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PyQt5 – Adding border to editable combo box when mouse hover over it

Last Updated : 04 May, 2020
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In this article we will see how we can add border to the combo box when it is editable and mouse hover over it. By default combo box have border although we can change the border, combo box with customized border will only appear when it is editable and cursor is on it. Editable combo box can be made with the help of setEditable method

In order to do this we have to change the style sheet associated with the combo box, below is the style sheet code

QComboBox::editable:hover
{
border : 3px solid blue;
}

Below is the implementation




# 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)
  
        # editing style sheet code of combo box
        # adding border to the combo box when it is editable
        # and when mouse hover over it
        self.combo_box.setStyleSheet("QComboBox::editable:hover"
                                     "{"
                                     "border : 3px solid blue;"
                                     "}")
  
  
# create pyqt5 app
App = QApplication(sys.argv)
  
# create the instance of our Window
window = Window()
  
# start the app
sys.exit(App.exec())


Output :



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