我從菜單欄項(xiàng)啟動(dòng) GtkAboutDialog。這是切換對(duì)話框的函數(shù)：def open_about(self, *args):        x = about.run()        if x == -4:            # When pressing close;            about.destroy()如果我單擊有關(guān)項(xiàng)目的菜單欄一次，就沒有問題，對(duì)話框?qū)⒋蜷_，我可以按照您的預(yù)期將其關(guān)閉。但如果我再次單擊，則會(huì)出現(xiàn)一個(gè)空窗口。只能使用一次。(translate.py:31837): Gtk-CRITICAL **: 19:44:24.373: gtk_widget_show: assertion 'GTK_IS_WIDGET (widget)' failed(translate.py:31837): Gtk-CRITICAL **: 19:44:24.373: gtk_label_set_markup: assertion 'GTK_IS_LABEL (label)' failed(translate.py:31837): Gtk-CRITICAL **: 19:44:24.376: gtk_container_foreach: assertion 'GTK_IS_CONTAINER (container)' failed