PyQt5 – 当鼠标悬停在可编辑的组合框上时，背景图像

在这篇文章中，我们将看到如何在可编辑的组合框上设置背景图片，并将鼠标悬停在它上面。默认情况下，组合框没有图像，尽管我们可以为它设置图像。只有当组合框处于可编辑状态并且鼠标悬停在它上面时，背景图像才会出现。组合框的可编辑状态是当用户在组合框中设置文本时，正常的组合框可以在setEditable方法的帮助下变得可编辑。
为了做到这一点，我们必须改变与组合框相关的样式表，下面是样式表代码 –

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

注：组合框和文本视图是不同的东西，组合框由文本视图组成
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 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())