PyQt5 – 检查组合框中是否允许重复的值
在这篇文章中,我们将看到如何检查组合框中是否允许重复的插入。默认情况下,不允许重复插入,尽管以编程方式在组合框中插入重复的项目是可能的,但用户不能插入重复的值。为了允许重复插入,我们将使用setDuplicatesEnabled方法。
为了知道是否允许重复的值,我们使用diplicatesEnabled。
语法: combo_box.duplicatesEnabled()
参数: 它不需要参数
返回: 它返回bool
下面是实现方法
# 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, 120, 30)
# geek list
geek_list = ["Geek", "Geeky Geek"]
# adding list of items to combo box
self.combo_box.addItems(geek_list)
# making it editable combo box
self.combo_box.setEditable(True)
# allowing duplication of items
# setting duplicates = True
self.combo_box.setDuplicatesEnabled(True)
# checking if duplicates are allowed or not
check = self.combo_box.duplicatesEnabled()
# creating label to show check
label = QLabel("Duplicates allowed ? : " + str(check), self)
# setting geometry of label
label.setGeometry(200, 200, 200, 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 :