CreateMailslotA

// KERNEL32.dll  (ANSI / -A)
#include <windows.h>

HANDLE CreateMailslotA(
    LPCSTR lpName,
    DWORD nMaxMessageSize,
    DWORD lReadTimeout,
    SECURITY_ATTRIBUTES* lpSecurityAttributes   // optional
);

<DllImport("KERNEL32.dll", CharSet:=CharSet.Ansi, SetLastError:=True, ExactSpelling:=True)>
Public Shared Function CreateMailslotA(
    <MarshalAs(UnmanagedType.LPStr)> lpName As String,   ' LPCSTR
    nMaxMessageSize As UInteger,   ' DWORD
    lReadTimeout As UInteger,   ' DWORD
    lpSecurityAttributes As IntPtr   ' SECURITY_ATTRIBUTES* optional
) As IntPtr
End Function

' lpName : LPCSTR
' nMaxMessageSize : DWORD
' lReadTimeout : DWORD
' lpSecurityAttributes : SECURITY_ATTRIBUTES* optional
Declare PtrSafe Function CreateMailslotA Lib "kernel32" ( _
    ByVal lpName As String, _
    ByVal nMaxMessageSize As Long, _
    ByVal lReadTimeout As Long, _
    ByVal lpSecurityAttributes 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

CreateMailslotA = ctypes.windll.kernel32.CreateMailslotA
CreateMailslotA.restype = ctypes.c_void_p
CreateMailslotA.argtypes = [
    wintypes.LPCSTR,  # lpName : LPCSTR
    wintypes.DWORD,  # nMaxMessageSize : DWORD
    wintypes.DWORD,  # lReadTimeout : DWORD
    ctypes.c_void_p,  # lpSecurityAttributes : SECURITY_ATTRIBUTES* optional
]
# GetLastError: use ctypes.GetLastError() (or ctypes.WinDLL(use_last_error=True))

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('KERNEL32.dll')
CreateMailslotA = Fiddle::Function.new(
  lib['CreateMailslotA'],
  [
    Fiddle::TYPE_VOIDP,  # lpName : LPCSTR
    -Fiddle::TYPE_INT,  # nMaxMessageSize : DWORD
    -Fiddle::TYPE_INT,  # lReadTimeout : DWORD
    Fiddle::TYPE_VOIDP,  # lpSecurityAttributes : SECURITY_ATTRIBUTES* optional
  ],
  Fiddle::TYPE_VOIDP)

#[link(name = "kernel32")]
extern "system" {
    fn CreateMailslotA(
        lpName: *const u8,  // LPCSTR
        nMaxMessageSize: u32,  // DWORD
        lReadTimeout: u32,  // DWORD
        lpSecurityAttributes: *mut SECURITY_ATTRIBUTES  // SECURITY_ATTRIBUTES* optional
    ) -> *mut core::ffi::c_void;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("KERNEL32.dll", CharSet = CharSet.Ansi, SetLastError = true)]
public static extern IntPtr CreateMailslotA([MarshalAs(UnmanagedType.LPStr)] string lpName, uint nMaxMessageSize, uint lReadTimeout, IntPtr lpSecurityAttributes);
"@
$api = Add-Type -MemberDefinition $sig -Name 'KERNEL32_CreateMailslotA' -Namespace Win32 -PassThru
# $api::CreateMailslotA(lpName, nMaxMessageSize, lReadTimeout, lpSecurityAttributes)

#uselib "KERNEL32.dll"
#func global CreateMailslotA "CreateMailslotA" sptr, sptr, sptr, sptr
; CreateMailslotA lpName, nMaxMessageSize, lReadTimeout, varptr(lpSecurityAttributes)   ; 戻り値は stat
; lpName : LPCSTR -> "sptr"
; nMaxMessageSize : DWORD -> "sptr"
; lReadTimeout : DWORD -> "sptr"
; lpSecurityAttributes : SECURITY_ATTRIBUTES* 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 (
	kernel32 = windows.NewLazySystemDLL("KERNEL32.dll")
	procCreateMailslotA = kernel32.NewProc("CreateMailslotA")
)

// lpName (LPCSTR), nMaxMessageSize (DWORD), lReadTimeout (DWORD), lpSecurityAttributes (SECURITY_ATTRIBUTES* optional)
r1, _, err := procCreateMailslotA.Call(
	uintptr(unsafe.Pointer(windows.BytePtrFromString(lpName))),
	uintptr(nMaxMessageSize),
	uintptr(lReadTimeout),
	uintptr(lpSecurityAttributes),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HANDLE

function CreateMailslotA(
  lpName: PAnsiChar;   // LPCSTR
  nMaxMessageSize: DWORD;   // DWORD
  lReadTimeout: DWORD;   // DWORD
  lpSecurityAttributes: Pointer   // SECURITY_ATTRIBUTES* optional
): THandle; stdcall;
  external 'KERNEL32.dll' name 'CreateMailslotA';

result := DllCall("KERNEL32\CreateMailslotA"
    , "AStr", lpName   ; LPCSTR
    , "UInt", nMaxMessageSize   ; DWORD
    , "UInt", lReadTimeout   ; DWORD
    , "Ptr", lpSecurityAttributes   ; SECURITY_ATTRIBUTES* optional
    , "Ptr")   ; return: HANDLE

●CreateMailslotA(lpName, nMaxMessageSize, lReadTimeout, lpSecurityAttributes) = DLL("KERNEL32.dll", "void* CreateMailslotA(char*, dword, dword, void*)")
# 呼び出し: CreateMailslotA(lpName, nMaxMessageSize, lReadTimeout, lpSecurityAttributes)
# lpName : LPCSTR -> "char*"
# nMaxMessageSize : DWORD -> "dword"
# lReadTimeout : DWORD -> "dword"
# lpSecurityAttributes : SECURITY_ATTRIBUTES* optional -> "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 "kernel32" fn CreateMailslotA(
    lpName: [*c]const u8, // LPCSTR
    nMaxMessageSize: u32, // DWORD
    lReadTimeout: u32, // DWORD
    lpSecurityAttributes: [*c]SECURITY_ATTRIBUTES // SECURITY_ATTRIBUTES* optional
) callconv(std.os.windows.WINAPI) ?*anyopaque;

proc CreateMailslotA(
    lpName: cstring,  # LPCSTR
    nMaxMessageSize: uint32,  # DWORD
    lReadTimeout: uint32,  # DWORD
    lpSecurityAttributes: ptr SECURITY_ATTRIBUTES  # SECURITY_ATTRIBUTES* optional
): pointer {.importc: "CreateMailslotA", stdcall, dynlib: "KERNEL32.dll".}

pragma(lib, "kernel32");
extern(Windows)
void* CreateMailslotA(
    const(char)* lpName,   // LPCSTR
    uint nMaxMessageSize,   // DWORD
    uint lReadTimeout,   // DWORD
    SECURITY_ATTRIBUTES* lpSecurityAttributes   // SECURITY_ATTRIBUTES* optional
);

ccall((:CreateMailslotA, "KERNEL32.dll"), stdcall, Ptr{Cvoid},
      (Cstring, UInt32, UInt32, Ptr{SECURITY_ATTRIBUTES}),
      lpName, nMaxMessageSize, lReadTimeout, lpSecurityAttributes)
# lpName : LPCSTR -> Cstring
# nMaxMessageSize : DWORD -> UInt32
# lReadTimeout : DWORD -> UInt32
# lpSecurityAttributes : SECURITY_ATTRIBUTES* optional -> Ptr{SECURITY_ATTRIBUTES}
# stdcall は 32bit のみ意味を持つ(x64 では無視)。

local ffi = require("ffi")
ffi.cdef[[
void* CreateMailslotA(
    const char* lpName,
    uint32_t nMaxMessageSize,
    uint32_t lReadTimeout,
    void* lpSecurityAttributes);
]]
local kernel32 = ffi.load("kernel32")
-- kernel32.CreateMailslotA(lpName, nMaxMessageSize, lReadTimeout, lpSecurityAttributes)
-- lpName : LPCSTR
-- nMaxMessageSize : DWORD
-- lReadTimeout : DWORD
-- lpSecurityAttributes : SECURITY_ATTRIBUTES* 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('KERNEL32.dll');
const CreateMailslotA = lib.func('__stdcall', 'CreateMailslotA', 'void *', ['str', 'uint32_t', 'uint32_t', 'void *']);
// CreateMailslotA(lpName, nMaxMessageSize, lReadTimeout, lpSecurityAttributes)
// lpName : LPCSTR -> 'str'
// nMaxMessageSize : DWORD -> 'uint32_t'
// lReadTimeout : DWORD -> 'uint32_t'
// lpSecurityAttributes : SECURITY_ATTRIBUTES* optional -> '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("KERNEL32.dll", {
  CreateMailslotA: { parameters: ["buffer", "u32", "u32", "pointer"], result: "pointer" },
});
// lib.symbols.CreateMailslotA(lpName, nMaxMessageSize, lReadTimeout, lpSecurityAttributes)
// lpName : LPCSTR -> "buffer"
// nMaxMessageSize : DWORD -> "u32"
// lReadTimeout : DWORD -> "u32"
// lpSecurityAttributes : SECURITY_ATTRIBUTES* optional -> "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
void* CreateMailslotA(
    const char* lpName,
    uint32_t nMaxMessageSize,
    uint32_t lReadTimeout,
    void* lpSecurityAttributes);
C, "KERNEL32.dll");
// $ffi->CreateMailslotA(lpName, nMaxMessageSize, lReadTimeout, lpSecurityAttributes);
// lpName : LPCSTR
// nMaxMessageSize : DWORD
// lReadTimeout : DWORD
// lpSecurityAttributes : SECURITY_ATTRIBUTES* 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 Kernel32 extends StdCallLibrary {
    Kernel32 INSTANCE = Native.load("kernel32", Kernel32.class, W32APIOptions.ASCII_OPTIONS);
    Pointer CreateMailslotA(
        String lpName,   // LPCSTR
        int nMaxMessageSize,   // DWORD
        int lReadTimeout,   // DWORD
        Pointer lpSecurityAttributes   // SECURITY_ATTRIBUTES* optional
    );
}

@[Link("kernel32")]
lib LibKERNEL32
  fun CreateMailslotA = CreateMailslotA(
    lpName : UInt8*,   # LPCSTR
    nMaxMessageSize : UInt32,   # DWORD
    lReadTimeout : UInt32,   # DWORD
    lpSecurityAttributes : SECURITY_ATTRIBUTES*   # SECURITY_ATTRIBUTES* optional
  ) : Void*
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 CreateMailslotANative = Pointer<Void> Function(Pointer<Utf8>, Uint32, Uint32, Pointer<Void>);
typedef CreateMailslotADart = Pointer<Void> Function(Pointer<Utf8>, int, int, Pointer<Void>);
final CreateMailslotA = DynamicLibrary.open('KERNEL32.dll')
    .lookupFunction<CreateMailslotANative, CreateMailslotADart>('CreateMailslotA');
// lpName : LPCSTR -> Pointer<Utf8>
// nMaxMessageSize : DWORD -> Uint32
// lReadTimeout : DWORD -> Uint32
// lpSecurityAttributes : SECURITY_ATTRIBUTES* optional -> Pointer<Void>
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。

{$mode objfpc}{$H+}
function CreateMailslotA(
  lpName: PAnsiChar;   // LPCSTR
  nMaxMessageSize: DWORD;   // DWORD
  lReadTimeout: DWORD;   // DWORD
  lpSecurityAttributes: Pointer   // SECURITY_ATTRIBUTES* optional
): THandle; stdcall;
  external 'KERNEL32.dll' name 'CreateMailslotA';

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

foreign import stdcall safe "CreateMailslotA"
  c_CreateMailslotA :: CString -> Word32 -> Word32 -> Ptr () -> IO (Ptr ())
-- lpName : LPCSTR -> CString
-- nMaxMessageSize : DWORD -> Word32
-- lReadTimeout : DWORD -> Word32
-- lpSecurityAttributes : SECURITY_ATTRIBUTES* optional -> 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 createmailslota =
  foreign "CreateMailslotA"
    (string @-> uint32_t @-> uint32_t @-> (ptr void) @-> returning (ptr void))
(* lpName : LPCSTR -> string *)
(* nMaxMessageSize : DWORD -> uint32_t *)
(* lReadTimeout : DWORD -> uint32_t *)
(* lpSecurityAttributes : SECURITY_ATTRIBUTES* optional -> (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 kernel32 (t "KERNEL32.dll"))
(cffi:use-foreign-library kernel32)

(cffi:defcfun ("CreateMailslotA" create-mailslot-a :convention :stdcall) :pointer
  (lp-name :string)   ; LPCSTR
  (n-max-message-size :uint32)   ; DWORD
  (l-read-timeout :uint32)   ; DWORD
  (lp-security-attributes :pointer))   ; SECURITY_ATTRIBUTES* optional
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。

use Win32::API;
my $CreateMailslotA = Win32::API::More->new('KERNEL32',
    'HANDLE CreateMailslotA(LPCSTR lpName, DWORD nMaxMessageSize, DWORD lReadTimeout, LPVOID lpSecurityAttributes)');
# my $ret = $CreateMailslotA->Call($lpName, $nMaxMessageSize, $lReadTimeout, $lpSecurityAttributes);
# lpName : LPCSTR -> LPCSTR
# nMaxMessageSize : DWORD -> DWORD
# lReadTimeout : DWORD -> DWORD
# lpSecurityAttributes : SECURITY_ATTRIBUTES* optional -> LPVOID
# 値渡し構造体は pack() した文字列、または Win32::API::Struct を使用。