PyQt5 – 在鼠标悬停时为不可编辑的组合框的行编辑部分设置背景色

在这篇文章中，我们将看到如何在鼠标悬停在不可编辑的组合框上时为其行编辑部分设置背景色，组合框的行编辑部分是显示和编辑文本的地方。

注意： 当我们在组合框中添加行编辑对象时，它使组合框可编辑，因此有必要使行编辑部分不可编辑。

为了在鼠标悬停在组合框的行编辑部分时为其添加背景色，请执行以下操作：

1.创建一个组合框

2.创建一个行编辑小组件

3.当鼠标悬停在行编辑部件上时，改变它的背景颜色

4.使行编辑不可编辑

5.在组合框中添加行编辑部件

语法:

# creating line edit widget
line_edit = QLineEdit()

# setting background color to the line edit widget
line_edit.setStyleSheet("QLineEdit::hover"
                        "{"
                        "background : lightblue;"
                        "}")

# making line edit non editable
line_edit.setReadOnly(True)

# adding line edit widget to combo box
self.combo_box.setLineEdit(line_edit)

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 combo box widget
        self.combo_box = QComboBox(self)
  
        # setting geometry of combo box
        self.combo_box.setGeometry(200, 150, 150, 30)
  
        # making combo box editable
        self.combo_box.setEditable(True)
  
        # 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)
  
        # creating line edit widget
        line_edit = QLineEdit()
  
        # setting background color to the line edit widget
        # when mouse hover over it
        line_edit.setStyleSheet("QLineEdit"
                                "{"
                                "background : lightblue;"
                                "}")
  
        # making line edit non editable
        line_edit.setReadOnly(True)
  
        # adding line edit widget to combo box
        self.combo_box.setLineEdit(line_edit)
  
  
# create pyqt5 app
App = QApplication(sys.argv)
  
# create the instance of our Window
window = Window()
  
# start the app
sys.exit(App.exec())