from PyQt4 import QtGui __author__ = 'sidya' class MyQWidget(QtGui.QWidget): def __init__(self, main): super(MyQWidget, self).__init__() self.__main = main def closeEvent(self, event): result = QtGui.QMessageBox.question(self, "Confirmer Fermeture...", "Etes vous sur de vouloir quitter ?\n", QtGui.QMessageBox.Yes | QtGui.QMessageBox.No) event.ignore() if result == QtGui.QMessageBox.Yes: event.accept() self.__main.showWindow()