PyQt5 - 检查下拉项目是否在 ComboBox 中隐藏

在本文中，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。为此，我们必须获取组合框的视图对象并且必须对其进行检查。

In order to check if the items are hidden or not we have to do the following steps –

1. Create Combo box
2. Add items to the combo box
3. Get the view object of combo box
4. Check if the view object is hidden or not
5. Create label to show the hidden status

编程需要懂一点英语

句法：

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

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

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 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：