All of these functions are exported from ntdll.dll and make system calls into the kernel’s ntoskrnl.exe , where the WNF subsystem resides.

: It provides a more stable interface for developers. The raw

When you call NtQueryWnfStateData , the function transitions from user mode to kernel mode via a syscall instruction. The kernel then:

HMODULE hNtdll = LoadLibraryA("ntdll.dll"); if (!hNtdll) // Handle error

NtQueryWnfStateData is a Windows API function exported by the ntldll.dll library, which is a part of the Windows NT family of operating systems. The function is used to query the state data of a WNF (Windows Notify Facility) state.