PyQt5 – Background color to editable OFF state ComboBox on mouse hover

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In this article we will see how to set the background color to the editable combo box which is currently in the OFF state and when hover over it. OFF state of the combo box is when the list menu is not opened. This background color will only appear if the combo box is editable and in OFF state and when cursor hover over combo box. Combo box is made editable with the help of setEditable method. In order to do so we have to change the style sheet code, below is the style sheet code

QComboBox::editable:!on:hover
{
background-color : lightgreen;
}

Below is the implementation

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 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)
 
        # adding background color to the combo box when it is editable
        # and when it is in OFF state and mouse hover over it
        self.combo_box.setStyleSheet("QComboBox::editable:! on: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())