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PyQt5 – Add border to drop arrow of ComboBox when pressed

  • Last Updated : 01 Dec, 2021

In this article we will see how we can can border to the drop arrow of the combo box when it get pressed. Drop arrow is basically a push button which when get pressed opens the list view. This customized border will only appear to the drop arrow when it get pressed.
In order to do so we have to change the style sheet associated with the combo box, below is the style sheet code 
 

QComboBox::drop-arrow:pressed
{
border : 2px solid green;
}

Below is the implementation 
 

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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)
 
        # 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 code of combo box
        # adding border to the drop arrow when it get pressed
        self.combo_box.setStyleSheet("QComboBox::down-arrow:pressed"
                                     "{"
                                     "border : 2px solid green;"
                                     "}")
 
 
# 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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