PyQt5 – 如何在 ComboBox 中获取项目委托

在本文中，我们将了解如何在组合框中获取项目委托。委托基本上是一个默认的安全类型对象，组合框使用它来指向另一个函数，我们可以在setItemDelegate方法的帮助下更改组合框的委托对象

为了获得组合框的委托对象，我们将使用itemDelegate()方法

Syntax : combo_box.itemDelegate()

Argument : It takes no argument

Return It returns QItemDelegate object

下面是实现

# 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 Saiyan", "Super Sayian 2", "Super Sayian B"]
  
        # adding list of items to combo box
        self.combo_box.addItems(geek_list)
  
        # getting delegate
        delegate = self.combo_box.itemDelegate()
  
        # creating label to show delegate
        label = QLabel("Delegate = " + str(delegate), self)
  
        # setting geometry of the label
        label.setGeometry(150, 100, 350, 30)
  
  
# create pyqt5 app
App = QApplication(sys.argv)
  
# create the instance of our Window
window = Window()
  
# start the app
sys.exit(App.exec())

输出 ：