NtAlpcCancelMessage - NtDoc

#ifndef _NTLPCAPI_H
// begin_private
#if (PHNT_VERSION >= PHNT_VISTA)

NTSYSCALLAPI
NTSTATUS
NTAPI
NtAlpcCancelMessage(
    _In_ HANDLE PortHandle,
    _In_ ULONG Flags,
    _In_ PALPC_CONTEXT_ATTR MessageContext
    );

#endif
// end_private
#endif
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#ifndef _NTZWAPI_H

NTSYSCALLAPI
NTSTATUS
NTAPI
ZwAlpcCancelMessage(
    _In_ HANDLE PortHandle,
    _In_ ULONG Flags,
    _In_ PALPC_CONTEXT_ATTR MessageContext
    );

#endif
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