feat(qt-examples): add pyqt6__ask_before_close.py

Author: gil9red

qt__pyqt__pyside__pyqode/pyqt6__ask_before_close.py

@@ -0,0 +1,49 @@
+#!/usr/bin/env python3
+# -*- coding: utf-8 -*-
+
+__author__ = "ipetrash"
+
+
+import sys
+
+from PyQt6.QtWidgets import QWidget, QApplication, QPushButton, QVBoxLayout, QMessageBox
+from PyQt6.QtGui import QCloseEvent
+
+
+class MainWindow(QWidget):
+    def __init__(self) -> None:
+        super().__init__()
+
+        button = QPushButton("Close")
+        button.clicked.connect(self.close)
+
+        layout = QVBoxLayout()
+        layout.addWidget(button)
+
+        self.setLayout(layout)
+
+    def closeEvent(self, event: QCloseEvent | None) -> None:
+        if not event:
+            return
+
+        reply = QMessageBox.question(
+            self,
+            "Quit",
+            "Are you sure you want to quit?",
+            QMessageBox.StandardButton.Yes,
+            QMessageBox.StandardButton.No,
+        )
+
+        if reply == QMessageBox.StandardButton.Yes:
+            event.accept()
+        else:
+            event.ignore()
+
+
+if __name__ == "__main__":
+    app = QApplication(sys.argv)
+
+    mw = MainWindow()
+    mw.show()
+
+    sys.exit(app.exec())