gtk_window_set_position (GTK_WINDOW (window), GTK_WIN_POS_CENTER);
gtk_window_set_modal (GTK_WINDOW (window), TRUE);
gtk_window_set_resizable(GTK_WINDOW (window), FALSE);
gtk_window_set_position (GTK_WINDOW (window), GTK_WIN_POS_CENTER);
gtk_window_set_modal (GTK_WINDOW (window), TRUE);
gtk_window_set_resizable(GTK_WINDOW (window), FALSE);