7     lv_obj_t * menu = lv_menu_create(lv_scr_act());  in lv_example_menu_3()  local
8     lv_obj_set_size(menu, lv_disp_get_hor_res(NULL), lv_disp_get_ver_res(NULL));  in lv_example_menu_3()
9     lv_obj_center(menu);  in lv_example_menu_3()
12     lv_obj_t * back_btn = lv_menu_get_main_header_back_btn(menu);  in lv_example_menu_3()
20     lv_obj_t * sub_1_page = lv_menu_page_create(menu, "Page 1");  in lv_example_menu_3()
26     lv_obj_t * sub_2_page = lv_menu_page_create(menu, "Page 2");  in lv_example_menu_3()
32     lv_obj_t * sub_3_page = lv_menu_page_create(menu, "Page 3");  in lv_example_menu_3()
39     lv_obj_t * main_page = lv_menu_page_create(menu, NULL);  in lv_example_menu_3()
44     lv_menu_set_load_page_event(menu, cont, sub_1_page);  in lv_example_menu_3()
49     lv_menu_set_load_page_event(menu, cont, sub_2_page);  in lv_example_menu_3()
54     lv_menu_set_load_page_event(menu, cont, sub_3_page);  in lv_example_menu_3()
56     lv_menu_set_page(menu, main_page);  in lv_example_menu_3()