static void myBtn_event(lv_event_t *event) { lv_obj_t *btn = lv_event_get_target(event); // 获得调用这个回调函数的对象 if (event->code == LV_EVENT_CLICKED) { static uint8_t cnt = 0; cnt++; lv_obj_t *label = lv_obj_get_child(btn, NULL); // 获取第1个子对象(我们在设计...
•LV_EVENT_CLICKED 如果未拖动则调用释放(无论长按) •LV_EVENT_RELEASED 在上面每种情况下都被调用,即使对象已被拖动也被释放。如果在按下并从对象外部释放时从对象上滑出,则不会调用。在这种情况下,将发送 LV_EVENT_PRESS_LOST 指针相关的事件 这些事件仅由类似指针的输入设备(例如鼠标或触摸板)触发 ...
lv_event_code_tcode = lv_event_get_code(e);// 获取事件编码 lv_obj_t* ta = lv_event_get_target(e);// 获取文本对象 lv_obj_t* kb = (lv_obj_t*)lv_event_get_user_data(e);// 获取键盘对象 /* 获取文本点击事件 */ if(code == LV_EVENT_CLICKED) { lv_keyboard_set_textarea(kb...
if (event.code == LV_EVENT_CLICKED) { lv_scr_load_anim(page2, LV_SCR_LOAD_ANIM_OVER_LEFT, 300, 0, false); } } void create_page1(void) { // 创建页面1的内容 page1 = lv_obj_create(NULL); lv_obj_set_size(page1, LV_HOR_RES, LV_VER_RES); lv_obj_t * btn1 = lv_btn_...
lv_obj_t * btn = lv_button_create(lv_screen_active()); 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!"); ...
(code==LV_EVENT_CLICKED)// 接收到信号{lv_obj_del(obj);// 删除当前界面SetCurrentWindow(parentPage);// 设置当前界面为父界面,父界面,是界面创建时传入的一个指针,存储上一个界面。}}// 同样的,obj这个控件被点击时,也会发送LV_EVENT_CLICKED这个信号,也是进入上面这个函数// 所以触摸点击切换和按键...
LV_EVENT_CLICKED, /**< Called on release if not dragged (regardless to long press)*/ LV_EVENT_RELEASED, /**< Called in every cases when the object has been released*/ LV_EVENT_DRAG_BEGIN, LV_EVENT_DRAG_END, LV_EVENT_DRAG_THROW_BEGIN, ...
if(event == LV_EVENT_CLICKED) { printf("Clicked\n"); } else if(event == LV_EVENT_VALUE_CHANGED) { printf("Toggled\n"); } } void lv_ex_btn_1(void) { lv_obj_t * label; lv_obj_t * btn1 = lv_btn_create(lv_scr_act(), NULL); lv_obj_set_event_cb(btn1, event_handler...
在LVGL中,实现按钮界面跳转的函数可以通过lv_obj_set_event_cb()函数和lv_event_t枚举类型实现。具体代码如下: ``` void btn_event_cb(lv_event_t * event) { static lv_obj_t * screen2 = NULL; if(event->code == LV_EVENT_CLICKED) { if(!screen2) { ...
(code==LV_EVENT_CLICKED){LV_LOG_USER("Clicked");if(e->target==btn1)lv_label_set_text(label,"Start");elseif(e->target==btn2)lv_label_set_text(label,"Stop");}elseif(code==LV_EVENT_VALUE_CHANGED){LV_LOG_USER("Toggled");}}voidsetup(){Serial.begin(115200);StringLVGL_...