PyQt5 – 如何在鼠标悬停时更改复选框背景颜色

在本文中，我们将了解如何在鼠标悬停在复选框上时为其设置背景颜色。默认情况下，没有与之关联的背景颜色。只有当鼠标悬停在它上面时才会出现这种背景颜色。

为了给复选框添加背景颜色，我们必须更改样式表代码，下面是执行此操作的样式表代码。

QCheckBox::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 the check-box
        checkbox1 = QCheckBox('Geek ?', self)
  
        # setting geometry of check box
        checkbox1.setGeometry(200, 150, 100, 40)
  
        # changing style sheet code of check box
        # adding background color to it when mouse hover over it
        checkbox1.setStyleSheet("QCheckBox::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 ：