gtk_window_set_transient_for (GTK_WINDOW (ex_d.stats_dialog), GTK_WINDOW (de));
gtk_window_set_transient_for (GTK_WINDOW (ex_d.opts_dialog), GTK_WINDOW (de));
gtk_window_set_transient_for (GTK_WINDOW (ex_d.stats_dialog), GTK_WINDOW (de));
gtk_window_set_transient_for (GTK_WINDOW (ex_d.opts_dialog), GTK_WINDOW (de));