#ifndef _NTLPCAPI_H
// begin_private

/**
 * The NtAlpcCancelMessage routine cancels a pending ALPC message.
 *
 * \param PortHandle Handle to the ALPC port.
 * \param Flags Cancellation flags.
 * \param MessageContext Context identifying the message to cancel.
 * \return NTSTATUS Successful or errant status.
 */
_Kernel_entry_
NTSYSCALLAPI
NTSTATUS
NTAPI
NtAlpcCancelMessage(
    _In_ HANDLE PortHandle,
    _In_ ULONG Flags,
    _In_ PALPC_CONTEXT_ATTR MessageContext
    );

// end_private
#endif
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#ifndef _NTZWAPI_H

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

#endif
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