pub unsafe fn JetUnregisterCallback<P0, P1, P2>(
    sesid: P0,
    tableid: P1,
    cbtyp: u32,
    hcallbackid: P2
) -> i32
where P0: IntoParam<JET_SESID>, P1: IntoParam<JET_TABLEID>, P2: IntoParam<JET_HANDLE>,