LVGL 8.2 Simple Drop down list

Event handling callback function

static void event_handler(lv_event_t* e)
{
    
    lv_event_code_t code = lv_event_get_code(e); //  Get the event code generated by the object  
    lv_obj_t* obj = lv_event_get_target(e); //  Get the object that generated the event 
    if (code == LV_EVENT_VALUE_CHANGED) {
     //  Process value changed event 
        char buf[32];
        lv_dropdown_get_selected_str(obj, buf, sizeof(buf)); //  Get the text content of the selected object 
        LV_LOG_USER("Option: %s", buf); //  Print text content 
    }
}

establish dropdown

static void lv_example_dropdown_1(void)
{
    
    /*Create a normal drop down list*/
    lv_obj_t* dd = lv_dropdown_create(lv_scr_act());  // establish dropdown object 
    lv_dropdown_set_options(dd, "Apple\n"
        "Banana\n"
        "Orange\n"
        "Cherry\n"
        "Grape\n"
        "Raspberry\n"
        "Melon\n"
        "Orange\n"
        "Lemon\n"
        "Nuts"); //  Set drop-down list option content 
    lv_obj_align(dd, LV_ALIGN_TOP_MID, 0, 20); //LV_ALIGN_TOP_MID Alignment  
    lv_obj_add_event_cb(dd, event_handler, LV_EVENT_ALL, NULL); //  Add all events 
}

Running effect