

以下是实施情况。

# 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(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 indicator when mouse hover over it
        self.radio_button.setStyleSheet("QRadioButton::indicator: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())