pub unsafe extern "C" fn lv_timer_create(
timer_xcb: lv_timer_cb_t,
period: u32,
user_data: *mut c_void,
) -> *mut lv_timer_tpub unsafe extern "C" fn lv_timer_create(
timer_xcb: lv_timer_cb_t,
period: u32,
user_data: *mut c_void,
) -> *mut lv_timer_t