pub unsafe extern "C" fn XRRGetProviderProperty(
    dpy: *mut Display,
    provider: RRProvider,
    property: Atom,
    offset: c_long,
    length: c_long,
    _delete: Bool,
    pending: Bool,
    req_type: Atom,
    actual_type: *mut Atom,
    actual_format: *mut c_int,
    nitems: *mut c_ulong,
    bytes_after: *mut c_ulong,
    prop: *mut *mut c_uchar
) -> c_int