OpenFileMappingW

// KERNEL32.dll  (Unicode / -W)
#include <windows.h>

HANDLE OpenFileMappingW(
    DWORD dwDesiredAccess,
    BOOL bInheritHandle,
    LPCWSTR lpName
);

<DllImport("KERNEL32.dll", CharSet:=CharSet.Unicode, SetLastError:=True, ExactSpelling:=True)>
Public Shared Function OpenFileMappingW(
    dwDesiredAccess As UInteger,   ' DWORD
    bInheritHandle As Boolean,   ' BOOL
    <MarshalAs(UnmanagedType.LPWStr)> lpName As String   ' LPCWSTR
) As IntPtr
End Function

' dwDesiredAccess : DWORD
' bInheritHandle : BOOL
' lpName : LPCWSTR
Declare PtrSafe Function OpenFileMappingW Lib "kernel32" ( _
    ByVal dwDesiredAccess As Long, _
    ByVal bInheritHandle As Long, _
    ByVal lpName As LongPtr) As LongPtr
' Unicode(W): 文字列は ByVal As LongPtr とし StrPtr(unicodeStr) を渡す
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

OpenFileMappingW = ctypes.windll.kernel32.OpenFileMappingW
OpenFileMappingW.restype = ctypes.c_void_p
OpenFileMappingW.argtypes = [
    wintypes.DWORD,  # dwDesiredAccess : DWORD
    wintypes.BOOL,  # bInheritHandle : BOOL
    wintypes.LPCWSTR,  # lpName : LPCWSTR
]
# GetLastError: use ctypes.GetLastError() (or ctypes.WinDLL(use_last_error=True))

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('KERNEL32.dll')
OpenFileMappingW = Fiddle::Function.new(
  lib['OpenFileMappingW'],
  [
    -Fiddle::TYPE_INT,  # dwDesiredAccess : DWORD
    Fiddle::TYPE_INT,  # bInheritHandle : BOOL
    Fiddle::TYPE_VOIDP,  # lpName : LPCWSTR
  ],
  Fiddle::TYPE_VOIDP)
# Wide strings: pass str.encode("UTF-16LE") + "\x00\x00"

#[link(name = "kernel32")]
extern "system" {
    fn OpenFileMappingW(
        dwDesiredAccess: u32,  // DWORD
        bInheritHandle: i32,  // BOOL
        lpName: *const u16  // LPCWSTR
    ) -> *mut core::ffi::c_void;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("KERNEL32.dll", CharSet = CharSet.Unicode, SetLastError = true)]
public static extern IntPtr OpenFileMappingW(uint dwDesiredAccess, bool bInheritHandle, [MarshalAs(UnmanagedType.LPWStr)] string lpName);
"@
$api = Add-Type -MemberDefinition $sig -Name 'KERNEL32_OpenFileMappingW' -Namespace Win32 -PassThru
# $api::OpenFileMappingW(dwDesiredAccess, bInheritHandle, lpName)

#uselib "KERNEL32.dll"
#func global OpenFileMappingW "OpenFileMappingW" wptr, wptr, wptr
; OpenFileMappingW dwDesiredAccess, bInheritHandle, lpName   ; 戻り値は stat
; dwDesiredAccess : DWORD -> "wptr"
; bInheritHandle : BOOL -> "wptr"
; lpName : LPCWSTR -> "wptr"
; ※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 OpenFileMappingW "OpenFileMappingW" int, int, wstr
; res = OpenFileMappingW(dwDesiredAccess, bInheritHandle, lpName)
; dwDesiredAccess : DWORD -> "int"
; bInheritHandle : BOOL -> "int"
; lpName : LPCWSTR -> "wstr"

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

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

var (
	kernel32 = windows.NewLazySystemDLL("KERNEL32.dll")
	procOpenFileMappingW = kernel32.NewProc("OpenFileMappingW")
)

// dwDesiredAccess (DWORD), bInheritHandle (BOOL), lpName (LPCWSTR)
r1, _, err := procOpenFileMappingW.Call(
	uintptr(dwDesiredAccess),
	uintptr(bInheritHandle),
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(lpName))),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HANDLE

function OpenFileMappingW(
  dwDesiredAccess: DWORD;   // DWORD
  bInheritHandle: BOOL;   // BOOL
  lpName: PWideChar   // LPCWSTR
): THandle; stdcall;
  external 'KERNEL32.dll' name 'OpenFileMappingW';

result := DllCall("KERNEL32\OpenFileMappingW"
    , "UInt", dwDesiredAccess   ; DWORD
    , "Int", bInheritHandle   ; BOOL
    , "WStr", lpName   ; LPCWSTR
    , "Ptr")   ; return: HANDLE

●OpenFileMappingW(dwDesiredAccess, bInheritHandle, lpName) = DLL("KERNEL32.dll", "void* OpenFileMappingW(dword, bool, char*)")
# 呼び出し: OpenFileMappingW(dwDesiredAccess, bInheritHandle, lpName)
# dwDesiredAccess : DWORD -> "dword"
# bInheritHandle : BOOL -> "bool"
# lpName : LPCWSTR -> "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)。
# ※-W(Unicode)関数。なでしこ1はANSIのため -A 版の利用を推奨。

const std = @import("std");

extern "kernel32" fn OpenFileMappingW(
    dwDesiredAccess: u32, // DWORD
    bInheritHandle: i32, // BOOL
    lpName: [*c]const u16 // LPCWSTR
) callconv(std.os.windows.WINAPI) ?*anyopaque;
// Unicode(-W): UTF-16LE のヌル終端バッファ([*c]const u16)を渡す。

proc OpenFileMappingW(
    dwDesiredAccess: uint32,  # DWORD
    bInheritHandle: int32,  # BOOL
    lpName: WideCString  # LPCWSTR
): pointer {.importc: "OpenFileMappingW", stdcall, dynlib: "KERNEL32.dll".}
# Unicode(-W): WideCString は newWideCString("...") で生成。

pragma(lib, "kernel32");
extern(Windows)
void* OpenFileMappingW(
    uint dwDesiredAccess,   // DWORD
    int bInheritHandle,   // BOOL
    const(wchar)* lpName   // LPCWSTR
);

ccall((:OpenFileMappingW, "KERNEL32.dll"), stdcall, Ptr{Cvoid},
      (UInt32, Int32, Cwstring),
      dwDesiredAccess, bInheritHandle, lpName)
# dwDesiredAccess : DWORD -> UInt32
# bInheritHandle : BOOL -> Int32
# lpName : LPCWSTR -> Cwstring
# stdcall は 32bit のみ意味を持つ(x64 では無視)。
# Unicode(-W): Cwstring には transcode(UInt16, "...") 等で UTF-16 を渡す。

local ffi = require("ffi")
ffi.cdef[[
void* OpenFileMappingW(
    uint32_t dwDesiredAccess,
    int32_t bInheritHandle,
    const uint16_t* lpName);
]]
local kernel32 = ffi.load("kernel32")
-- kernel32.OpenFileMappingW(dwDesiredAccess, bInheritHandle, lpName)
-- dwDesiredAccess : DWORD
-- bInheritHandle : BOOL
-- lpName : LPCWSTR
-- 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。
-- Unicode(-W): uint16_t* には UTF-16LE のバッファ(ffi.new("uint16_t[?]", ...))を渡す。

const koffi = require('koffi');
const lib = koffi.load('KERNEL32.dll');
const OpenFileMappingW = lib.func('__stdcall', 'OpenFileMappingW', 'void *', ['uint32_t', 'int32_t', 'str16']);
// OpenFileMappingW(dwDesiredAccess, bInheritHandle, lpName)
// dwDesiredAccess : DWORD -> 'uint32_t'
// bInheritHandle : BOOL -> 'int32_t'
// lpName : LPCWSTR -> 'str16'
// 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", {
  OpenFileMappingW: { parameters: ["u32", "i32", "buffer"], result: "pointer" },
});
// lib.symbols.OpenFileMappingW(dwDesiredAccess, bInheritHandle, lpName)
// dwDesiredAccess : DWORD -> "u32"
// bInheritHandle : BOOL -> "i32"
// lpName : LPCWSTR -> "buffer"
// 文字列は "buffer"。Unicode(-W) は new TextEncoder() ではなく UTF-16LE のバイト列(末尾に \x00\x00)を Uint8Array で渡す。
// 値渡し構造体は { struct: [ ...field types... ] } を使用。

<?php
$ffi = FFI::cdef(<<<C
void* OpenFileMappingW(
    uint32_t dwDesiredAccess,
    int32_t bInheritHandle,
    const uint16_t* lpName);
C, "KERNEL32.dll");
// $ffi->OpenFileMappingW(dwDesiredAccess, bInheritHandle, lpName);
// dwDesiredAccess : DWORD
// bInheritHandle : BOOL
// lpName : LPCWSTR
// 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.UNICODE_OPTIONS);
    Pointer OpenFileMappingW(
        int dwDesiredAccess,   // DWORD
        boolean bInheritHandle,   // BOOL
        WString lpName   // LPCWSTR
    );
}
// Unicode(-W): WString(入力)/char[](出力)で UTF-16 をマーシャリング。

@[Link("kernel32")]
lib LibKERNEL32
  fun OpenFileMappingW = OpenFileMappingW(
    dwDesiredAccess : UInt32,   # DWORD
    bInheritHandle : Int32,   # BOOL
    lpName : UInt16*   # LPCWSTR
  ) : 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 OpenFileMappingWNative = Pointer<Void> Function(Uint32, Int32, Pointer<Utf16>);
typedef OpenFileMappingWDart = Pointer<Void> Function(int, int, Pointer<Utf16>);
final OpenFileMappingW = DynamicLibrary.open('KERNEL32.dll')
    .lookupFunction<OpenFileMappingWNative, OpenFileMappingWDart>('OpenFileMappingW');
// dwDesiredAccess : DWORD -> Uint32
// bInheritHandle : BOOL -> Int32
// lpName : LPCWSTR -> Pointer<Utf16>
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。

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

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

foreign import stdcall safe "OpenFileMappingW"
  c_OpenFileMappingW :: Word32 -> CInt -> CWString -> IO (Ptr ())
-- dwDesiredAccess : DWORD -> Word32
-- bInheritHandle : BOOL -> CInt
-- lpName : LPCWSTR -> CWString
-- 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 openfilemappingw =
  foreign "OpenFileMappingW"
    (uint32_t @-> int32_t @-> (ptr uint16_t) @-> returning (ptr void))
(* dwDesiredAccess : DWORD -> uint32_t *)
(* bInheritHandle : BOOL -> int32_t *)
(* lpName : LPCWSTR -> (ptr uint16_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 kernel32 (t "KERNEL32.dll"))
(cffi:use-foreign-library kernel32)

(cffi:defcfun ("OpenFileMappingW" open-file-mapping-w :convention :stdcall) :pointer
  (dw-desired-access :uint32)   ; DWORD
  (b-inherit-handle :int32)   ; BOOL
  (lp-name (:string :encoding :utf-16le)))   ; LPCWSTR
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。

use Win32::API;
my $OpenFileMappingW = Win32::API::More->new('KERNEL32',
    'HANDLE OpenFileMappingW(DWORD dwDesiredAccess, BOOL bInheritHandle, LPCWSTR lpName)');
# my $ret = $OpenFileMappingW->Call($dwDesiredAccess, $bInheritHandle, $lpName);
# dwDesiredAccess : DWORD -> DWORD
# bInheritHandle : BOOL -> BOOL
# lpName : LPCWSTR -> LPCWSTR
# 値渡し構造体は pack() した文字列、または Win32::API::Struct を使用。
# Unicode(-W): LPCWSTR/LPWSTR は Win32::API が UTF-16 変換を行う。