OpenMutexA

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

HANDLE OpenMutexA(
    DWORD dwDesiredAccess,
    BOOL bInheritHandle,
    LPCSTR lpName
);

<DllImport("KERNEL32.dll", CharSet:=CharSet.Ansi, ExactSpelling:=True)>
Public Shared Function OpenMutexA(
    dwDesiredAccess As UInteger,   ' DWORD
    bInheritHandle As Boolean,   ' BOOL
    <MarshalAs(UnmanagedType.LPStr)> lpName As String   ' LPCSTR
) As IntPtr
End Function

' dwDesiredAccess : DWORD
' bInheritHandle : BOOL
' lpName : LPCSTR
Declare PtrSafe Function OpenMutexA Lib "kernel32" ( _
    ByVal dwDesiredAccess As Long, _
    ByVal bInheritHandle As Long, _
    ByVal lpName As String) As LongPtr
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

OpenMutexA = ctypes.windll.kernel32.OpenMutexA
OpenMutexA.restype = ctypes.c_void_p
OpenMutexA.argtypes = [
    wintypes.DWORD,  # dwDesiredAccess : DWORD
    wintypes.BOOL,  # bInheritHandle : BOOL
    wintypes.LPCSTR,  # lpName : LPCSTR
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('KERNEL32.dll')
OpenMutexA = Fiddle::Function.new(
  lib['OpenMutexA'],
  [
    -Fiddle::TYPE_INT,  # dwDesiredAccess : DWORD
    Fiddle::TYPE_INT,  # bInheritHandle : BOOL
    Fiddle::TYPE_VOIDP,  # lpName : LPCSTR
  ],
  Fiddle::TYPE_VOIDP)

#[link(name = "kernel32")]
extern "system" {
    fn OpenMutexA(
        dwDesiredAccess: u32,  // DWORD
        bInheritHandle: i32,  // BOOL
        lpName: *const u8  // LPCSTR
    ) -> *mut core::ffi::c_void;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("KERNEL32.dll", CharSet = CharSet.Ansi)]
public static extern IntPtr OpenMutexA(uint dwDesiredAccess, bool bInheritHandle, [MarshalAs(UnmanagedType.LPStr)] string lpName);
"@
$api = Add-Type -MemberDefinition $sig -Name 'KERNEL32_OpenMutexA' -Namespace Win32 -PassThru
# $api::OpenMutexA(dwDesiredAccess, bInheritHandle, lpName)

#uselib "KERNEL32.dll"
#func global OpenMutexA "OpenMutexA" sptr, sptr, sptr
; OpenMutexA dwDesiredAccess, bInheritHandle, lpName   ; 戻り値は stat
; dwDesiredAccess : DWORD -> "sptr"
; bInheritHandle : BOOL -> "sptr"
; lpName : LPCSTR -> "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。

#uselib "KERNEL32.dll"
#cfunc global OpenMutexA "OpenMutexA" int, int, str
; res = OpenMutexA(dwDesiredAccess, bInheritHandle, lpName)
; dwDesiredAccess : DWORD -> "int"
; bInheritHandle : BOOL -> "int"
; lpName : LPCSTR -> "str"

; HANDLE OpenMutexA(DWORD dwDesiredAccess, BOOL bInheritHandle, LPCSTR lpName)
#uselib "KERNEL32.dll"
#cfunc global OpenMutexA "OpenMutexA" int, int, str
; res = OpenMutexA(dwDesiredAccess, bInheritHandle, lpName)
; dwDesiredAccess : DWORD -> "int"
; bInheritHandle : BOOL -> "int"
; lpName : LPCSTR -> "str"

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

var (
	kernel32 = windows.NewLazySystemDLL("KERNEL32.dll")
	procOpenMutexA = kernel32.NewProc("OpenMutexA")
)

// dwDesiredAccess (DWORD), bInheritHandle (BOOL), lpName (LPCSTR)
r1, _, err := procOpenMutexA.Call(
	uintptr(dwDesiredAccess),
	uintptr(bInheritHandle),
	uintptr(unsafe.Pointer(windows.BytePtrFromString(lpName))),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HANDLE

function OpenMutexA(
  dwDesiredAccess: DWORD;   // DWORD
  bInheritHandle: BOOL;   // BOOL
  lpName: PAnsiChar   // LPCSTR
): THandle; stdcall;
  external 'KERNEL32.dll' name 'OpenMutexA';

result := DllCall("KERNEL32\OpenMutexA"
    , "UInt", dwDesiredAccess   ; DWORD
    , "Int", bInheritHandle   ; BOOL
    , "AStr", lpName   ; LPCSTR
    , "Ptr")   ; return: HANDLE

●OpenMutexA(dwDesiredAccess, bInheritHandle, lpName) = DLL("KERNEL32.dll", "void* OpenMutexA(dword, bool, char*)")
# 呼び出し: OpenMutexA(dwDesiredAccess, bInheritHandle, lpName)
# dwDesiredAccess : DWORD -> "dword"
# bInheritHandle : BOOL -> "bool"
# lpName : LPCSTR -> "char*"
# 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 OpenMutexA(
    dwDesiredAccess: u32, // DWORD
    bInheritHandle: i32, // BOOL
    lpName: [*c]const u8 // LPCSTR
) callconv(std.os.windows.WINAPI) ?*anyopaque;

proc OpenMutexA(
    dwDesiredAccess: uint32,  # DWORD
    bInheritHandle: int32,  # BOOL
    lpName: cstring  # LPCSTR
): pointer {.importc: "OpenMutexA", stdcall, dynlib: "KERNEL32.dll".}

pragma(lib, "kernel32");
extern(Windows)
void* OpenMutexA(
    uint dwDesiredAccess,   // DWORD
    int bInheritHandle,   // BOOL
    const(char)* lpName   // LPCSTR
);

ccall((:OpenMutexA, "KERNEL32.dll"), stdcall, Ptr{Cvoid},
      (UInt32, Int32, Cstring),
      dwDesiredAccess, bInheritHandle, lpName)
# dwDesiredAccess : DWORD -> UInt32
# bInheritHandle : BOOL -> Int32
# lpName : LPCSTR -> Cstring
# stdcall は 32bit のみ意味を持つ(x64 では無視)。

local ffi = require("ffi")
ffi.cdef[[
void* OpenMutexA(
    uint32_t dwDesiredAccess,
    int32_t bInheritHandle,
    const char* lpName);
]]
local kernel32 = ffi.load("kernel32")
-- kernel32.OpenMutexA(dwDesiredAccess, bInheritHandle, lpName)
-- dwDesiredAccess : DWORD
-- bInheritHandle : BOOL
-- lpName : LPCSTR
-- 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 OpenMutexA = lib.func('__stdcall', 'OpenMutexA', 'void *', ['uint32_t', 'int32_t', 'str']);
// OpenMutexA(dwDesiredAccess, bInheritHandle, lpName)
// dwDesiredAccess : DWORD -> 'uint32_t'
// bInheritHandle : BOOL -> 'int32_t'
// lpName : LPCSTR -> 'str'
// 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", {
  OpenMutexA: { parameters: ["u32", "i32", "buffer"], result: "pointer" },
});
// lib.symbols.OpenMutexA(dwDesiredAccess, bInheritHandle, lpName)
// dwDesiredAccess : DWORD -> "u32"
// bInheritHandle : BOOL -> "i32"
// lpName : LPCSTR -> "buffer"
// 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* OpenMutexA(
    uint32_t dwDesiredAccess,
    int32_t bInheritHandle,
    const char* lpName);
C, "KERNEL32.dll");
// $ffi->OpenMutexA(dwDesiredAccess, bInheritHandle, lpName);
// dwDesiredAccess : DWORD
// bInheritHandle : BOOL
// lpName : LPCSTR
// 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 OpenMutexA(
        int dwDesiredAccess,   // DWORD
        boolean bInheritHandle,   // BOOL
        String lpName   // LPCSTR
    );
}

@[Link("kernel32")]
lib LibKERNEL32
  fun OpenMutexA = OpenMutexA(
    dwDesiredAccess : UInt32,   # DWORD
    bInheritHandle : Int32,   # BOOL
    lpName : UInt8*   # LPCSTR
  ) : 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 OpenMutexANative = Pointer<Void> Function(Uint32, Int32, Pointer<Utf8>);
typedef OpenMutexADart = Pointer<Void> Function(int, int, Pointer<Utf8>);
final OpenMutexA = DynamicLibrary.open('KERNEL32.dll')
    .lookupFunction<OpenMutexANative, OpenMutexADart>('OpenMutexA');
// dwDesiredAccess : DWORD -> Uint32
// bInheritHandle : BOOL -> Int32
// lpName : LPCSTR -> Pointer<Utf8>
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。

{$mode objfpc}{$H+}
function OpenMutexA(
  dwDesiredAccess: DWORD;   // DWORD
  bInheritHandle: BOOL;   // BOOL
  lpName: PAnsiChar   // LPCSTR
): THandle; stdcall;
  external 'KERNEL32.dll' name 'OpenMutexA';

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

foreign import stdcall safe "OpenMutexA"
  c_OpenMutexA :: Word32 -> CInt -> CString -> IO (Ptr ())
-- dwDesiredAccess : DWORD -> Word32
-- bInheritHandle : BOOL -> CInt
-- lpName : LPCSTR -> CString
-- 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 openmutexa =
  foreign "OpenMutexA"
    (uint32_t @-> int32_t @-> string @-> returning (ptr void))
(* dwDesiredAccess : DWORD -> uint32_t *)
(* bInheritHandle : BOOL -> int32_t *)
(* lpName : LPCSTR -> string *)
(* 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 ("OpenMutexA" open-mutex-a :convention :stdcall) :pointer
  (dw-desired-access :uint32)   ; DWORD
  (b-inherit-handle :int32)   ; BOOL
  (lp-name :string))   ; LPCSTR
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。

use Win32::API;
my $OpenMutexA = Win32::API::More->new('KERNEL32',
    'HANDLE OpenMutexA(DWORD dwDesiredAccess, BOOL bInheritHandle, LPCSTR lpName)');
# my $ret = $OpenMutexA->Call($dwDesiredAccess, $bInheritHandle, $lpName);
# dwDesiredAccess : DWORD -> DWORD
# bInheritHandle : BOOL -> BOOL
# lpName : LPCSTR -> LPCSTR
# 値渡し構造体は pack() した文字列、または Win32::API::Struct を使用。