ResolveNeighbor

// IPHLPAPI.dll
#include <windows.h>

DWORD ResolveNeighbor(
    SOCKADDR* NetworkAddress,
    void* PhysicalAddress,
    DWORD* PhysicalAddressLength
);

<DllImport("IPHLPAPI.dll", ExactSpelling:=True)>
Public Shared Function ResolveNeighbor(
    NetworkAddress As IntPtr,   ' SOCKADDR*
    PhysicalAddress As IntPtr,   ' void* out
    ByRef PhysicalAddressLength As UInteger   ' DWORD* in/out
) As UInteger
End Function

' NetworkAddress : SOCKADDR*
' PhysicalAddress : void* out
' PhysicalAddressLength : DWORD* in/out
Declare PtrSafe Function ResolveNeighbor Lib "iphlpapi" ( _
    ByVal NetworkAddress As LongPtr, _
    ByVal PhysicalAddress As LongPtr, _
    ByRef PhysicalAddressLength As Long) As Long
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

ResolveNeighbor = ctypes.windll.iphlpapi.ResolveNeighbor
ResolveNeighbor.restype = wintypes.DWORD
ResolveNeighbor.argtypes = [
    ctypes.c_void_p,  # NetworkAddress : SOCKADDR*
    ctypes.POINTER(None),  # PhysicalAddress : void* out
    ctypes.POINTER(wintypes.DWORD),  # PhysicalAddressLength : DWORD* in/out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('IPHLPAPI.dll')
ResolveNeighbor = Fiddle::Function.new(
  lib['ResolveNeighbor'],
  [
    Fiddle::TYPE_VOIDP,  # NetworkAddress : SOCKADDR*
    Fiddle::TYPE_VOIDP,  # PhysicalAddress : void* out
    Fiddle::TYPE_VOIDP,  # PhysicalAddressLength : DWORD* in/out
  ],
  -Fiddle::TYPE_INT)

#[link(name = "iphlpapi")]
extern "system" {
    fn ResolveNeighbor(
        NetworkAddress: *mut SOCKADDR,  // SOCKADDR*
        PhysicalAddress: *mut (),  // void* out
        PhysicalAddressLength: *mut u32  // DWORD* in/out
    ) -> u32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("IPHLPAPI.dll")]
public static extern uint ResolveNeighbor(IntPtr NetworkAddress, IntPtr PhysicalAddress, ref uint PhysicalAddressLength);
"@
$api = Add-Type -MemberDefinition $sig -Name 'IPHLPAPI_ResolveNeighbor' -Namespace Win32 -PassThru
# $api::ResolveNeighbor(NetworkAddress, PhysicalAddress, PhysicalAddressLength)

#uselib "IPHLPAPI.dll"
#func global ResolveNeighbor "ResolveNeighbor" sptr, sptr, sptr
; ResolveNeighbor varptr(NetworkAddress), PhysicalAddress, varptr(PhysicalAddressLength)   ; 戻り値は stat
; NetworkAddress : SOCKADDR* -> "sptr"
; PhysicalAddress : void* out -> "sptr"
; PhysicalAddressLength : DWORD* in/out -> "sptr"
; ※HSP3.7は #func のため戻り値はシステム変数 stat に格納されます。

#uselib "IPHLPAPI.dll"
#cfunc global ResolveNeighbor "ResolveNeighbor" var, sptr, var
; res = ResolveNeighbor(NetworkAddress, PhysicalAddress, PhysicalAddressLength)
; NetworkAddress : SOCKADDR* -> "var"
; PhysicalAddress : void* out -> "sptr"
; PhysicalAddressLength : DWORD* in/out -> "var"
; ※出力/バッファ引数は var 方式(変数を直接渡す)。varptr 方式にも切替可。

; DWORD ResolveNeighbor(SOCKADDR* NetworkAddress, void* PhysicalAddress, DWORD* PhysicalAddressLength)
#uselib "IPHLPAPI.dll"
#cfunc global ResolveNeighbor "ResolveNeighbor" var, intptr, var
; res = ResolveNeighbor(NetworkAddress, PhysicalAddress, PhysicalAddressLength)
; NetworkAddress : SOCKADDR* -> "var"
; PhysicalAddress : void* out -> "intptr"
; PhysicalAddressLength : DWORD* in/out -> "var"
; ※出力/バッファ引数は var 方式(変数を直接渡す)。varptr 方式にも切替可。

import (
	"golang.org/x/sys/windows"
	"unsafe"
)

var (
	iphlpapi = windows.NewLazySystemDLL("IPHLPAPI.dll")
	procResolveNeighbor = iphlpapi.NewProc("ResolveNeighbor")
)

// NetworkAddress (SOCKADDR*), PhysicalAddress (void* out), PhysicalAddressLength (DWORD* in/out)
r1, _, err := procResolveNeighbor.Call(
	uintptr(NetworkAddress),
	uintptr(PhysicalAddress),
	uintptr(PhysicalAddressLength),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // DWORD

function ResolveNeighbor(
  NetworkAddress: Pointer;   // SOCKADDR*
  PhysicalAddress: Pointer;   // void* out
  PhysicalAddressLength: Pointer   // DWORD* in/out
): DWORD; stdcall;
  external 'IPHLPAPI.dll' name 'ResolveNeighbor';

result := DllCall("IPHLPAPI\ResolveNeighbor"
    , "Ptr", NetworkAddress   ; SOCKADDR*
    , "Ptr", PhysicalAddress   ; void* out
    , "Ptr", PhysicalAddressLength   ; DWORD* in/out
    , "UInt")   ; return: DWORD

●ResolveNeighbor(NetworkAddress, PhysicalAddress, PhysicalAddressLength) = DLL("IPHLPAPI.dll", "dword ResolveNeighbor(void*, void*, void*)")
# 呼び出し: ResolveNeighbor(NetworkAddress, PhysicalAddress, PhysicalAddressLength)
# NetworkAddress : SOCKADDR* -> "void*"
# PhysicalAddress : void* out -> "void*"
# PhysicalAddressLength : DWORD* in/out -> "void*"
# なでしこ1は32bit・ANSI(Shift_JIS)。文字列=char*(ANSI)、ポインタ/ハンドル=void*(4byte)。