Function lvgl_sys::lv_obj_add_event_cb

pub unsafe extern "C" fn lv_obj_add_event_cb(
    obj: *mut _lv_obj_t,
    event_cb: lv_event_cb_t,
    filter: lv_event_code_t,
    user_data: *mut c_void
) -> *mut _lv_event_dsc_t