main.py 文件源码

def __init__(self):
        app = get_qtapp()
        super(MainWindow, self).__init__()

        app.installEventFilter(self)

        self._central_widget = QtWidgets.QWidget(self)
        self._layout = QtWidgets.QStackedLayout(self._central_widget)
        self.setCentralWidget(self._central_widget)

        status_bar = QtWidgets.QStatusBar(self)
        self.setStatusBar(status_bar)
        self._statusbar_label = QtWidgets.QLabel("status")
        status_bar.addPermanentWidget(self._statusbar_label)

        self.show()