PyQt5 – 检查组合框中的下拉项是否被隐藏

在这篇文章中，我们将看到如何从下拉框中检查组合框的项目是否隐藏，即从视图框中检查。为了做到这一点，我们必须得到组合框的视图对象，并且必须检查它。

为了 检查这些项目是否被隐藏，我们必须做以下步骤

1.创建组合框

2.向组合框添加项目

3.获取组合框的视图对象

4.检查视图对象是否为隐藏状态

5.创建标签以显示隐藏状态

语法:

# getting view part of combo box
view = self.combo_box.view()

# checking if the view object is hidden or not
status = view.isHidden()

以下是实施情况

# 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", "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 view part of combo box
        view = self.combo_box.view()
  
        # making view box hidden
        view.setHidden(True)
  
        # checking if the view object is hidden or not
        status = view.isHidden()
  
        # creating label to show the status
        label = QLabel("Hidden ?: " + str(status), self)
  
        # setting geometry of the label
        label.setGeometry(200, 100, 300, 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 :