void setButtonsTrue() {
        GtkWidget *buttonRecord = glade_xml_get_widget(xml, "buttonRecord");
        GtkWidget *buttonPlay = glade_xml_get_widget(xml, "buttonPlay");

        gtk_widget_set_sensitive(buttonRecord, TRUE);
        gtk_widget_set_sensitive(buttonPlay, TRUE);
}

void setButtonsFalse() {
        GtkWidget *buttonRecord = glade_xml_get_widget(xml, "buttonRecord");
        GtkWidget *buttonPlay = glade_xml_get_widget(xml, "buttonPlay");

        gtk_widget_set_sensitive(buttonRecord, FALSE);
        gtk_widget_set_sensitive(buttonPlay, FALSE);
}


void record(void *args) {
        g_idle_add(setButtonsFalse, NULL);
        sleep(2);
        g_idle_add(setButtonsTrue, NULL);
}


code from recordclick:

                GError *error;

                /* Start record Thread */

        //      setButtonsFalse();

                if (!g_thread_create(record, NULL, FALSE, &error)) {
                        /* GError free? */
                        g_error ("Failed to create record thread: %s\n", error->message);
                }