NtCompressKey - NtDoc

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

#ifndef _NTREGAPI_H

/**
 * Compresses a registry key.
 * 
 * @param[in] KeyHandle A handle to the key to be compressed.
 * @return NTSTATUS Successful or errant status.
 */
NTSYSCALLAPI
NTSTATUS
NTAPI
NtCompressKey(
    _In_ HANDLE KeyHandle
    );

#endif
View code on GitHub

#ifndef _NTZWAPI_H

NTSYSCALLAPI
NTSTATUS
NTAPI
ZwCompressKey(
    _In_ HANDLE KeyHandle
    );

#endif
View code on GitHub

This function compress data associated with specified Key and all his sub-keys. Compressed key require smaller space in registry file, but whole functionality used with compressed key works slower.

Key

HANDLE of previously opened key object (with write access).

Documented by

Tomasz Nowak

Key

Documented by

See also