PyQt5 QSpinBox – 当鼠标悬停在它上面时添加背景颜色

在本文中，我们将看到如何在鼠标悬停在旋转框上时为其设置背景颜色，默认情况下，旋转框是白色的，虽然按钮是灰色的，但我们可以更改颜色。只有当光标在旋转框上时才会出现此背景颜色。

为此，我们必须更改与旋转框关联的样式表，下面是样式表代码

QSpinBox::hover
{
border : 1px solid green;
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 spin box
        self.spin = QSpinBox(self)
  
        # setting geometry to spin box
        self.spin.setGeometry(100, 100, 250, 40)
  
        # setting prefix to spin
        self.spin.setPrefix("Prefix ")
  
        # setting suffix to spin
        self.spin.setSuffix(" Suffix")
  
        # setting style sheet of spin box
        # adding background color when mouse hover over it
        self.spin.setStyleSheet("QSpinBox::hover"
                                "{"
                                "border : 1px solid green;"
                                "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 ：