Ntquerywnfstatedata Ntdlldll Better

NtQueryWnfStateData is an undocumented function within , there is no official Microsoft article for it . However, it is a critical part of the Windows Notification Facility (WNF)

Introduced around Windows 8 and fully utilized in Windows 10 and 11, WNF is a lightweight, in-memory, publish-subscribe state store. Unlike ETW (Event Tracing for Windows) which is logging-oriented, or named pipes which are message-oriented, WNF is designed for between processes and between user mode and kernel mode. ntquerywnfstatedata ntdlldll better

: A pointer to the unique 64-bit WNF identifier indicating what system state you are querying (e.g., audio state, Bluetooth status). NtQueryWnfStateData is an undocumented function within