MultiByteToWideChar

// KERNEL32.dll
#include <windows.h>

INT MultiByteToWideChar(
    DWORD CodePage,
    MULTI_BYTE_TO_WIDE_CHAR_FLAGS dwFlags,
    LPCSTR lpMultiByteStr,
    INT cbMultiByte,
    LPWSTR lpWideCharStr,   // optional
    INT cchWideChar
);

<DllImport("KERNEL32.dll", SetLastError:=True, ExactSpelling:=True)>
Public Shared Function MultiByteToWideChar(
    CodePage As UInteger,   ' DWORD
    dwFlags As UInteger,   ' MULTI_BYTE_TO_WIDE_CHAR_FLAGS
    <MarshalAs(UnmanagedType.LPStr)> lpMultiByteStr As String,   ' LPCSTR
    cbMultiByte As Integer,   ' INT
    <MarshalAs(UnmanagedType.LPWStr)> lpWideCharStr As System.Text.StringBuilder,   ' LPWSTR optional, out
    cchWideChar As Integer   ' INT
) As Integer
End Function

' CodePage : DWORD
' dwFlags : MULTI_BYTE_TO_WIDE_CHAR_FLAGS
' lpMultiByteStr : LPCSTR
' cbMultiByte : INT
' lpWideCharStr : LPWSTR optional, out
' cchWideChar : INT
Declare PtrSafe Function MultiByteToWideChar Lib "kernel32" ( _
    ByVal CodePage As Long, _
    ByVal dwFlags As Long, _
    ByVal lpMultiByteStr As String, _
    ByVal cbMultiByte As Long, _
    ByVal lpWideCharStr As LongPtr, _
    ByVal cchWideChar As Long) As Long
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

MultiByteToWideChar = ctypes.windll.kernel32.MultiByteToWideChar
MultiByteToWideChar.restype = ctypes.c_int
MultiByteToWideChar.argtypes = [
    wintypes.DWORD,  # CodePage : DWORD
    wintypes.DWORD,  # dwFlags : MULTI_BYTE_TO_WIDE_CHAR_FLAGS
    wintypes.LPCSTR,  # lpMultiByteStr : LPCSTR
    ctypes.c_int,  # cbMultiByte : INT
    wintypes.LPWSTR,  # lpWideCharStr : LPWSTR optional, out
    ctypes.c_int,  # cchWideChar : INT
]
# GetLastError: use ctypes.GetLastError() (or ctypes.WinDLL(use_last_error=True))

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('KERNEL32.dll')
MultiByteToWideChar = Fiddle::Function.new(
  lib['MultiByteToWideChar'],
  [
    -Fiddle::TYPE_INT,  # CodePage : DWORD
    -Fiddle::TYPE_INT,  # dwFlags : MULTI_BYTE_TO_WIDE_CHAR_FLAGS
    Fiddle::TYPE_VOIDP,  # lpMultiByteStr : LPCSTR
    Fiddle::TYPE_INT,  # cbMultiByte : INT
    Fiddle::TYPE_VOIDP,  # lpWideCharStr : LPWSTR optional, out
    Fiddle::TYPE_INT,  # cchWideChar : INT
  ],
  Fiddle::TYPE_INT)

#[link(name = "kernel32")]
extern "system" {
    fn MultiByteToWideChar(
        CodePage: u32,  // DWORD
        dwFlags: u32,  // MULTI_BYTE_TO_WIDE_CHAR_FLAGS
        lpMultiByteStr: *const u8,  // LPCSTR
        cbMultiByte: i32,  // INT
        lpWideCharStr: *mut u16,  // LPWSTR optional, out
        cchWideChar: i32  // INT
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("KERNEL32.dll", SetLastError = true)]
public static extern int MultiByteToWideChar(uint CodePage, uint dwFlags, [MarshalAs(UnmanagedType.LPStr)] string lpMultiByteStr, int cbMultiByte, [MarshalAs(UnmanagedType.LPWStr)] System.Text.StringBuilder lpWideCharStr, int cchWideChar);
"@
$api = Add-Type -MemberDefinition $sig -Name 'KERNEL32_MultiByteToWideChar' -Namespace Win32 -PassThru
# $api::MultiByteToWideChar(CodePage, dwFlags, lpMultiByteStr, cbMultiByte, lpWideCharStr, cchWideChar)

#uselib "KERNEL32.dll"
#func global MultiByteToWideChar "MultiByteToWideChar" sptr, sptr, sptr, sptr, sptr, sptr
; MultiByteToWideChar CodePage, dwFlags, lpMultiByteStr, cbMultiByte, varptr(lpWideCharStr), cchWideChar   ; 戻り値は stat
; CodePage : DWORD -> "sptr"
; dwFlags : MULTI_BYTE_TO_WIDE_CHAR_FLAGS -> "sptr"
; lpMultiByteStr : LPCSTR -> "sptr"
; cbMultiByte : INT -> "sptr"
; lpWideCharStr : LPWSTR optional, out -> "sptr"
; cchWideChar : INT -> "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")
	procMultiByteToWideChar = kernel32.NewProc("MultiByteToWideChar")
)

// CodePage (DWORD), dwFlags (MULTI_BYTE_TO_WIDE_CHAR_FLAGS), lpMultiByteStr (LPCSTR), cbMultiByte (INT), lpWideCharStr (LPWSTR optional, out), cchWideChar (INT)
r1, _, err := procMultiByteToWideChar.Call(
	uintptr(CodePage),
	uintptr(dwFlags),
	uintptr(unsafe.Pointer(windows.BytePtrFromString(lpMultiByteStr))),
	uintptr(cbMultiByte),
	uintptr(lpWideCharStr),
	uintptr(cchWideChar),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // INT

function MultiByteToWideChar(
  CodePage: DWORD;   // DWORD
  dwFlags: DWORD;   // MULTI_BYTE_TO_WIDE_CHAR_FLAGS
  lpMultiByteStr: PAnsiChar;   // LPCSTR
  cbMultiByte: Integer;   // INT
  lpWideCharStr: PWideChar;   // LPWSTR optional, out
  cchWideChar: Integer   // INT
): Integer; stdcall;
  external 'KERNEL32.dll' name 'MultiByteToWideChar';

result := DllCall("KERNEL32\MultiByteToWideChar"
    , "UInt", CodePage   ; DWORD
    , "UInt", dwFlags   ; MULTI_BYTE_TO_WIDE_CHAR_FLAGS
    , "AStr", lpMultiByteStr   ; LPCSTR
    , "Int", cbMultiByte   ; INT
    , "Ptr", lpWideCharStr   ; LPWSTR optional, out
    , "Int", cchWideChar   ; INT
    , "Int")   ; return: INT

●MultiByteToWideChar(CodePage, dwFlags, lpMultiByteStr, cbMultiByte, lpWideCharStr, cchWideChar) = DLL("KERNEL32.dll", "int MultiByteToWideChar(dword, dword, char*, int, char*, int)")
# 呼び出し: MultiByteToWideChar(CodePage, dwFlags, lpMultiByteStr, cbMultiByte, lpWideCharStr, cchWideChar)
# CodePage : DWORD -> "dword"
# dwFlags : MULTI_BYTE_TO_WIDE_CHAR_FLAGS -> "dword"
# lpMultiByteStr : LPCSTR -> "char*"
# cbMultiByte : INT -> "int"
# lpWideCharStr : LPWSTR optional, out -> "char*"
# cchWideChar : INT -> "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 "kernel32" fn MultiByteToWideChar(
    CodePage: u32, // DWORD
    dwFlags: u32, // MULTI_BYTE_TO_WIDE_CHAR_FLAGS
    lpMultiByteStr: [*c]const u8, // LPCSTR
    cbMultiByte: i32, // INT
    lpWideCharStr: [*c]u16, // LPWSTR optional, out
    cchWideChar: i32 // INT
) callconv(std.os.windows.WINAPI) i32;

proc MultiByteToWideChar(
    CodePage: uint32,  # DWORD
    dwFlags: uint32,  # MULTI_BYTE_TO_WIDE_CHAR_FLAGS
    lpMultiByteStr: cstring,  # LPCSTR
    cbMultiByte: int32,  # INT
    lpWideCharStr: ptr uint16,  # LPWSTR optional, out
    cchWideChar: int32  # INT
): int32 {.importc: "MultiByteToWideChar", stdcall, dynlib: "KERNEL32.dll".}

pragma(lib, "kernel32");
extern(Windows)
int MultiByteToWideChar(
    uint CodePage,   // DWORD
    uint dwFlags,   // MULTI_BYTE_TO_WIDE_CHAR_FLAGS
    const(char)* lpMultiByteStr,   // LPCSTR
    int cbMultiByte,   // INT
    wchar* lpWideCharStr,   // LPWSTR optional, out
    int cchWideChar   // INT
);

ccall((:MultiByteToWideChar, "KERNEL32.dll"), stdcall, Int32,
      (UInt32, UInt32, Cstring, Int32, Ptr{UInt16}, Int32),
      CodePage, dwFlags, lpMultiByteStr, cbMultiByte, lpWideCharStr, cchWideChar)
# CodePage : DWORD -> UInt32
# dwFlags : MULTI_BYTE_TO_WIDE_CHAR_FLAGS -> UInt32
# lpMultiByteStr : LPCSTR -> Cstring
# cbMultiByte : INT -> Int32
# lpWideCharStr : LPWSTR optional, out -> Ptr{UInt16}
# cchWideChar : INT -> Int32
# stdcall は 32bit のみ意味を持つ(x64 では無視)。

local ffi = require("ffi")
ffi.cdef[[
int32_t MultiByteToWideChar(
    uint32_t CodePage,
    uint32_t dwFlags,
    const char* lpMultiByteStr,
    int32_t cbMultiByte,
    uint16_t* lpWideCharStr,
    int32_t cchWideChar);
]]
local kernel32 = ffi.load("kernel32")
-- kernel32.MultiByteToWideChar(CodePage, dwFlags, lpMultiByteStr, cbMultiByte, lpWideCharStr, cchWideChar)
-- CodePage : DWORD
-- dwFlags : MULTI_BYTE_TO_WIDE_CHAR_FLAGS
-- lpMultiByteStr : LPCSTR
-- cbMultiByte : INT
-- lpWideCharStr : LPWSTR optional, out
-- cchWideChar : INT
-- 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 MultiByteToWideChar = lib.func('__stdcall', 'MultiByteToWideChar', 'int32_t', ['uint32_t', 'uint32_t', 'str', 'int32_t', 'uint16_t *', 'int32_t']);
// MultiByteToWideChar(CodePage, dwFlags, lpMultiByteStr, cbMultiByte, lpWideCharStr, cchWideChar)
// CodePage : DWORD -> 'uint32_t'
// dwFlags : MULTI_BYTE_TO_WIDE_CHAR_FLAGS -> 'uint32_t'
// lpMultiByteStr : LPCSTR -> 'str'
// cbMultiByte : INT -> 'int32_t'
// lpWideCharStr : LPWSTR optional, out -> 'uint16_t *'
// cchWideChar : INT -> 'int32_t'
// 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", {
  MultiByteToWideChar: { parameters: ["u32", "u32", "buffer", "i32", "buffer", "i32"], result: "i32" },
});
// lib.symbols.MultiByteToWideChar(CodePage, dwFlags, lpMultiByteStr, cbMultiByte, lpWideCharStr, cchWideChar)
// CodePage : DWORD -> "u32"
// dwFlags : MULTI_BYTE_TO_WIDE_CHAR_FLAGS -> "u32"
// lpMultiByteStr : LPCSTR -> "buffer"
// cbMultiByte : INT -> "i32"
// lpWideCharStr : LPWSTR optional, out -> "buffer"
// cchWideChar : INT -> "i32"
// 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
int32_t MultiByteToWideChar(
    uint32_t CodePage,
    uint32_t dwFlags,
    const char* lpMultiByteStr,
    int32_t cbMultiByte,
    uint16_t* lpWideCharStr,
    int32_t cchWideChar);
C, "KERNEL32.dll");
// $ffi->MultiByteToWideChar(CodePage, dwFlags, lpMultiByteStr, cbMultiByte, lpWideCharStr, cchWideChar);
// CodePage : DWORD
// dwFlags : MULTI_BYTE_TO_WIDE_CHAR_FLAGS
// lpMultiByteStr : LPCSTR
// cbMultiByte : INT
// lpWideCharStr : LPWSTR optional, out
// cchWideChar : INT
// 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);
    int MultiByteToWideChar(
        int CodePage,   // DWORD
        int dwFlags,   // MULTI_BYTE_TO_WIDE_CHAR_FLAGS
        String lpMultiByteStr,   // LPCSTR
        int cbMultiByte,   // INT
        char[] lpWideCharStr,   // LPWSTR optional, out
        int cchWideChar   // INT
    );
}

@[Link("kernel32")]
lib LibKERNEL32
  fun MultiByteToWideChar = MultiByteToWideChar(
    CodePage : UInt32,   # DWORD
    dwFlags : UInt32,   # MULTI_BYTE_TO_WIDE_CHAR_FLAGS
    lpMultiByteStr : UInt8*,   # LPCSTR
    cbMultiByte : Int32,   # INT
    lpWideCharStr : UInt16*,   # LPWSTR optional, out
    cchWideChar : Int32   # INT
  ) : 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 MultiByteToWideCharNative = Int32 Function(Uint32, Uint32, Pointer<Utf8>, Int32, Pointer<Utf16>, Int32);
typedef MultiByteToWideCharDart = int Function(int, int, Pointer<Utf8>, int, Pointer<Utf16>, int);
final MultiByteToWideChar = DynamicLibrary.open('KERNEL32.dll')
    .lookupFunction<MultiByteToWideCharNative, MultiByteToWideCharDart>('MultiByteToWideChar');
// CodePage : DWORD -> Uint32
// dwFlags : MULTI_BYTE_TO_WIDE_CHAR_FLAGS -> Uint32
// lpMultiByteStr : LPCSTR -> Pointer<Utf8>
// cbMultiByte : INT -> Int32
// lpWideCharStr : LPWSTR optional, out -> Pointer<Utf16>
// cchWideChar : INT -> Int32
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。

{$mode objfpc}{$H+}
function MultiByteToWideChar(
  CodePage: DWORD;   // DWORD
  dwFlags: DWORD;   // MULTI_BYTE_TO_WIDE_CHAR_FLAGS
  lpMultiByteStr: PAnsiChar;   // LPCSTR
  cbMultiByte: Integer;   // INT
  lpWideCharStr: PWideChar;   // LPWSTR optional, out
  cchWideChar: Integer   // INT
): Integer; stdcall;
  external 'KERNEL32.dll' name 'MultiByteToWideChar';

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

foreign import stdcall safe "MultiByteToWideChar"
  c_MultiByteToWideChar :: Word32 -> Word32 -> CString -> Int32 -> CWString -> Int32 -> IO Int32
-- CodePage : DWORD -> Word32
-- dwFlags : MULTI_BYTE_TO_WIDE_CHAR_FLAGS -> Word32
-- lpMultiByteStr : LPCSTR -> CString
-- cbMultiByte : INT -> Int32
-- lpWideCharStr : LPWSTR optional, out -> CWString
-- cchWideChar : INT -> Int32
-- 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 multibytetowidechar =
  foreign "MultiByteToWideChar"
    (uint32_t @-> uint32_t @-> string @-> int32_t @-> (ptr uint16_t) @-> int32_t @-> returning int32_t)
(* CodePage : DWORD -> uint32_t *)
(* dwFlags : MULTI_BYTE_TO_WIDE_CHAR_FLAGS -> uint32_t *)
(* lpMultiByteStr : LPCSTR -> string *)
(* cbMultiByte : INT -> int32_t *)
(* lpWideCharStr : LPWSTR optional, out -> (ptr uint16_t) *)
(* cchWideChar : INT -> int32_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 ("MultiByteToWideChar" multi-byte-to-wide-char :convention :stdcall) :int32
  (code-page :uint32)   ; DWORD
  (dw-flags :uint32)   ; MULTI_BYTE_TO_WIDE_CHAR_FLAGS
  (lp-multi-byte-str :string)   ; LPCSTR
  (cb-multi-byte :int32)   ; INT
  (lp-wide-char-str :pointer)   ; LPWSTR optional, out
  (cch-wide-char :int32))   ; INT
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。

use Win32::API;
my $MultiByteToWideChar = Win32::API::More->new('KERNEL32',
    'int MultiByteToWideChar(DWORD CodePage, DWORD dwFlags, LPCSTR lpMultiByteStr, int cbMultiByte, LPWSTR lpWideCharStr, int cchWideChar)');
# my $ret = $MultiByteToWideChar->Call($CodePage, $dwFlags, $lpMultiByteStr, $cbMultiByte, $lpWideCharStr, $cchWideChar);
# CodePage : DWORD -> DWORD
# dwFlags : MULTI_BYTE_TO_WIDE_CHAR_FLAGS -> DWORD
# lpMultiByteStr : LPCSTR -> LPCSTR
# cbMultiByte : INT -> int
# lpWideCharStr : LPWSTR optional, out -> LPWSTR
# cchWideChar : INT -> int
# 値渡し構造体は pack() した文字列、または Win32::API::Struct を使用。