pyqt5 带有复选框的可多选的Combox

#pyqt5 带有复选框的可多选的Combox#

## 扩展字 QCombox

案例截图

## 代码

from PyQt5.QtWidgets import QComboBox, QLineEdit, QListWidgetItem, QListWidget, QCheckBox, \
    QApplication, QVBoxLayout, QWidget, QPushButton
import sys


# Ctrl+Alt+L 自动格式化代码
"""
# 多选Combox框1
class ComboCheckBox(QComboBox):
    def __init__(self, items: list):
        super(ComboCheckBox, self).__init__()
        self.items = ["全选"] + items  # items list
        self.box_list = []  # selected items
        self.text = QLineEdit()  # use to selected items
        self.state = 0  # use to record state
        q = QListWidget()
        for i in range(len(self.items)):
            self.box_list.append(QCheckBox())
            self.box_list[i].setText(self.items[i])
            item = QListWidgetItem(q)
            q.setItemWidget(item, self.box_list[i])
            if i == 0:
                self.box_list[i].stateChanged.connect(self.all_selected)
            else:
                self.box_list[i].stateChanged.connect(self.show_selected)
        q.setStyleSheet("font-size: 18px;  height: 35px; m