Detecting state changes in Windows (e.g., tablet mode, theme changes, focus changes) instantly. How to Use NtQueryWnfStateData
NTSTATUS NtQueryWnfStateData( _In_ PCO_WNF_STATE_NAME StateName, _In_opt_ PWNF_TYPE_ID TypeId, _In_opt_ const VOID* ExplicitScope, _Out_ PWNF_CHANGE_STAMP ChangeStamp, _Out_writes_bytes_to_opt_(*BufferSize, *BufferSize) PVOID Buffer, _Inout_ PULONG BufferSize ); Use code with caution. Why ntdll.dll Access is Faster and "Better" ntquerywnfstatedata ntdlldll better
You won’t find Microsoft documentation for NtQueryWnfStateData . It’s not for you. It’s for: Detecting state changes in Windows (e
Because this function is part of ntdll.dll , it does not have a corresponding header in the standard Windows SDK. You must: and structures manually. It’s not for you
: Specifies the size of Buffer on input, and receives the number of bytes actually written on output (or the required size if the buffer was too small). The maximum valid data size is 4096 bytes; any larger request will fail.