KEY_INFORMATION_CLASS - NtDoc

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

/**
 * The KEY_INFORMATION_CLASS structure represents the type of information to supply about a registry key.
 * \sa https://learn.microsoft.com/en-us/windows-hardware/drivers/ddi/wdm/ne-wdm-_key_information_class
 */
typedef enum _KEY_INFORMATION_CLASS
{
    KeyBasicInformation, // KEY_BASIC_INFORMATION
    KeyNodeInformation, // KEY_NODE_INFORMATION
    KeyFullInformation, // KEY_FULL_INFORMATION
    KeyNameInformation, // KEY_NAME_INFORMATION
    KeyCachedInformation, // KEY_CACHED_INFORMATION
    KeyFlagsInformation, // KEY_FLAGS_INFORMATION
    KeyVirtualizationInformation, // KEY_VIRTUALIZATION_INFORMATION
    KeyHandleTagsInformation, // KEY_HANDLE_TAGS_INFORMATION
    KeyTrustInformation, // KEY_TRUST_INFORMATION
    KeyLayerInformation, // KEY_LAYER_INFORMATION
    MaxKeyInfoClass
} KEY_INFORMATION_CLASS;

#endif

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This enumeration is documented in Windows Driver Kit.