LVGL 控件拖拽

static void drag_event_handler(lv_event_t *e)
{
    lv_obj_t *obj = lv_event_get_target(e);

    lv_indev_t *indev = lv_indev_get_act();
    if (indev == NULL)
        return;

    lv_point_t vect;
    lv_indev_get_vect(indev, &vect);

    lv_coord_t x =  lv_obj_get_x(obj) + vect.x;
    lv_coord_t y = lv_obj_get_y(obj); // + vect.y;

    lv_obj_set_pos(obj, x, y);

}


//拖拽控件
int app_drag_item(lv_obj_t *parent)
{
    lv_obj_t *obj;
    obj = lv_obj_create(parent);
    lv_obj_set_size(obj, 120, 240);
    lv_obj_add_event_cb(obj, drag_event_handler, LV_EVENT_PRESSING, NULL);

    lv_obj_t *label = lv_label_create(obj);
    lv_label_set_text(label, "Drag me");
    lv_obj_center(label);
    return 0;
}