import sys
from PySide6.QtWidgets import QApplication, QMainWindow, QPushButton, QDialog, QVBoxLayout
class ParentWindow(QMainWindow):
def __init__(self):
super().__init__()
self.setWindowTitle("Родительское окно")
button = QPushButton("Открыть дочернее окно", self)
button.clicked.connect(self.openChildWindow)
def openChildWindow(self):
child_window = ChildWindow(self)
child_window.show()
class ChildWindow(QDialog):
def __init__(self, parent=None):
super().__init__(parent)
self.setWindowTitle("Дочернее окно")
layout = QVBoxLayout()
layout.addWidget(QPushButton("Пример кнопки", self))
self.setLayout(layout)
if __name__ == "__main__":
app = QApplication(sys.argv)
main_window = ParentWindow()
main_window.show()
sys.exit(app.exec_())