KEY_BASIC_INFORMATION structure (wdm.h)

The KEY_BASIC_INFORMATION structure defines a subset of the full information that is available for a registry key.

Syntax

typedef struct _KEY_BASIC_INFORMATION {
  LARGE_INTEGER LastWriteTime;
  ULONG         TitleIndex;
  ULONG         NameLength;
  WCHAR         Name[1];
} KEY_BASIC_INFORMATION, *PKEY_BASIC_INFORMATION;

Members

LastWriteTime

The last time this key or any of its values changed. This time value is expressed in absolute system time format. Absolute system time is the number of 100-nanosecond intervals since the start of the year 1601 in the Gregorian calendar.

TitleIndex

Device and intermediate drivers should ignore this member.

NameLength

The size, in bytes, of the key name string in the Name array.

Name[1]

An array of wide characters that contains the name of the registry key. This character string is not null-terminated. Only the first element in this array is included in the KEY_BASIC_INFORMATION structure definition. The storage for the remaining elements in the array immediately follows this element.

Remarks

The ZwEnumerateKey and ZwQueryKey routines use the KEY_BASIC_INFORMATION structure to contain the basic information for a registry key. When the KeyInformationClass parameter of either routine is KeyBasicInformation, the KeyInformation buffer is treated as a KEY_BASIC_INFORMATION structure. For more information about the KeyBasicInformation enumeration value, see KEY_INFORMATION_CLASS.

Requirements

See also

KEY_CACHED_INFORMATION

KEY_FULL_INFORMATION

KEY_INFORMATION_CLASS

KEY_NAME_INFORMATION

KEY_NODE_INFORMATION

KEY_VIRTUALIZATION_INFORMATION

ZwEnumerateKey

ZwQueryKey