In this article we will see how user entered item don’t get added in the combo box i.e when user insert item in the editable combo box it do not get inserted at the any position of the drop down list, by default when user insert any item it get inserted at the bottom.
If we use normal i.e non editable combo box user is not able to add any item to the combo box, but editable combo box allow user to edit the item or search the item from the item list. Sometimes there is a need where combo box should be editable and also it do not insert any item for example in a combo box of selecting country, editable combo box will help of search country and it will not allow user to add another item.
In order to make combo box such that item inserted by user don’t get added in the drop down list we have to do the following –
1. Create a combo box
2. Make the combo box editable using setEditable method
3. Set insertion policy of combo box to do not insert
4. Create label
5. Retrieve the insertion policy and show it with the help of label
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, 120, 30) # geek list geek_list = ["Geek", "Geeky Geek"] # adding list of items to combo box self.combo_box.addItems(geek_list) # creating editable combo box self.combo_box.setEditable(True) # setting insertion policy # stopping insertion self.combo_box.setInsertPolicy(QComboBox.NoInsert) # getting current insertion policy policy = self.combo_box.insertPolicy() # creating label to print the policy label = QLabel("Insertion policy = " + str(policy), self) # setting geometry of the label label.setGeometry(200, 100, 200, 30)# create pyqt5 appApp = QApplication(sys.argv)# create the instance of our Windowwindow = Window()# start the appsys.exit(App.exec()) |
Output :
