DIRECTORY_NOTIFY_INFORMATION_CLASS - NtDoc

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

// private
typedef enum _DIRECTORY_NOTIFY_INFORMATION_CLASS
{
    DirectoryNotifyInformation = 1, // FILE_NOTIFY_INFORMATION
    DirectoryNotifyExtendedInformation, // FILE_NOTIFY_EXTENDED_INFORMATION
    DirectoryNotifyFullInformation, // since 22H2
    DirectoryNotifyMaximumInformation
} DIRECTORY_NOTIFY_INFORMATION_CLASS, *PDIRECTORY_NOTIFY_INFORMATION_CLASS;

#endif

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This enumeration is documented in Windows Driver Kit.