#ifndef _NTIOAPI_H
//
// Wait completion packet
//
#if (PHNT_VERSION >= PHNT_WINDOWS_8)

NTSYSCALLAPI
NTSTATUS
NTAPI
NtCancelWaitCompletionPacket(
    _In_ HANDLE WaitCompletionPacketHandle,
    _In_ BOOLEAN RemoveSignaledPacket
    );

#endif
#endif
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#ifndef _NTZWAPI_H

NTSYSCALLAPI
NTSTATUS
NTAPI
ZwCancelWaitCompletionPacket(
    _In_ HANDLE WaitCompletionPacketHandle,
    _In_ BOOLEAN RemoveSignaledPacket
    );

#endif
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NTSTATUS NtCancelWaitCompletionPacket (
    _In_ HANDLE WaitCompletionPacketHandle,
    _In_ BOOLEAN RemoveSignaledPacket
    )
View the official Win32 development documentation

NtDoc

This function is documented in Windows SDK.

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Win32 development documentation (ntcancelwaitcompletionpacket)

NtCancelWaitCompletionPacket function

Cancels an active wait completion association if it has not been picked up from the completion port.

Parameters

WaitCompletionPacketHandle [in]

A handle to a wait completion packet.

RemoveSignaledPacket [in]

a boolean which determines whether this function will attempt to cancel a packet from an IO completion object queue.

Return value

An NTSTATUS code. For more information, see Using NTSTATUS values.

Value	Description
STATUS_SUCCESS	Success
STATUS_PENDING	The wait completion may be pending and the packet cannot be immediately reused.
STATUS_CANCELLED	The packet has already been completed or if has never been associated.

Remarks

This function has no associated import library or header file; you must call it using the LoadLibrary and GetProcAddress functions. The API is exported from ntdll.dll.

Requirements

Requirement	Value
DLL	ntdll.dll

View the official Win32 development documentation

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