#ifndef _NTLPCAPI_H
// begin_private

/**
 * The AlpcGetHeaderSize routine retrieves the size of the ALPC message header.
 *
 * \param Flags Flags influencing the header size.
 * \return ULONG The size of the header.
 */
NTSYSAPI
ULONG
NTAPI
AlpcGetHeaderSize(
    _In_ ULONG Flags
    );

// end_private
#endif
View code on GitHub