NtQueryKey - NtDoc

Native API online documentation, based on the System Informer (formerly Process Hacker) phnt headers
#ifndef _NTREGAPI_H

/**
 * Queries information about a registry key.
 * 
 * @param[in] KeyHandle A handle to the key to be queried.
 * @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
NtQueryKey(
    _In_ HANDLE KeyHandle,
    _In_ KEY_INFORMATION_CLASS KeyInformationClass,
    _Out_writes_bytes_to_opt_(Length, *ResultLength) PVOID KeyInformation,
    _In_ ULONG Length,
    _Out_ PULONG ResultLength
    );

#endif

View code on GitHub
#ifndef _NTZWAPI_H

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

#endif

View code on GitHub

This function is documented in Windows Driver Kit.


See ZwQueryKey in NT DDK or 2000 DDK for detailed description.

See also