NtQueryOpenSubKeysEx - NtDoc

#ifndef _NTREGAPI_H

/**
 * Queries the open subkeys of a registry key with additional information.
 * 
 * @param TargetKey Pointer to the object attributes of the target key.
 * @param BufferLength Length of the buffer.
 * @param Buffer Optional buffer to receive the subkey information.
 * @param RequiredSize Pointer to a variable to receive the required size.
 * @return NTSTATUS Successful or errant status.
 * @remarks Returns an array of KEY_OPEN_SUBKEYS_INFORMATION structures.
 */
NTSYSCALLAPI
NTSTATUS
NTAPI
NtQueryOpenSubKeysEx(
    _In_ POBJECT_ATTRIBUTES TargetKey,
    _In_ ULONG BufferLength,
    _Out_writes_bytes_opt_(BufferLength) PVOID Buffer,
    _Out_ PULONG RequiredSize
    );

#endif
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#ifndef _NTZWAPI_H

NTSYSCALLAPI
NTSTATUS
NTAPI
ZwQueryOpenSubKeysEx(
    _In_ POBJECT_ATTRIBUTES TargetKey,
    _In_ ULONG BufferLength,
    _Out_writes_bytes_opt_(BufferLength) PVOID Buffer,
    _Out_ PULONG RequiredSize
    );

#endif
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