pyqt 关闭事件的问题 AttributeError: 'RegisterWindow' object has no attribute 'closed'. Did you mean: 'close'?

self.registerWin.closed.connect(self.on_reg_window_closed) 这行代码运行的时候报错 AttributeError: 'RegisterWindow' object has no attribute 'closed'. Did you mean: 'close'?

RegisterWindow 继承于 QWidget class RegisterWindow(QWidget):

就是现在如果我想实现子窗口打开的时候主窗口隐藏, 反之显示, 所以这里需要用一个子窗口的关闭事件, 但是出现这个问题如何解决?

# -*- coding: utf-8 -*- from PyQt6.QtWidgets import QApplication, QWidget, QLabel, QLineEdit, QPushButton, QVBoxLayout from registerWindow import RegisterWindow from PyQt6 import QtCore, QtWidgets class LoginWindow(QWidget): def __init__(self): super().__init__() # 设置窗口大小 self.setGeometry(200, 200, 400, 200) # 创建控件 self.username_label = QLabel('用户名') self.username_input = QLineEdit() self.password_label = QLabel('密码') self.password_input = QLineEdit() self.login_button = QPushButton('登录') self.register_button = QPushButton('注册') # 创建布局 layout = QVBoxLayout() layout.addWidget(self.username_label) layout.addWidget(self.username_input) layout.addWidget(self.password_label) layout.addWidget(self.password_input) layout.addWidget(self.login_button) layout.addWidget(self.register_button) # 设置布局 self.setLayout(layout) # 子窗口 self.registerWin = RegisterWindow() self.registerWin.closed.connect(self.on_reg_window_closed) # 连接信号和槽 self.login_button.clicked.connect(self.on_login_button_clicked) self.register_button.clicked.connect(self.on_register_button_clicked) def on_sub_window_closed(self): # 子窗口已关闭 print("子窗口已关闭") def on_login_button_clicked(self): username = self.username_input.text() password = self.password_input.text() # 在这里可以添加验证用户输入的代码，如果验证通过则可以跳转到主界面 def on_register_button_clicked(self): self.hide() self.registerWin.show() def on_reg_window_closed(self): self.show() if __name__ == '__main__': app = QApplication([]) login_window = LoginWindow() login_window.show() app.exec()