GtkWidget *config = gtk_notebook_new();
g_signal_connect(window, "delete-event", G_CALLBACK(on_delete), NULL);
g_signal_connect(window, "key-press-event", G_CALLBACK(on_key_press), NULL);
GtkWidget *config = gtk_notebook_new();
g_signal_connect(window, "delete-event", G_CALLBACK(on_delete), NULL);
g_signal_connect(window, "key-press-event", G_CALLBACK(on_key_press), NULL);