PyQt5 – 鼠标悬停时可编辑组合框的背景图像

在本文中，我们将了解如何在组合框可编辑并将鼠标悬停在其上时将背景图像设置为组合框。默认情况下，组合框没有图像，尽管我们可以为其设置图像。只有当组合框处于可编辑状态并将鼠标悬停在其上时，才会出现背景图像。组合框的可编辑状态是当用户设置文本到组合框时，普通的组合框可以在 setEditable 方法的帮助下进行编辑。
为此，我们必须更改与组合框关联的样式表，以下是样式表代码 -

QComboBox::editable:hover
{
background-image : url(image.png);
border :1px solid black;
}

注意：组合框和文本视图是不同的东西组合框由文本视图组成
下面是实现——

Python3

# 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 check-able combo box object
        self.combo_box = QComboBox(self)
 
        # making combo box editable
        self.combo_box.setEditable(True)
 
        # setting geometry of combo box
        self.combo_box.setGeometry(200, 150, 200, 80)
 
        # geek list
        geek_list = ["Sayian", "Super Sayian", "Super Sayian 2", "Super Sayian B"]
 
        # adding list of items to combo box
        self.combo_box.addItems(geek_list)
 
        # setting style sheet of the combo box
        # adding background image to the combo box it is in editable state
        # and when mouse hover over it
        self.combo_box.setStyleSheet("QComboBox::editable:hover"
                                     "{"
                                     "background-image : url(logo.png);"
                                     "border : 2px solid black;"
                                     "}")
 
# create pyqt5 app
App = QApplication(sys.argv)
 
# create the instance of our Window
window = Window()
 
window.show()
 
# start the app
sys.exit(App.exec())

输出 ：