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KEY_VALUE_BASIC_INFORMATION structure (wdm.h)

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The KEY_VALUE_BASIC_INFORMATION structure defines a subset of the full information available for a value entry of a registry key.

Syntax

typedef struct _KEY_VALUE_BASIC_INFORMATION {
  ULONG TitleIndex;
  ULONG Type;
  ULONG NameLength;
  WCHAR Name[1];
} KEY_VALUE_BASIC_INFORMATION, *PKEY_VALUE_BASIC_INFORMATION;

Members

TitleIndex

Device and intermediate drivers should ignore this member.

Type

Specifies the system-defined type for the value entry in the registry key, which is one of the following:

REG_XXX type Value
REG_BINARY Binary data in any form
REG_DWORD A 4-byte numerical value
REG_DWORD_LITTLE_ENDIAN A 4-byte numerical value whose least significant byte is at the lowest address
REG_DWORD_BIG_ENDIAN A 4-byte numerical value whose least significant byte is at the highest address
REG_EXPAND_SZ A null-terminated Unicode string, containing unexpanded references to environment variables, such as "%PATH%"
REG_LINK A Unicode string naming a symbolic link. This type is irrelevant to device and intermediate drivers
REG_MULTI_SZ An array of null-terminated strings, terminated by another zero
REG_NONE Data with no particular type
REG_SZ A null-terminated Unicode string
REG_RESOURCE_LIST A device driver's list of hardware resources, used by the driver or one of the physical devices it controls, in the \ResourceMap tree
REG_RESOURCE_REQUIREMENTS_LIST A device driver's list of possible hardware resources it or one of the physical devices it controls can use, from which the system writes a subset into the \ResourceMap tree
REG_FULL_RESOURCE_DESCRIPTOR A list of hardware resources that a physical device is using, detected and written into the \HardwareDescription tree by the system

NameLength

Specifies the size in bytes of the following value entry name.

Name[1]

A string of Unicode characters naming a value entry of the key.

Remarks

A kernel-mode driver can obtain a KEY_VALUE_BASIC_INFORMATION that describes a registry key by calling the ZwQueryValueKey or ZwEnumerateValueKey routine.

Requirements

Requirement Value
Header wdm.h (include Wdm.h, Ntddk.h, Ntifs.h)

See also

KEY_VALUE_FULL_INFORMATION

KEY_VALUE_INFORMATION_CLASS

KEY_VALUE_PARTIAL_INFORMATION

ZwEnumerateValueKey

ZwQueryValueKey