WSAEnumNameSpaceProvidersA

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

INT WSAEnumNameSpaceProvidersA(
    DWORD* lpdwBufferLength,
    WSANAMESPACE_INFOA* lpnspBuffer
);

<DllImport("WS2_32.dll", CharSet:=CharSet.Ansi, SetLastError:=True, ExactSpelling:=True)>
Public Shared Function WSAEnumNameSpaceProvidersA(
    ByRef lpdwBufferLength As UInteger,   ' DWORD* in/out
    lpnspBuffer As IntPtr   ' WSANAMESPACE_INFOA* out
) As Integer
End Function

' lpdwBufferLength : DWORD* in/out
' lpnspBuffer : WSANAMESPACE_INFOA* out
Declare PtrSafe Function WSAEnumNameSpaceProvidersA Lib "ws2_32" ( _
    ByRef lpdwBufferLength As Long, _
    ByVal lpnspBuffer As LongPtr) As Long
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

WSAEnumNameSpaceProvidersA = ctypes.windll.ws2_32.WSAEnumNameSpaceProvidersA
WSAEnumNameSpaceProvidersA.restype = ctypes.c_int
WSAEnumNameSpaceProvidersA.argtypes = [
    ctypes.POINTER(wintypes.DWORD),  # lpdwBufferLength : DWORD* in/out
    ctypes.c_void_p,  # lpnspBuffer : WSANAMESPACE_INFOA* out
]
# GetLastError: use ctypes.GetLastError() (or ctypes.WinDLL(use_last_error=True))

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('WS2_32.dll')
WSAEnumNameSpaceProvidersA = Fiddle::Function.new(
  lib['WSAEnumNameSpaceProvidersA'],
  [
    Fiddle::TYPE_VOIDP,  # lpdwBufferLength : DWORD* in/out
    Fiddle::TYPE_VOIDP,  # lpnspBuffer : WSANAMESPACE_INFOA* out
  ],
  Fiddle::TYPE_INT)

#[link(name = "ws2_32")]
extern "system" {
    fn WSAEnumNameSpaceProvidersA(
        lpdwBufferLength: *mut u32,  // DWORD* in/out
        lpnspBuffer: *mut WSANAMESPACE_INFOA  // WSANAMESPACE_INFOA* 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 WSAEnumNameSpaceProvidersA(ref uint lpdwBufferLength, IntPtr lpnspBuffer);
"@
$api = Add-Type -MemberDefinition $sig -Name 'WS2_32_WSAEnumNameSpaceProvidersA' -Namespace Win32 -PassThru
# $api::WSAEnumNameSpaceProvidersA(lpdwBufferLength, lpnspBuffer)

#uselib "WS2_32.dll"
#func global WSAEnumNameSpaceProvidersA "WSAEnumNameSpaceProvidersA" sptr, sptr
; WSAEnumNameSpaceProvidersA varptr(lpdwBufferLength), varptr(lpnspBuffer)   ; 戻り値は stat
; lpdwBufferLength : DWORD* in/out -> "sptr"
; lpnspBuffer : WSANAMESPACE_INFOA* 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")
	procWSAEnumNameSpaceProvidersA = ws2_32.NewProc("WSAEnumNameSpaceProvidersA")
)

// lpdwBufferLength (DWORD* in/out), lpnspBuffer (WSANAMESPACE_INFOA* out)
r1, _, err := procWSAEnumNameSpaceProvidersA.Call(
	uintptr(lpdwBufferLength),
	uintptr(lpnspBuffer),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // INT

function WSAEnumNameSpaceProvidersA(
  lpdwBufferLength: Pointer;   // DWORD* in/out
  lpnspBuffer: Pointer   // WSANAMESPACE_INFOA* out
): Integer; stdcall;
  external 'WS2_32.dll' name 'WSAEnumNameSpaceProvidersA';

result := DllCall("WS2_32\WSAEnumNameSpaceProvidersA"
    , "Ptr", lpdwBufferLength   ; DWORD* in/out
    , "Ptr", lpnspBuffer   ; WSANAMESPACE_INFOA* out
    , "Int")   ; return: INT

●WSAEnumNameSpaceProvidersA(lpdwBufferLength, lpnspBuffer) = DLL("WS2_32.dll", "int WSAEnumNameSpaceProvidersA(void*, void*)")
# 呼び出し: WSAEnumNameSpaceProvidersA(lpdwBufferLength, lpnspBuffer)
# lpdwBufferLength : DWORD* in/out -> "void*"
# lpnspBuffer : WSANAMESPACE_INFOA* 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 WSAEnumNameSpaceProvidersA(
    lpdwBufferLength: [*c]u32, // DWORD* in/out
    lpnspBuffer: [*c]WSANAMESPACE_INFOA // WSANAMESPACE_INFOA* out
) callconv(std.os.windows.WINAPI) i32;

proc WSAEnumNameSpaceProvidersA(
    lpdwBufferLength: ptr uint32,  # DWORD* in/out
    lpnspBuffer: ptr WSANAMESPACE_INFOA  # WSANAMESPACE_INFOA* out
): int32 {.importc: "WSAEnumNameSpaceProvidersA", stdcall, dynlib: "WS2_32.dll".}

pragma(lib, "ws2_32");
extern(Windows)
int WSAEnumNameSpaceProvidersA(
    uint* lpdwBufferLength,   // DWORD* in/out
    WSANAMESPACE_INFOA* lpnspBuffer   // WSANAMESPACE_INFOA* out
);

ccall((:WSAEnumNameSpaceProvidersA, "WS2_32.dll"), stdcall, Int32,
      (Ptr{UInt32}, Ptr{WSANAMESPACE_INFOA}),
      lpdwBufferLength, lpnspBuffer)
# lpdwBufferLength : DWORD* in/out -> Ptr{UInt32}
# lpnspBuffer : WSANAMESPACE_INFOA* out -> Ptr{WSANAMESPACE_INFOA}
# stdcall は 32bit のみ意味を持つ(x64 では無視)。

local ffi = require("ffi")
ffi.cdef[[
int32_t WSAEnumNameSpaceProvidersA(
    uint32_t* lpdwBufferLength,
    void* lpnspBuffer);
]]
local ws2_32 = ffi.load("ws2_32")
-- ws2_32.WSAEnumNameSpaceProvidersA(lpdwBufferLength, lpnspBuffer)
-- lpdwBufferLength : DWORD* in/out
-- lpnspBuffer : WSANAMESPACE_INFOA* 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 WSAEnumNameSpaceProvidersA = lib.func('__stdcall', 'WSAEnumNameSpaceProvidersA', 'int32_t', ['uint32_t *', 'void *']);
// WSAEnumNameSpaceProvidersA(lpdwBufferLength, lpnspBuffer)
// lpdwBufferLength : DWORD* in/out -> 'uint32_t *'
// lpnspBuffer : WSANAMESPACE_INFOA* out -> 'void *'
// 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", {
  WSAEnumNameSpaceProvidersA: { parameters: ["pointer", "pointer"], result: "i32" },
});
// lib.symbols.WSAEnumNameSpaceProvidersA(lpdwBufferLength, lpnspBuffer)
// lpdwBufferLength : DWORD* in/out -> "pointer"
// lpnspBuffer : WSANAMESPACE_INFOA* 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 WSAEnumNameSpaceProvidersA(
    uint32_t* lpdwBufferLength,
    void* lpnspBuffer);
C, "WS2_32.dll");
// $ffi->WSAEnumNameSpaceProvidersA(lpdwBufferLength, lpnspBuffer);
// lpdwBufferLength : DWORD* in/out
// lpnspBuffer : WSANAMESPACE_INFOA* 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 WSAEnumNameSpaceProvidersA(
        IntByReference lpdwBufferLength,   // DWORD* in/out
        Pointer lpnspBuffer   // WSANAMESPACE_INFOA* out
    );
}

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

{$mode objfpc}{$H+}
function WSAEnumNameSpaceProvidersA(
  lpdwBufferLength: Pointer;   // DWORD* in/out
  lpnspBuffer: Pointer   // WSANAMESPACE_INFOA* out
): Integer; stdcall;
  external 'WS2_32.dll' name 'WSAEnumNameSpaceProvidersA';

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

foreign import stdcall safe "WSAEnumNameSpaceProvidersA"
  c_WSAEnumNameSpaceProvidersA :: Ptr Word32 -> Ptr () -> IO Int32
-- lpdwBufferLength : DWORD* in/out -> Ptr Word32
-- lpnspBuffer : WSANAMESPACE_INFOA* out -> Ptr ()
-- 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 wsaenumnamespaceprovidersa =
  foreign "WSAEnumNameSpaceProvidersA"
    ((ptr uint32_t) @-> (ptr void) @-> returning int32_t)
(* lpdwBufferLength : DWORD* in/out -> (ptr uint32_t) *)
(* lpnspBuffer : WSANAMESPACE_INFOA* out -> (ptr void) *)
(* 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 ("WSAEnumNameSpaceProvidersA" wsaenum-name-space-providers-a :convention :stdcall) :int32
  (lpdw-buffer-length :pointer)   ; DWORD* in/out
  (lpnsp-buffer :pointer))   ; WSANAMESPACE_INFOA* out
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。

use Win32::API;
my $WSAEnumNameSpaceProvidersA = Win32::API::More->new('WS2_32',
    'int WSAEnumNameSpaceProvidersA(LPVOID lpdwBufferLength, LPVOID lpnspBuffer)');
# my $ret = $WSAEnumNameSpaceProvidersA->Call($lpdwBufferLength, $lpnspBuffer);
# lpdwBufferLength : DWORD* in/out -> LPVOID
# lpnspBuffer : WSANAMESPACE_INFOA* out -> LPVOID
# 値渡し構造体は pack() した文字列、または Win32::API::Struct を使用。