WSAAccept

// WS2_32.dll
#include <windows.h>

SOCKET WSAAccept(
    SOCKET s,
    SOCKADDR* addr,   // optional
    INT* addrlen,   // optional
    LPCONDITIONPROC lpfnCondition,   // optional
    UINT_PTR dwCallbackData   // optional
);

<DllImport("WS2_32.dll", SetLastError:=True, ExactSpelling:=True)>
Public Shared Function WSAAccept(
    s As UIntPtr,   ' SOCKET
    addr As IntPtr,   ' SOCKADDR* optional, out
    addrlen As IntPtr,   ' INT* optional, in/out
    lpfnCondition As IntPtr,   ' LPCONDITIONPROC optional
    dwCallbackData As UIntPtr   ' UINT_PTR optional
) As UIntPtr
End Function

' s : SOCKET
' addr : SOCKADDR* optional, out
' addrlen : INT* optional, in/out
' lpfnCondition : LPCONDITIONPROC optional
' dwCallbackData : UINT_PTR optional
Declare PtrSafe Function WSAAccept Lib "ws2_32" ( _
    ByVal s As LongPtr, _
    ByVal addr As LongPtr, _
    ByVal addrlen As LongPtr, _
    ByVal lpfnCondition As LongPtr, _
    ByVal dwCallbackData As LongPtr) As LongPtr
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

WSAAccept = ctypes.windll.ws2_32.WSAAccept
WSAAccept.restype = ctypes.c_size_t
WSAAccept.argtypes = [
    ctypes.c_size_t,  # s : SOCKET
    ctypes.c_void_p,  # addr : SOCKADDR* optional, out
    ctypes.POINTER(ctypes.c_int),  # addrlen : INT* optional, in/out
    ctypes.c_void_p,  # lpfnCondition : LPCONDITIONPROC optional
    ctypes.c_size_t,  # dwCallbackData : UINT_PTR optional
]
# GetLastError: use ctypes.GetLastError() (or ctypes.WinDLL(use_last_error=True))

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('WS2_32.dll')
WSAAccept = Fiddle::Function.new(
  lib['WSAAccept'],
  [
    Fiddle::TYPE_UINTPTR_T,  # s : SOCKET
    Fiddle::TYPE_VOIDP,  # addr : SOCKADDR* optional, out
    Fiddle::TYPE_VOIDP,  # addrlen : INT* optional, in/out
    Fiddle::TYPE_VOIDP,  # lpfnCondition : LPCONDITIONPROC optional
    Fiddle::TYPE_UINTPTR_T,  # dwCallbackData : UINT_PTR optional
  ],
  Fiddle::TYPE_UINTPTR_T)

#[link(name = "ws2_32")]
extern "system" {
    fn WSAAccept(
        s: usize,  // SOCKET
        addr: *mut SOCKADDR,  // SOCKADDR* optional, out
        addrlen: *mut i32,  // INT* optional, in/out
        lpfnCondition: *const core::ffi::c_void,  // LPCONDITIONPROC optional
        dwCallbackData: usize  // UINT_PTR optional
    ) -> usize;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("WS2_32.dll", SetLastError = true)]
public static extern UIntPtr WSAAccept(UIntPtr s, IntPtr addr, IntPtr addrlen, IntPtr lpfnCondition, UIntPtr dwCallbackData);
"@
$api = Add-Type -MemberDefinition $sig -Name 'WS2_32_WSAAccept' -Namespace Win32 -PassThru
# $api::WSAAccept(s, addr, addrlen, lpfnCondition, dwCallbackData)

#uselib "WS2_32.dll"
#func global WSAAccept "WSAAccept" sptr, sptr, sptr, sptr, sptr
; WSAAccept s, varptr(addr), varptr(addrlen), lpfnCondition, dwCallbackData   ; 戻り値は stat
; s : SOCKET -> "sptr"
; addr : SOCKADDR* optional, out -> "sptr"
; addrlen : INT* optional, in/out -> "sptr"
; lpfnCondition : LPCONDITIONPROC optional -> "sptr"
; dwCallbackData : UINT_PTR optional -> "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")
	procWSAAccept = ws2_32.NewProc("WSAAccept")
)

// s (SOCKET), addr (SOCKADDR* optional, out), addrlen (INT* optional, in/out), lpfnCondition (LPCONDITIONPROC optional), dwCallbackData (UINT_PTR optional)
r1, _, err := procWSAAccept.Call(
	uintptr(s),
	uintptr(addr),
	uintptr(addrlen),
	uintptr(lpfnCondition),
	uintptr(dwCallbackData),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // SOCKET

function WSAAccept(
  s: NativeUInt;   // SOCKET
  addr: Pointer;   // SOCKADDR* optional, out
  addrlen: Pointer;   // INT* optional, in/out
  lpfnCondition: Pointer;   // LPCONDITIONPROC optional
  dwCallbackData: NativeUInt   // UINT_PTR optional
): NativeUInt; stdcall;
  external 'WS2_32.dll' name 'WSAAccept';

result := DllCall("WS2_32\WSAAccept"
    , "UPtr", s   ; SOCKET
    , "Ptr", addr   ; SOCKADDR* optional, out
    , "Ptr", addrlen   ; INT* optional, in/out
    , "Ptr", lpfnCondition   ; LPCONDITIONPROC optional
    , "UPtr", dwCallbackData   ; UINT_PTR optional
    , "UPtr")   ; return: SOCKET

●WSAAccept(s, addr, addrlen, lpfnCondition, dwCallbackData) = DLL("WS2_32.dll", "int WSAAccept(int, void*, void*, void*, int)")
# 呼び出し: WSAAccept(s, addr, addrlen, lpfnCondition, dwCallbackData)
# s : SOCKET -> "int"
# addr : SOCKADDR* optional, out -> "void*"
# addrlen : INT* optional, in/out -> "void*"
# lpfnCondition : LPCONDITIONPROC optional -> "void*"
# dwCallbackData : UINT_PTR optional -> "int"
# 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 WSAAccept(
    s: usize, // SOCKET
    addr: [*c]SOCKADDR, // SOCKADDR* optional, out
    addrlen: [*c]i32, // INT* optional, in/out
    lpfnCondition: ?*anyopaque, // LPCONDITIONPROC optional
    dwCallbackData: usize // UINT_PTR optional
) callconv(std.os.windows.WINAPI) usize;

proc WSAAccept(
    s: uint,  # SOCKET
    `addr`: ptr SOCKADDR,  # SOCKADDR* optional, out
    addrlen: ptr int32,  # INT* optional, in/out
    lpfnCondition: pointer,  # LPCONDITIONPROC optional
    dwCallbackData: uint  # UINT_PTR optional
): uint {.importc: "WSAAccept", stdcall, dynlib: "WS2_32.dll".}

pragma(lib, "ws2_32");
extern(Windows)
size_t WSAAccept(
    size_t s,   // SOCKET
    SOCKADDR* addr,   // SOCKADDR* optional, out
    int* addrlen,   // INT* optional, in/out
    void* lpfnCondition,   // LPCONDITIONPROC optional
    size_t dwCallbackData   // UINT_PTR optional
);

ccall((:WSAAccept, "WS2_32.dll"), stdcall, Csize_t,
      (Csize_t, Ptr{SOCKADDR}, Ptr{Int32}, Ptr{Cvoid}, Csize_t),
      s, addr, addrlen, lpfnCondition, dwCallbackData)
# s : SOCKET -> Csize_t
# addr : SOCKADDR* optional, out -> Ptr{SOCKADDR}
# addrlen : INT* optional, in/out -> Ptr{Int32}
# lpfnCondition : LPCONDITIONPROC optional -> Ptr{Cvoid}
# dwCallbackData : UINT_PTR optional -> Csize_t
# stdcall は 32bit のみ意味を持つ(x64 では無視)。

local ffi = require("ffi")
ffi.cdef[[
uintptr_t WSAAccept(
    uintptr_t s,
    void* addr,
    int32_t* addrlen,
    void* lpfnCondition,
    uintptr_t dwCallbackData);
]]
local ws2_32 = ffi.load("ws2_32")
-- ws2_32.WSAAccept(s, addr, addrlen, lpfnCondition, dwCallbackData)
-- s : SOCKET
-- addr : SOCKADDR* optional, out
-- addrlen : INT* optional, in/out
-- lpfnCondition : LPCONDITIONPROC optional
-- dwCallbackData : UINT_PTR optional
-- 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 WSAAccept = lib.func('__stdcall', 'WSAAccept', 'uintptr_t', ['uintptr_t', 'void *', 'int32_t *', 'void *', 'uintptr_t']);
// WSAAccept(s, addr, addrlen, lpfnCondition, dwCallbackData)
// s : SOCKET -> 'uintptr_t'
// addr : SOCKADDR* optional, out -> 'void *'
// addrlen : INT* optional, in/out -> 'int32_t *'
// lpfnCondition : LPCONDITIONPROC optional -> 'void *'
// dwCallbackData : UINT_PTR optional -> 'uintptr_t'
// 出力ポインタは koffi.out(...) で包む。構造体は koffi.struct で定義。
// コールバック(関数ポインタ)は koffi.proto/koffi.register で型を定義して渡す(素の void* では JS 関数を渡せない)。

const lib = Deno.dlopen("WS2_32.dll", {
  WSAAccept: { parameters: ["usize", "pointer", "pointer", "pointer", "usize"], result: "usize" },
});
// lib.symbols.WSAAccept(s, addr, addrlen, lpfnCondition, dwCallbackData)
// s : SOCKET -> "usize"
// addr : SOCKADDR* optional, out -> "pointer"
// addrlen : INT* optional, in/out -> "pointer"
// lpfnCondition : LPCONDITIONPROC optional -> "pointer"
// dwCallbackData : UINT_PTR optional -> "usize"
// 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
size_t WSAAccept(
    size_t s,
    void* addr,
    int32_t* addrlen,
    void* lpfnCondition,
    size_t dwCallbackData);
C, "WS2_32.dll");
// $ffi->WSAAccept(s, addr, addrlen, lpfnCondition, dwCallbackData);
// s : SOCKET
// addr : SOCKADDR* optional, out
// addrlen : INT* optional, in/out
// lpfnCondition : LPCONDITIONPROC optional
// dwCallbackData : UINT_PTR optional
// 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);
    long WSAAccept(
        long s,   // SOCKET
        Pointer addr,   // SOCKADDR* optional, out
        IntByReference addrlen,   // INT* optional, in/out
        Callback lpfnCondition,   // LPCONDITIONPROC optional
        long dwCallbackData   // UINT_PTR optional
    );
}

@[Link("ws2_32")]
lib LibWS2_32
  fun WSAAccept = WSAAccept(
    s : LibC::SizeT,   # SOCKET
    addr : SOCKADDR*,   # SOCKADDR* optional, out
    addrlen : Int32*,   # INT* optional, in/out
    lpfnCondition : Void*,   # LPCONDITIONPROC optional
    dwCallbackData : LibC::SizeT   # UINT_PTR optional
  ) : LibC::SizeT
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 WSAAcceptNative = UintPtr Function(UintPtr, Pointer<Void>, Pointer<Int32>, Pointer<Void>, UintPtr);
typedef WSAAcceptDart = int Function(int, Pointer<Void>, Pointer<Int32>, Pointer<Void>, int);
final WSAAccept = DynamicLibrary.open('WS2_32.dll')
    .lookupFunction<WSAAcceptNative, WSAAcceptDart>('WSAAccept');
// s : SOCKET -> UintPtr
// addr : SOCKADDR* optional, out -> Pointer<Void>
// addrlen : INT* optional, in/out -> Pointer<Int32>
// lpfnCondition : LPCONDITIONPROC optional -> Pointer<Void>
// dwCallbackData : UINT_PTR optional -> UintPtr
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。

{$mode objfpc}{$H+}
function WSAAccept(
  s: NativeUInt;   // SOCKET
  addr: Pointer;   // SOCKADDR* optional, out
  addrlen: Pointer;   // INT* optional, in/out
  lpfnCondition: Pointer;   // LPCONDITIONPROC optional
  dwCallbackData: NativeUInt   // UINT_PTR optional
): NativeUInt; stdcall;
  external 'WS2_32.dll' name 'WSAAccept';

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

foreign import stdcall safe "WSAAccept"
  c_WSAAccept :: CUIntPtr -> Ptr () -> Ptr Int32 -> Ptr () -> CUIntPtr -> IO CUIntPtr
-- s : SOCKET -> CUIntPtr
-- addr : SOCKADDR* optional, out -> Ptr ()
-- addrlen : INT* optional, in/out -> Ptr Int32
-- lpfnCondition : LPCONDITIONPROC optional -> Ptr ()
-- dwCallbackData : UINT_PTR optional -> CUIntPtr
-- 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 wsaaccept =
  foreign "WSAAccept"
    (size_t @-> (ptr void) @-> (ptr int32_t) @-> (ptr void) @-> size_t @-> returning size_t)
(* s : SOCKET -> size_t *)
(* addr : SOCKADDR* optional, out -> (ptr void) *)
(* addrlen : INT* optional, in/out -> (ptr int32_t) *)
(* lpfnCondition : LPCONDITIONPROC optional -> (ptr void) *)
(* dwCallbackData : UINT_PTR optional -> size_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 ("WSAAccept" wsaaccept :convention :stdcall) :uint64
  (s :uint64)   ; SOCKET
  (addr :pointer)   ; SOCKADDR* optional, out
  (addrlen :pointer)   ; INT* optional, in/out
  (lpfn-condition :pointer)   ; LPCONDITIONPROC optional
  (dw-callback-data :uint64))   ; UINT_PTR optional
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。

use Win32::API;
my $WSAAccept = Win32::API::More->new('WS2_32',
    'WPARAM WSAAccept(WPARAM s, LPVOID addr, LPVOID addrlen, LPVOID lpfnCondition, WPARAM dwCallbackData)');
# my $ret = $WSAAccept->Call($s, $addr, $addrlen, $lpfnCondition, $dwCallbackData);
# s : SOCKET -> WPARAM
# addr : SOCKADDR* optional, out -> LPVOID
# addrlen : INT* optional, in/out -> LPVOID
# lpfnCondition : LPCONDITIONPROC optional -> LPVOID
# dwCallbackData : UINT_PTR optional -> WPARAM
# 値渡し構造体は pack() した文字列、または Win32::API::Struct を使用。
# コールバック(関数ポインタ)は Perl sub を直接渡せません。Win32::API::Callback を使用してください。