WSAEnumProtocolsA

// WS2_32.dll  (ANSI / -A)
#include <windows.h>

INT WSAEnumProtocolsA(
    INT* lpiProtocols,   // optional
    WSAPROTOCOL_INFOA* lpProtocolBuffer,   // optional
    DWORD* lpdwBufferLength
);

<DllImport("WS2_32.dll", CharSet:=CharSet.Ansi, SetLastError:=True, ExactSpelling:=True)>
Public Shared Function WSAEnumProtocolsA(
    lpiProtocols As IntPtr,   ' INT* optional
    lpProtocolBuffer As IntPtr,   ' WSAPROTOCOL_INFOA* optional, out
    ByRef lpdwBufferLength As UInteger   ' DWORD* in/out
) As Integer
End Function

' lpiProtocols : INT* optional
' lpProtocolBuffer : WSAPROTOCOL_INFOA* optional, out
' lpdwBufferLength : DWORD* in/out
Declare PtrSafe Function WSAEnumProtocolsA Lib "ws2_32" ( _
    ByVal lpiProtocols As LongPtr, _
    ByVal lpProtocolBuffer As LongPtr, _
    ByRef lpdwBufferLength 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

WSAEnumProtocolsA = ctypes.windll.ws2_32.WSAEnumProtocolsA
WSAEnumProtocolsA.restype = ctypes.c_int
WSAEnumProtocolsA.argtypes = [
    ctypes.POINTER(ctypes.c_int),  # lpiProtocols : INT* optional
    ctypes.c_void_p,  # lpProtocolBuffer : WSAPROTOCOL_INFOA* optional, out
    ctypes.POINTER(wintypes.DWORD),  # lpdwBufferLength : DWORD* in/out
]
# GetLastError: use ctypes.GetLastError() (or ctypes.WinDLL(use_last_error=True))

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('WS2_32.dll')
WSAEnumProtocolsA = Fiddle::Function.new(
  lib['WSAEnumProtocolsA'],
  [
    Fiddle::TYPE_VOIDP,  # lpiProtocols : INT* optional
    Fiddle::TYPE_VOIDP,  # lpProtocolBuffer : WSAPROTOCOL_INFOA* optional, out
    Fiddle::TYPE_VOIDP,  # lpdwBufferLength : DWORD* in/out
  ],
  Fiddle::TYPE_INT)

#[link(name = "ws2_32")]
extern "system" {
    fn WSAEnumProtocolsA(
        lpiProtocols: *mut i32,  // INT* optional
        lpProtocolBuffer: *mut WSAPROTOCOL_INFOA,  // WSAPROTOCOL_INFOA* optional, out
        lpdwBufferLength: *mut u32  // DWORD* in/out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("WS2_32.dll", CharSet = CharSet.Ansi, SetLastError = true)]
public static extern int WSAEnumProtocolsA(IntPtr lpiProtocols, IntPtr lpProtocolBuffer, ref uint lpdwBufferLength);
"@
$api = Add-Type -MemberDefinition $sig -Name 'WS2_32_WSAEnumProtocolsA' -Namespace Win32 -PassThru
# $api::WSAEnumProtocolsA(lpiProtocols, lpProtocolBuffer, lpdwBufferLength)

#uselib "WS2_32.dll"
#func global WSAEnumProtocolsA "WSAEnumProtocolsA" sptr, sptr, sptr
; WSAEnumProtocolsA varptr(lpiProtocols), varptr(lpProtocolBuffer), varptr(lpdwBufferLength)   ; 戻り値は stat
; lpiProtocols : INT* optional -> "sptr"
; lpProtocolBuffer : WSAPROTOCOL_INFOA* optional, out -> "sptr"
; lpdwBufferLength : 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 (
	ws2_32 = windows.NewLazySystemDLL("WS2_32.dll")
	procWSAEnumProtocolsA = ws2_32.NewProc("WSAEnumProtocolsA")
)

// lpiProtocols (INT* optional), lpProtocolBuffer (WSAPROTOCOL_INFOA* optional, out), lpdwBufferLength (DWORD* in/out)
r1, _, err := procWSAEnumProtocolsA.Call(
	uintptr(lpiProtocols),
	uintptr(lpProtocolBuffer),
	uintptr(lpdwBufferLength),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // INT

function WSAEnumProtocolsA(
  lpiProtocols: Pointer;   // INT* optional
  lpProtocolBuffer: Pointer;   // WSAPROTOCOL_INFOA* optional, out
  lpdwBufferLength: Pointer   // DWORD* in/out
): Integer; stdcall;
  external 'WS2_32.dll' name 'WSAEnumProtocolsA';

result := DllCall("WS2_32\WSAEnumProtocolsA"
    , "Ptr", lpiProtocols   ; INT* optional
    , "Ptr", lpProtocolBuffer   ; WSAPROTOCOL_INFOA* optional, out
    , "Ptr", lpdwBufferLength   ; DWORD* in/out
    , "Int")   ; return: INT

●WSAEnumProtocolsA(lpiProtocols, lpProtocolBuffer, lpdwBufferLength) = DLL("WS2_32.dll", "int WSAEnumProtocolsA(void*, void*, void*)")
# 呼び出し: WSAEnumProtocolsA(lpiProtocols, lpProtocolBuffer, lpdwBufferLength)
# lpiProtocols : INT* optional -> "void*"
# lpProtocolBuffer : WSAPROTOCOL_INFOA* optional, out -> "void*"
# lpdwBufferLength : 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 "ws2_32" fn WSAEnumProtocolsA(
    lpiProtocols: [*c]i32, // INT* optional
    lpProtocolBuffer: [*c]WSAPROTOCOL_INFOA, // WSAPROTOCOL_INFOA* optional, out
    lpdwBufferLength: [*c]u32 // DWORD* in/out
) callconv(std.os.windows.WINAPI) i32;

proc WSAEnumProtocolsA(
    lpiProtocols: ptr int32,  # INT* optional
    lpProtocolBuffer: ptr WSAPROTOCOL_INFOA,  # WSAPROTOCOL_INFOA* optional, out
    lpdwBufferLength: ptr uint32  # DWORD* in/out
): int32 {.importc: "WSAEnumProtocolsA", stdcall, dynlib: "WS2_32.dll".}

pragma(lib, "ws2_32");
extern(Windows)
int WSAEnumProtocolsA(
    int* lpiProtocols,   // INT* optional
    WSAPROTOCOL_INFOA* lpProtocolBuffer,   // WSAPROTOCOL_INFOA* optional, out
    uint* lpdwBufferLength   // DWORD* in/out
);

ccall((:WSAEnumProtocolsA, "WS2_32.dll"), stdcall, Int32,
      (Ptr{Int32}, Ptr{WSAPROTOCOL_INFOA}, Ptr{UInt32}),
      lpiProtocols, lpProtocolBuffer, lpdwBufferLength)
# lpiProtocols : INT* optional -> Ptr{Int32}
# lpProtocolBuffer : WSAPROTOCOL_INFOA* optional, out -> Ptr{WSAPROTOCOL_INFOA}
# lpdwBufferLength : 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[[
int32_t WSAEnumProtocolsA(
    int32_t* lpiProtocols,
    void* lpProtocolBuffer,
    uint32_t* lpdwBufferLength);
]]
local ws2_32 = ffi.load("ws2_32")
-- ws2_32.WSAEnumProtocolsA(lpiProtocols, lpProtocolBuffer, lpdwBufferLength)
-- lpiProtocols : INT* optional
-- lpProtocolBuffer : WSAPROTOCOL_INFOA* optional, out
-- lpdwBufferLength : 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('WS2_32.dll');
const WSAEnumProtocolsA = lib.func('__stdcall', 'WSAEnumProtocolsA', 'int32_t', ['int32_t *', 'void *', 'uint32_t *']);
// WSAEnumProtocolsA(lpiProtocols, lpProtocolBuffer, lpdwBufferLength)
// lpiProtocols : INT* optional -> 'int32_t *'
// lpProtocolBuffer : WSAPROTOCOL_INFOA* optional, out -> 'void *'
// lpdwBufferLength : 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("WS2_32.dll", {
  WSAEnumProtocolsA: { parameters: ["pointer", "pointer", "pointer"], result: "i32" },
});
// lib.symbols.WSAEnumProtocolsA(lpiProtocols, lpProtocolBuffer, lpdwBufferLength)
// lpiProtocols : INT* optional -> "pointer"
// lpProtocolBuffer : WSAPROTOCOL_INFOA* optional, out -> "pointer"
// lpdwBufferLength : DWORD* in/out -> "pointer"
// 文字列は "buffer"。ANSI(-A) は new TextEncoder() で UTF-8/ANSI バイト列(末尾に \x00)を渡す。
// 値渡し構造体は { struct: [ ...field types... ] } を使用。

<?php
$ffi = FFI::cdef(<<<C
int32_t WSAEnumProtocolsA(
    int32_t* lpiProtocols,
    void* lpProtocolBuffer,
    uint32_t* lpdwBufferLength);
C, "WS2_32.dll");
// $ffi->WSAEnumProtocolsA(lpiProtocols, lpProtocolBuffer, lpdwBufferLength);
// lpiProtocols : INT* optional
// lpProtocolBuffer : WSAPROTOCOL_INFOA* optional, out
// lpdwBufferLength : 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 Ws2_32 extends StdCallLibrary {
    Ws2_32 INSTANCE = Native.load("ws2_32", Ws2_32.class, W32APIOptions.ASCII_OPTIONS);
    int WSAEnumProtocolsA(
        IntByReference lpiProtocols,   // INT* optional
        Pointer lpProtocolBuffer,   // WSAPROTOCOL_INFOA* optional, out
        IntByReference lpdwBufferLength   // DWORD* in/out
    );
}

@[Link("ws2_32")]
lib LibWS2_32
  fun WSAEnumProtocolsA = WSAEnumProtocolsA(
    lpiProtocols : Int32*,   # INT* optional
    lpProtocolBuffer : WSAPROTOCOL_INFOA*,   # WSAPROTOCOL_INFOA* optional, out
    lpdwBufferLength : UInt32*   # DWORD* in/out
  ) : Int32
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 WSAEnumProtocolsANative = Int32 Function(Pointer<Int32>, Pointer<Void>, Pointer<Uint32>);
typedef WSAEnumProtocolsADart = int Function(Pointer<Int32>, Pointer<Void>, Pointer<Uint32>);
final WSAEnumProtocolsA = DynamicLibrary.open('WS2_32.dll')
    .lookupFunction<WSAEnumProtocolsANative, WSAEnumProtocolsADart>('WSAEnumProtocolsA');
// lpiProtocols : INT* optional -> Pointer<Int32>
// lpProtocolBuffer : WSAPROTOCOL_INFOA* optional, out -> Pointer<Void>
// lpdwBufferLength : DWORD* in/out -> Pointer<Uint32>
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。

{$mode objfpc}{$H+}
function WSAEnumProtocolsA(
  lpiProtocols: Pointer;   // INT* optional
  lpProtocolBuffer: Pointer;   // WSAPROTOCOL_INFOA* optional, out
  lpdwBufferLength: Pointer   // DWORD* in/out
): Integer; stdcall;
  external 'WS2_32.dll' name 'WSAEnumProtocolsA';

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

foreign import stdcall safe "WSAEnumProtocolsA"
  c_WSAEnumProtocolsA :: Ptr Int32 -> Ptr () -> Ptr Word32 -> IO Int32
-- lpiProtocols : INT* optional -> Ptr Int32
-- lpProtocolBuffer : WSAPROTOCOL_INFOA* optional, out -> Ptr ()
-- lpdwBufferLength : 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 wsaenumprotocolsa =
  foreign "WSAEnumProtocolsA"
    ((ptr int32_t) @-> (ptr void) @-> (ptr uint32_t) @-> returning int32_t)
(* lpiProtocols : INT* optional -> (ptr int32_t) *)
(* lpProtocolBuffer : WSAPROTOCOL_INFOA* optional, out -> (ptr void) *)
(* lpdwBufferLength : 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 ws2_32 (t "WS2_32.dll"))
(cffi:use-foreign-library ws2_32)

(cffi:defcfun ("WSAEnumProtocolsA" wsaenum-protocols-a :convention :stdcall) :int32
  (lpi-protocols :pointer)   ; INT* optional
  (lp-protocol-buffer :pointer)   ; WSAPROTOCOL_INFOA* optional, out
  (lpdw-buffer-length :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 $WSAEnumProtocolsA = Win32::API::More->new('WS2_32',
    'int WSAEnumProtocolsA(LPVOID lpiProtocols, LPVOID lpProtocolBuffer, LPVOID lpdwBufferLength)');
# my $ret = $WSAEnumProtocolsA->Call($lpiProtocols, $lpProtocolBuffer, $lpdwBufferLength);
# lpiProtocols : INT* optional -> LPVOID
# lpProtocolBuffer : WSAPROTOCOL_INFOA* optional, out -> LPVOID
# lpdwBufferLength : 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。