/* Refresh an area if there is no Virtual Display Buffer  */
static void lv_refr_area_no_vdb(const lv_area_t *area_p)
/* Refresh an area if there is no Virtual Display Buffer  */
static void lv_refr_area_no_vdb(const lv_area_t *area_p)
{
    lv_obj_t * top_p;
    top_p = lv_refr_get_top_obj(area_p, lv_scr_act());
    lv_refr_obj_and_children(top_p, area_p);
    lv_refr_obj_and_children(lv_layer_top(), area_p);
    lv_refr_obj_and_children(lv_layer_sys(), area_p);
}