from PyQt5.QtCore import QSettingsfrom PyQt5.QtWidgets import QApplication, QMainWindow, QListWidg

from PyQt5.QtCore import QSettings

from PyQt5.QtWidgets import QApplication, QMainWindow, QListWidget, QVBoxLayout, QWidget

class LabelIndexListConfigManager:
    labelNameList=["序号", "图标", "金额", "付款人", "时间"]

    _instance = None
    def __new__(cls):
        if cls._instance is None:
            cls._instance = super(LabelIndexListConfigManager, cls).__new__(cls)
            cls._instance.settings = QSettings("MyCompany", "MyApp")  # 存储位置
        return cls._instance
    def save_list_order(self, key, order):
        self.settings.setValue(key, order)
    def load_list_order(self, key, default=None):
        result=self.settings.value(key, default)
        print(result)
        return result

class MainWindow(QMainWindow):
    def __init__(self):
        super().__init__()
        self.list_widget = QListWidget(self)
        self.list_widget.setDragDropMode(QListWidget.InternalMove)
        sel