#ifndef _NTREGAPI_H

/**
 * Enumerates the subkeys of a registry key.
 * 
 * @param[in] KeyHandle A handle to the key to be enumerated.
 * @param[in] Index The index of the subkey to be enumerated.
 * @param[in] KeyInformationClass The type of information to be queried.
 * @param[out] KeyInformation A pointer to a buffer that receives the key information.
 * @param[in] Length The size of the buffer.
 * @param[out] ResultLength A pointer to a variable that receives the size of the data returned.
 * @return NTSTATUS Successful or errant status.
 */
NTSYSCALLAPI
NTSTATUS
NTAPI
NtEnumerateKey(
    _In_ HANDLE KeyHandle,
    _In_ ULONG Index,
    _In_ KEY_INFORMATION_CLASS KeyInformationClass,
    _Out_writes_bytes_to_opt_(Length, *ResultLength) PVOID KeyInformation,
    _In_ ULONG Length,
    _Out_ PULONG ResultLength
    );

#endif
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#ifndef _NTZWAPI_H

NTSYSCALLAPI
NTSTATUS
NTAPI
ZwEnumerateKey(
    _In_ HANDLE KeyHandle,
    _In_ ULONG Index,
    _In_ KEY_INFORMATION_CLASS KeyInformationClass,
    _Out_writes_bytes_to_opt_(Length, *ResultLength) PVOID KeyInformation,
    _In_ ULONG Length,
    _Out_ PULONG ResultLength
    );

#endif
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