TpAllocIoCompletion - NtDoc

#ifndef _NTTP_H
#if (PHNT_VERSION >= PHNT_VISTA)

// winbase:CreateThreadpoolIo
NTSYSAPI
NTSTATUS
NTAPI
TpAllocIoCompletion(
    _Out_ PTP_IO *IoReturn,
    _In_ HANDLE File,
    _In_ PTP_IO_CALLBACK Callback,
    _Inout_opt_ PVOID Context,
    _In_opt_ PTP_CALLBACK_ENVIRON CallbackEnviron
    );

#endif
#endif
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