PyQt5 – Adding action to the ComboBox

Last Updated : 22 Apr, 2020

In this article we will see how we can add action to the combo box. Action is basically a method called by the combo box when it gets changes these changes can be new item get inserted by user or any item get selected by the user.

In order to do this we will use activated.connect method.

Syntax : combo_box.activated.connect(self.do_something)

Argument : It takes method name which should get called as argument

Return : None

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) 
  
        # geek list 
        geek_list = ["Sayian", "Super Sayian"] 
  
        # making it editable 
        self.combo_box.setEditable(True) 
  
        # adding list of items to combo box 
        self.combo_box.addItems(geek_list) 
  
        # adding action to combo box 
        self.combo_box.activated.connect(self.do_something) 
  
    # method called by combo box 
    def do_something(self): 
          
        # printing something 
        print("Something Something") 
  
# create pyqt5 app 
App = QApplication(sys.argv) 
  
# create the instance of our Window 
window = Window() 
  
# start the app 
sys.exit(App.exec()) 