lv_obj_remove_event_cb(obj,event_cb); event_cb是回调函数的名字,可以自定义 事件获取,比如按下,长按等 lv_event_code_t code=lv_event_get_code(e);//e是回调函数的形参 触发事件的部件获取,如滚轮,进度条部件 lv_obj_t *target =lv_event_get_target(e); lv_obj_t*target=lv_event_get_targe...
一、首先创建需要响应的OBJ 以lvgl开关obj为例 lv_obj_t* sw; sw =lv_switch_create(lv_scr_act()); 二、给其添加事件 首先定义回调函数 static void event_handler(lv_event_t * e) {lv_event_code_tcode = lv_event_get_code(e); lv_obj_t * obj = lv_event_get_target(e); if(code ==...
如果需要调整控件的尺寸,可以使用函数,lv_obj_set_width()和lv_obj_set_height()分别调整长宽,或使用lv_obj_set_size()一并调整: lv_obj_t* cont =lv_obj_create(lv_scr_act());lv_obj_t* label =lv_label_create(cont);lv_label_set_text(label,"Helllllo, world!");lv_obj_set_size(cont,16...
lv_obj_t* kb = lv_event_get_target(e);// 获取当前事件对象,也就是键盘对象 lv_obj_t* ta = lv_keyboard_get_textarea(kb);// 获取与键盘绑定的输入缓冲区的对象 lv_keyboard_set_textarea(kb,NULL);// 取消键盘的关联 lv_obj_add_flag(kb, LV_OBJ_FLAG_HIDDEN);// 添加键盘隐藏标志,隐藏键...
lv_obj_t * btn = lv_event_get_target(e); if(code == LV_EVENT_CLICKED) { static uint8_t cnt = 0; cnt++; /*Get the first child of the button which is the label and change its text*/ lv_obj_t * label = lv_obj_get_child(btn, 0); ...
Introduce the problem @kisvegabor Hi, I noticed that the event-related API has been modified in this commit: 680d6d1. What is the reason for changing this API? Examples and cases https://developer.mozilla.org/en-US/docs/Web/API/Event/tar...
whenever i try to use the method lv_obj_add_event it will throw an undefined error so i cant add it nor set it To Reproduce type lv_obj_add_event(); it will be undefined tabview = lv_tabview_create(lv_scr_act(), NULL); lv_obj_t *tab1 = lv_tabview_add_tab(tabview, "Tab...
static void lv_textarea_event(const lv_obj_class_t * class_p, lv_event_t * e); static void cursor_blink_anim_cb(void * obj, int32_t show); static void pwd_char_hider_anim(void * obj, int32_t x); static void pwd_char_hider_anim_ready(lv_anim_t * a); ...
Lvlist 是一个ListView 控件 ,下面代码的运行结果是()Private void btnChange_Click(object sender,EventAr
* - lv_obj_assign_id: Called when a widget is created. Use a separate counter for each widget class as an ID. * - lv_obj_id_compare: Compare the ID to decide if it matches with a requested value. * - lv_obj_stringify_id: Return string-ified identifier, e.g. "button3". * ...