#include "../lv_examples.h" #if LV_BUILD_EXAMPLES && LV_USE_SWITCH static void event_cb(lv_event_t * e) { LV_LOG_USER("Clicked"); static uint32_t cnt = 1; lv_obj_t * btn = lv_event_get_target(e); lv_obj_t * label = lv_obj_get_child(btn, 0); lv_label_set_text_fmt(label, "%"LV_PRIu32, cnt); cnt++; } /** * Add click event to a button */ void lv_example_event_1(void) { lv_obj_t * btn = lv_btn_create(lv_scr_act()); lv_obj_set_size(btn, 100, 50); lv_obj_center(btn); lv_obj_add_event_cb(btn, event_cb, LV_EVENT_CLICKED, NULL); lv_obj_t * label = lv_label_create(btn); lv_label_set_text(label, "Click me!"); lv_obj_center(label); } #endif