---

import sys

from PyQt6.QtWidgets import *

class CustomDialog(QDialog):
    def __init__(self):
        super().__init__()

        layout = QVBoxLayout()
        self.setLayout(layout)

        self.password_entry = QLineEdit()
        layout.addWidget(self.password_entry)

        self.button = QPushButton("test")
        self.button.clicked.connect(self.auth)
        layout.addWidget(self.button)

    def auth(self):
        password = self.password_entry.text()

        if password == "passwd":
                self.accept()


class App(QWidget):
    def __init__(self):
        super().__init__()

        layout = QVBoxLayout()
        self.setLayout(layout)

        self.label = QLabel("sucsses")
        layout.addWidget(self.label)

        dlg = CustomDialog()
        result = dlg.exec()

        if result != QDialog.DialogCode.Accepted:
             self.close()
             return
        
        self.show()

def main():
    app = QApplication(sys.argv)
    window = App()
    # window.show()
    sys.exit(app.exec())


if __name__ == "__main__":
    main()