In this article we will see how we can get the root model index of the combo box. Root model index can be set/changed with the help of setRootModelIndex method, this sets the root model index for the items of the combo box, in order to get the root model index we use rootModelIndex method.
Syntax : combo_box.rootModelIndex() Argument : It takes no argument Return : It returns QModelIndex object
Below is the implementation –
Python3
# importing librariesfrom PyQt5.QtWidgets import *from PyQt5 import QtCore, QtGuifrom PyQt5.QtGui import *from PyQt5.QtCore import *import sysclass 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) # creating a model model = QtGui.QStandardItemModel(0, 1) # creating a item item = QtGui.QStandardItem("New model") # adding item to the model model.appendRow(item) # setting model to the combo box self.combo_box.setModel(model) # geek list geek_list = ["Sayian", "Super Sayian", "Super Sayian 2", "Super Sayian B"] # making it editable self.combo_box.setEditable(True) # adding list of items to combo box self.combo_box.addItems(geek_list) # getting root model index root_index = self.combo_box.rootModelIndex() # creating label to show root model index label = QLabel("R.M.I = " + str(root_index), self) # setting geometry to the label label.setGeometry(200, 100, 300, 30)# create pyqt5 appApp = QApplication(sys.argv)# create the instance of our Windowwindow = Window()# start the appsys.exit(App.exec()) |
Output : 
