LVGL 8.2 Message box
message Box LVGL 8.2
2023-09-14 09:06:40 时间
事件处理函数
static void event_cb(lv_event_t* e)
{
lv_obj_t* obj = lv_event_get_current_target(e);
LV_LOG_USER("Button %s clicked", lv_msgbox_get_active_btn_text(obj));
}
创建message box
static void lv_example_msgbox_1(void)
{
static const char* btns[] = { "Apply", "Close", "" };
lv_obj_t* mbox1 = lv_msgbox_create(NULL, "Hello", "This is a message box with two buttons.", btns, true);
lv_obj_add_event_cb(mbox1, event_cb, LV_EVENT_VALUE_CHANGED, NULL);
lv_obj_center(mbox1);
}
运行效果
事件处理函数中修改内容和标题
static void event_cb(lv_event_t* e)
{
lv_obj_t* obj = lv_event_get_current_target(e);
uint16_t index = lv_msgbox_get_active_btn(obj);
LV_LOG_USER("Button %s clicked %d", lv_msgbox_get_active_btn_text(obj),index);
if (index == 0) {
lv_obj_t* txt = lv_msgbox_get_text(obj);
lv_label_set_text(txt, "123");
}
else {
lv_obj_t* title = lv_msgbox_get_title(obj);
lv_label_set_text(title, "456");
}
}
运行效果
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