window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
- gtk_window_set_default_size (GTK_WINDOW (window), 100, 100);
+ gtk_window_set_default_size (GTK_WINDOW (window), 256, 256);
g_signal_connect (window, "delete-event",
G_CALLBACK (on_delete_event_quit), NULL);