pub unsafe extern "system" fn NetUserEnum(
    servername: PCWSTR,
    level: u32,
    filter: NET_USER_ENUM_FILTER_FLAGS,
    bufptr: *mut *mut u8,
    prefmaxlen: u32,
    entriesread: *mut u32,
    totalentries: *mut u32,
    resume_handle: *mut u32
) -> u32