GetInterfaceInfo

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

DWORD GetInterfaceInfo(
    IP_INTERFACE_INFO* pIfTable,   // optional
    DWORD* dwOutBufLen
);

<DllImport("IPHLPAPI.dll", ExactSpelling:=True)>
Public Shared Function GetInterfaceInfo(
    pIfTable As IntPtr,   ' IP_INTERFACE_INFO* optional, out
    ByRef dwOutBufLen As UInteger   ' DWORD* in/out
) As UInteger
End Function

' pIfTable : IP_INTERFACE_INFO* optional, out
' dwOutBufLen : DWORD* in/out
Declare PtrSafe Function GetInterfaceInfo Lib "iphlpapi" ( _
    ByVal pIfTable As LongPtr, _
    ByRef dwOutBufLen 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

GetInterfaceInfo = ctypes.windll.iphlpapi.GetInterfaceInfo
GetInterfaceInfo.restype = wintypes.DWORD
GetInterfaceInfo.argtypes = [
    ctypes.c_void_p,  # pIfTable : IP_INTERFACE_INFO* optional, out
    ctypes.POINTER(wintypes.DWORD),  # dwOutBufLen : DWORD* in/out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('IPHLPAPI.dll')
GetInterfaceInfo = Fiddle::Function.new(
  lib['GetInterfaceInfo'],
  [
    Fiddle::TYPE_VOIDP,  # pIfTable : IP_INTERFACE_INFO* optional, out
    Fiddle::TYPE_VOIDP,  # dwOutBufLen : DWORD* in/out
  ],
  -Fiddle::TYPE_INT)

#[link(name = "iphlpapi")]
extern "system" {
    fn GetInterfaceInfo(
        pIfTable: *mut IP_INTERFACE_INFO,  // IP_INTERFACE_INFO* optional, out
        dwOutBufLen: *mut u32  // DWORD* in/out
    ) -> u32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("IPHLPAPI.dll")]
public static extern uint GetInterfaceInfo(IntPtr pIfTable, ref uint dwOutBufLen);
"@
$api = Add-Type -MemberDefinition $sig -Name 'IPHLPAPI_GetInterfaceInfo' -Namespace Win32 -PassThru
# $api::GetInterfaceInfo(pIfTable, dwOutBufLen)

#uselib "IPHLPAPI.dll"
#func global GetInterfaceInfo "GetInterfaceInfo" sptr, sptr
; GetInterfaceInfo varptr(pIfTable), varptr(dwOutBufLen)   ; 戻り値は stat
; pIfTable : IP_INTERFACE_INFO* optional, out -> "sptr"
; dwOutBufLen : 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。

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

var (
	iphlpapi = windows.NewLazySystemDLL("IPHLPAPI.dll")
	procGetInterfaceInfo = iphlpapi.NewProc("GetInterfaceInfo")
)

// pIfTable (IP_INTERFACE_INFO* optional, out), dwOutBufLen (DWORD* in/out)
r1, _, err := procGetInterfaceInfo.Call(
	uintptr(pIfTable),
	uintptr(dwOutBufLen),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // DWORD

function GetInterfaceInfo(
  pIfTable: Pointer;   // IP_INTERFACE_INFO* optional, out
  dwOutBufLen: Pointer   // DWORD* in/out
): DWORD; stdcall;
  external 'IPHLPAPI.dll' name 'GetInterfaceInfo';

result := DllCall("IPHLPAPI\GetInterfaceInfo"
    , "Ptr", pIfTable   ; IP_INTERFACE_INFO* optional, out
    , "Ptr", dwOutBufLen   ; DWORD* in/out
    , "UInt")   ; return: DWORD

●GetInterfaceInfo(pIfTable, dwOutBufLen) = DLL("IPHLPAPI.dll", "dword GetInterfaceInfo(void*, void*)")
# 呼び出し: GetInterfaceInfo(pIfTable, dwOutBufLen)
# pIfTable : IP_INTERFACE_INFO* optional, out -> "void*"
# dwOutBufLen : 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)。

const std = @import("std");

extern "iphlpapi" fn GetInterfaceInfo(
    pIfTable: [*c]IP_INTERFACE_INFO, // IP_INTERFACE_INFO* optional, out
    dwOutBufLen: [*c]u32 // DWORD* in/out
) callconv(std.os.windows.WINAPI) u32;

proc GetInterfaceInfo(
    pIfTable: ptr IP_INTERFACE_INFO,  # IP_INTERFACE_INFO* optional, out
    dwOutBufLen: ptr uint32  # DWORD* in/out
): uint32 {.importc: "GetInterfaceInfo", stdcall, dynlib: "IPHLPAPI.dll".}

pragma(lib, "iphlpapi");
extern(Windows)
uint GetInterfaceInfo(
    IP_INTERFACE_INFO* pIfTable,   // IP_INTERFACE_INFO* optional, out
    uint* dwOutBufLen   // DWORD* in/out
);

ccall((:GetInterfaceInfo, "IPHLPAPI.dll"), stdcall, UInt32,
      (Ptr{IP_INTERFACE_INFO}, Ptr{UInt32}),
      pIfTable, dwOutBufLen)
# pIfTable : IP_INTERFACE_INFO* optional, out -> Ptr{IP_INTERFACE_INFO}
# dwOutBufLen : DWORD* in/out -> Ptr{UInt32}
# stdcall は 32bit のみ意味を持つ(x64 では無視)。

local ffi = require("ffi")
ffi.cdef[[
uint32_t GetInterfaceInfo(
    void* pIfTable,
    uint32_t* dwOutBufLen);
]]
local iphlpapi = ffi.load("iphlpapi")
-- iphlpapi.GetInterfaceInfo(pIfTable, dwOutBufLen)
-- pIfTable : IP_INTERFACE_INFO* optional, out
-- dwOutBufLen : DWORD* in/out
-- 構造体/GUIDへのポインタは cdef が通るよう void* で表記(実型は各引数コメント参照)。値渡し構造体・enum は対応する typedef を cdef に追加すること。

const koffi = require('koffi');
const lib = koffi.load('IPHLPAPI.dll');
const GetInterfaceInfo = lib.func('__stdcall', 'GetInterfaceInfo', 'uint32_t', ['void *', 'uint32_t *']);
// GetInterfaceInfo(pIfTable, dwOutBufLen)
// pIfTable : IP_INTERFACE_INFO* optional, out -> 'void *'
// dwOutBufLen : DWORD* in/out -> 'uint32_t *'
// 出力ポインタは koffi.out(...) で包む。構造体は koffi.struct で定義。

const lib = Deno.dlopen("IPHLPAPI.dll", {
  GetInterfaceInfo: { parameters: ["pointer", "pointer"], result: "u32" },
});
// lib.symbols.GetInterfaceInfo(pIfTable, dwOutBufLen)
// pIfTable : IP_INTERFACE_INFO* optional, out -> "pointer"
// dwOutBufLen : DWORD* in/out -> "pointer"
// 文字列引数は "buffer"(NUL 終端のバイト列を Uint8Array で渡す)。
// 値渡し構造体は { struct: [ ...field types... ] } を使用。

<?php
$ffi = FFI::cdef(<<<C
uint32_t GetInterfaceInfo(
    void* pIfTable,
    uint32_t* dwOutBufLen);
C, "IPHLPAPI.dll");
// $ffi->GetInterfaceInfo(pIfTable, dwOutBufLen);
// pIfTable : IP_INTERFACE_INFO* optional, out
// dwOutBufLen : DWORD* in/out
// 構造体/GUIDへのポインタは cdef が通るよう void* で表記(実型は各引数コメント参照)。値渡し構造体・enum は対応する typedef を cdef に追加すること。
// WINAPI(stdcall): x64 では呼出規約が統一されるため問題なし。x86 では __stdcall 対応のラッパが必要な場合あり。

import com.sun.jna.*;
import com.sun.jna.ptr.*;
import com.sun.jna.win32.StdCallLibrary;
import com.sun.jna.win32.W32APIOptions;

public interface Iphlpapi extends StdCallLibrary {
    Iphlpapi INSTANCE = Native.load("iphlpapi", Iphlpapi.class);
    int GetInterfaceInfo(
        Pointer pIfTable,   // IP_INTERFACE_INFO* optional, out
        IntByReference dwOutBufLen   // DWORD* in/out
    );
}

@[Link("iphlpapi")]
lib LibIPHLPAPI
  fun GetInterfaceInfo = GetInterfaceInfo(
    pIfTable : IP_INTERFACE_INFO*,   # IP_INTERFACE_INFO* optional, out
    dwOutBufLen : UInt32*   # DWORD* in/out
  ) : UInt32
end
# 構造体/GUID/enum は lib 内に対応する型定義が必要。
# 呼出規約: x64 は規約統一のため OK。x86(32bit)は WINAPI=stdcall だが Crystal の fun に stdcall 付与構文がなく非対応。

import 'dart:ffi';
import 'package:ffi/ffi.dart';

typedef GetInterfaceInfoNative = Uint32 Function(Pointer<Void>, Pointer<Uint32>);
typedef GetInterfaceInfoDart = int Function(Pointer<Void>, Pointer<Uint32>);
final GetInterfaceInfo = DynamicLibrary.open('IPHLPAPI.dll')
    .lookupFunction<GetInterfaceInfoNative, GetInterfaceInfoDart>('GetInterfaceInfo');
// pIfTable : IP_INTERFACE_INFO* optional, out -> Pointer<Void>
// dwOutBufLen : DWORD* in/out -> Pointer<Uint32>
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。

{$mode objfpc}{$H+}
function GetInterfaceInfo(
  pIfTable: Pointer;   // IP_INTERFACE_INFO* optional, out
  dwOutBufLen: Pointer   // DWORD* in/out
): DWORD; stdcall;
  external 'IPHLPAPI.dll' name 'GetInterfaceInfo';

import Foreign
import Foreign.C.Types
import Foreign.C.String

foreign import stdcall safe "GetInterfaceInfo"
  c_GetInterfaceInfo :: Ptr () -> Ptr Word32 -> IO Word32
-- pIfTable : IP_INTERFACE_INFO* optional, out -> Ptr ()
-- dwOutBufLen : DWORD* in/out -> Ptr Word32
-- 要 GHC(Windows)。stdcall は x64 では ccall として扱われる。ブロックする API は safe 呼び出し推奨。

open Ctypes
open Foreign

let getinterfaceinfo =
  foreign "GetInterfaceInfo"
    ((ptr void) @-> (ptr uint32_t) @-> returning uint32_t)
(* pIfTable : IP_INTERFACE_INFO* optional, out -> (ptr void) *)
(* dwOutBufLen : DWORD* in/out -> (ptr uint32_t) *)
(* foreign は cdecl 前提。x64 Windows では WINAPI と一致。構造体は ctypes structure を定義のこと。 *)

(cffi:define-foreign-library iphlpapi (t "IPHLPAPI.dll"))
(cffi:use-foreign-library iphlpapi)

(cffi:defcfun ("GetInterfaceInfo" get-interface-info :convention :stdcall) :uint32
  (p-if-table :pointer)   ; IP_INTERFACE_INFO* optional, out
  (dw-out-buf-len :pointer))   ; DWORD* in/out
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。

use Win32::API;
my $GetInterfaceInfo = Win32::API::More->new('IPHLPAPI',
    'DWORD GetInterfaceInfo(LPVOID pIfTable, LPVOID dwOutBufLen)');
# my $ret = $GetInterfaceInfo->Call($pIfTable, $dwOutBufLen);
# pIfTable : IP_INTERFACE_INFO* optional, out -> LPVOID
# dwOutBufLen : DWORD* in/out -> LPVOID
# 値渡し構造体は pack() した文字列、または Win32::API::Struct を使用。