drop down list for little vGL

static void drop_down_list_event_handler(lv_obj_t* obj, lv_event_t event)
{
    if (event == LV_EVENT_VALUE_CHANGED)
    {
        char buf[32];
        lv_ddlist_get_selected_str(obj, buf, sizeof(buf));
        printf("option: %s\n", buf);
    }
}

void drop_down_list_demo(void)
{
    lv_obj_t* ddlist = lv_ddlist_create(lv_scr_act(), NULL);
    lv_ddlist_set_options(ddlist, "Apple\n"
        "Banana\n"
        "Orange\n"
        "Melon\n"
        "Grape\n"
        "Raspberry"
    );

    lv_ddlist_set_fix_width(ddlist, 150);
    lv_ddlist_set_draw_arrow(ddlist, true);
    lv_obj_align(ddlist, NULL, LV_ALIGN_IN_TOP_LEFT, 20, 20);
    lv_obj_set_event_cb(ddlist, drop_down_list_event_handler);


    //drop up list

    ddlist = lv_ddlist_create(lv_scr_act(), NULL);
    lv_ddlist_set_options(ddlist, "Apple2\n"
        "Banana2\n"
        "Orange2\n"
        "Melon2\n"
        "Grape2\n"
        "Raspberry2"
    );
    lv_ddlist_set_fix_width(ddlist, 150);
    lv_ddlist_set_fix_height(ddlist, 150);
    lv_ddlist_set_draw_arrow(ddlist, true);
    lv_obj_set_auto_realign(ddlist, true);
    lv_obj_align(ddlist, NULL, LV_ALIGN_IN_BOTTOM_MID, 0, -20);

    lv_obj_set_event_cb(ddlist, drop_down_list_event_handler);


}