Handled close actions

init.py

@@ -10,15 +10,27 @@ MIT License
 """
 
 import sys
-from PyQt5.QtWidgets import QApplication, QMainWindow
+from PyQt5.QtWidgets import QApplication, QMainWindow, QMessageBox
 from ui_mainwindow import Ui_MainWindow
 
 class MainWindow(QMainWindow, Ui_MainWindow):
     def __init__(self, *args, **kwargs):
         super(MainWindow, self).__init__(*args, **kwargs)
         self.setupUi(self)
+
+        # Connect close actions
+        self.b_cancel.clicked.connect(self.close)
+        self.ma_close.triggered.connect(self.close)
+
         self.show()
 
+    def close(self):
+        reply = QMessageBox.question(self, "Sicher?",
+            "Möchten Sie wirklich schließen?",
+            QMessageBox.Yes | QMessageBox.No, QMessageBox.No)
+        if reply == QMessageBox.Yes:
+            sys.exit(0)
+
 if __name__ == "__main__":
     app = QApplication([])
     app.setApplicationName("WikiCookBook")