PyQt5 - 如何根据项目大小调整组合框的大小

在本文中，我们将看到如何根据项目列表中具有最大大小的项目，根据项目的大小调整组合框。默认情况下，我们使用setGeometry方法和setSize方法来调整大小，但它不会根据项目大小自动调整大小。

为了根据最大长度项目大小调整大小，我们使用adjustSize方法

Syntax : combo_box.adjustSize()

Argument : It takes no argument

Return : None

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, 200, 50)
  
        # geek list
        geek_list = ["Sayian", "Super Saiyan", "Super Sayian 2", "Super Sayian Blue"]
  
        # making it editable
        self.combo_box.setEditable(True)
  
        # adding list of items to combo box
        self.combo_box.addItems(geek_list)
  
        # adjusting the size according to the maximum sized element
        self.combo_box.adjustSize()
  
  
  
# create pyqt5 app
App = QApplication(sys.argv)
  
# create the instance of our Window
window = Window()
  
# start the app
sys.exit(App.exec())

输出 ：