118     lv_obj_t * calendar = lv_obj_get_parent(obj);  in my_constructor()  local
124     lv_obj_add_event_cb(year_dd, year_event_cb, LV_EVENT_VALUE_CHANGED, calendar);  in my_constructor()
129     lv_obj_add_event_cb(month_dd, month_event_cb, LV_EVENT_VALUE_CHANGED, calendar);  in my_constructor()
140     lv_obj_t * calendar = lv_event_get_user_data(e);  in month_event_cb()  local
145     d = lv_calendar_get_showed_date(calendar);  in month_event_cb()
149     lv_calendar_set_showed_date(calendar, newd.year, newd.month);  in month_event_cb()
155     lv_obj_t * calendar = lv_event_get_user_data(e);  in year_event_cb()  local
160     d = lv_calendar_get_showed_date(calendar);  in year_event_cb()
171     lv_calendar_set_showed_date(calendar, newd.year, newd.month);  in year_event_cb()
177     lv_obj_t * calendar = lv_obj_get_parent(header);  in value_changed_event_cb()  local
178     const lv_calendar_date_t * cur_date = lv_calendar_get_showed_date(calendar);  in value_changed_event_cb()