: You must manually define the function prototype and use GetModuleHandle and GetProcAddress to link to it, as it isn't in the standard headers. Sample Implementation Pattern
Developers and security researchers use NtQueryWnfStateData to: ntquerywnfstatedata ntdlldll better
NtQueryWnfStateData is exported by name from ntdll.dll . Its prototype is not officially documented by Microsoft, but through reverse engineering (e.g., from ReactOS or public headers), we know it resembles: : You must manually define the function prototype
Imagine you want to know if a state changed without reading the entire data blob. With NtQueryWnfStateData , you can pass NULL as the output buffer and just retrieve the ChangeStamp . This is significantly for frequent checks—you only copy data when a real change occurs. With NtQueryWnfStateData , you can pass NULL as
NTSYSAPI NTSTATUS NTAPI RtlQueryWnfStateData( _In_ PWNF_STATE_NAME StateName, _In_opt_ PWNF_TYPE_ID TypeId, _In_opt_
: Always initialize the BufferSize pointer correctly. If the provided buffer is too small, the function will return STATUS_BUFFER_TOO_SMALL , but an uninitialized pointer will cause an immediate crash.