mciSendStringW

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

DWORD mciSendStringW(
    LPCWSTR lpstrCommand,
    LPWSTR lpstrReturnString,   // optional
    DWORD uReturnLength,
    HWND hwndCallback   // optional
);

<DllImport("WINMM.dll", CharSet:=CharSet.Unicode, ExactSpelling:=True)>
Public Shared Function mciSendStringW(
    <MarshalAs(UnmanagedType.LPWStr)> lpstrCommand As String,   ' LPCWSTR
    <MarshalAs(UnmanagedType.LPWStr)> lpstrReturnString As System.Text.StringBuilder,   ' LPWSTR optional, out
    uReturnLength As UInteger,   ' DWORD
    hwndCallback As IntPtr   ' HWND optional
) As UInteger
End Function

' lpstrCommand : LPCWSTR
' lpstrReturnString : LPWSTR optional, out
' uReturnLength : DWORD
' hwndCallback : HWND optional
Declare PtrSafe Function mciSendStringW Lib "winmm" ( _
    ByVal lpstrCommand As LongPtr, _
    ByVal lpstrReturnString As LongPtr, _
    ByVal uReturnLength As Long, _
    ByVal hwndCallback As LongPtr) As Long
' 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

mciSendStringW = ctypes.windll.winmm.mciSendStringW
mciSendStringW.restype = wintypes.DWORD
mciSendStringW.argtypes = [
    wintypes.LPCWSTR,  # lpstrCommand : LPCWSTR
    wintypes.LPWSTR,  # lpstrReturnString : LPWSTR optional, out
    wintypes.DWORD,  # uReturnLength : DWORD
    wintypes.HANDLE,  # hwndCallback : HWND optional
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('WINMM.dll')
mciSendStringW = Fiddle::Function.new(
  lib['mciSendStringW'],
  [
    Fiddle::TYPE_VOIDP,  # lpstrCommand : LPCWSTR
    Fiddle::TYPE_VOIDP,  # lpstrReturnString : LPWSTR optional, out
    -Fiddle::TYPE_INT,  # uReturnLength : DWORD
    Fiddle::TYPE_VOIDP,  # hwndCallback : HWND optional
  ],
  -Fiddle::TYPE_INT)
# Wide strings: pass str.encode("UTF-16LE") + "\x00\x00"

#[link(name = "winmm")]
extern "system" {
    fn mciSendStringW(
        lpstrCommand: *const u16,  // LPCWSTR
        lpstrReturnString: *mut u16,  // LPWSTR optional, out
        uReturnLength: u32,  // DWORD
        hwndCallback: *mut core::ffi::c_void  // HWND optional
    ) -> u32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("WINMM.dll", CharSet = CharSet.Unicode)]
public static extern uint mciSendStringW([MarshalAs(UnmanagedType.LPWStr)] string lpstrCommand, [MarshalAs(UnmanagedType.LPWStr)] System.Text.StringBuilder lpstrReturnString, uint uReturnLength, IntPtr hwndCallback);
"@
$api = Add-Type -MemberDefinition $sig -Name 'WINMM_mciSendStringW' -Namespace Win32 -PassThru
# $api::mciSendStringW(lpstrCommand, lpstrReturnString, uReturnLength, hwndCallback)

#uselib "WINMM.dll"
#func global mciSendStringW "mciSendStringW" wptr, wptr, wptr, wptr
; mciSendStringW lpstrCommand, varptr(lpstrReturnString), uReturnLength, hwndCallback   ; 戻り値は stat
; lpstrCommand : LPCWSTR -> "wptr"
; lpstrReturnString : LPWSTR optional, out -> "wptr"
; uReturnLength : DWORD -> "wptr"
; hwndCallback : HWND optional -> "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。

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

var (
	winmm = windows.NewLazySystemDLL("WINMM.dll")
	procmciSendStringW = winmm.NewProc("mciSendStringW")
)

// lpstrCommand (LPCWSTR), lpstrReturnString (LPWSTR optional, out), uReturnLength (DWORD), hwndCallback (HWND optional)
r1, _, err := procmciSendStringW.Call(
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(lpstrCommand))),
	uintptr(lpstrReturnString),
	uintptr(uReturnLength),
	uintptr(hwndCallback),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // DWORD

function mciSendStringW(
  lpstrCommand: PWideChar;   // LPCWSTR
  lpstrReturnString: PWideChar;   // LPWSTR optional, out
  uReturnLength: DWORD;   // DWORD
  hwndCallback: THandle   // HWND optional
): DWORD; stdcall;
  external 'WINMM.dll' name 'mciSendStringW';

result := DllCall("WINMM\mciSendStringW"
    , "WStr", lpstrCommand   ; LPCWSTR
    , "Ptr", lpstrReturnString   ; LPWSTR optional, out
    , "UInt", uReturnLength   ; DWORD
    , "Ptr", hwndCallback   ; HWND optional
    , "UInt")   ; return: DWORD

●mciSendStringW(lpstrCommand, lpstrReturnString, uReturnLength, hwndCallback) = DLL("WINMM.dll", "dword mciSendStringW(char*, char*, dword, void*)")
# 呼び出し: mciSendStringW(lpstrCommand, lpstrReturnString, uReturnLength, hwndCallback)
# lpstrCommand : LPCWSTR -> "char*"
# lpstrReturnString : LPWSTR optional, out -> "char*"
# uReturnLength : DWORD -> "dword"
# hwndCallback : HWND 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)。
# ※-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 "winmm" fn mciSendStringW(
    lpstrCommand: [*c]const u16, // LPCWSTR
    lpstrReturnString: [*c]u16, // LPWSTR optional, out
    uReturnLength: u32, // DWORD
    hwndCallback: ?*anyopaque // HWND optional
) callconv(std.os.windows.WINAPI) u32;
// Unicode(-W): UTF-16LE のヌル終端バッファ([*c]const u16)を渡す。

proc mciSendStringW(
    lpstrCommand: WideCString,  # LPCWSTR
    lpstrReturnString: ptr uint16,  # LPWSTR optional, out
    uReturnLength: uint32,  # DWORD
    hwndCallback: pointer  # HWND optional
): uint32 {.importc: "mciSendStringW", stdcall, dynlib: "WINMM.dll".}
# Unicode(-W): WideCString は newWideCString("...") で生成。

pragma(lib, "winmm");
extern(Windows)
uint mciSendStringW(
    const(wchar)* lpstrCommand,   // LPCWSTR
    wchar* lpstrReturnString,   // LPWSTR optional, out
    uint uReturnLength,   // DWORD
    void* hwndCallback   // HWND optional
);

ccall((:mciSendStringW, "WINMM.dll"), stdcall, UInt32,
      (Cwstring, Ptr{UInt16}, UInt32, Ptr{Cvoid}),
      lpstrCommand, lpstrReturnString, uReturnLength, hwndCallback)
# lpstrCommand : LPCWSTR -> Cwstring
# lpstrReturnString : LPWSTR optional, out -> Ptr{UInt16}
# uReturnLength : DWORD -> UInt32
# hwndCallback : HWND optional -> Ptr{Cvoid}
# 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[[
uint32_t mciSendStringW(
    const uint16_t* lpstrCommand,
    uint16_t* lpstrReturnString,
    uint32_t uReturnLength,
    void* hwndCallback);
]]
local winmm = ffi.load("winmm")
-- winmm.mciSendStringW(lpstrCommand, lpstrReturnString, uReturnLength, hwndCallback)
-- lpstrCommand : LPCWSTR
-- lpstrReturnString : LPWSTR optional, out
-- uReturnLength : DWORD
-- hwndCallback : HWND 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。
-- 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('WINMM.dll');
const mciSendStringW = lib.func('__stdcall', 'mciSendStringW', 'uint32_t', ['str16', 'uint16_t *', 'uint32_t', 'void *']);
// mciSendStringW(lpstrCommand, lpstrReturnString, uReturnLength, hwndCallback)
// lpstrCommand : LPCWSTR -> 'str16'
// lpstrReturnString : LPWSTR optional, out -> 'uint16_t *'
// uReturnLength : DWORD -> 'uint32_t'
// hwndCallback : HWND 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("WINMM.dll", {
  mciSendStringW: { parameters: ["buffer", "buffer", "u32", "pointer"], result: "u32" },
});
// lib.symbols.mciSendStringW(lpstrCommand, lpstrReturnString, uReturnLength, hwndCallback)
// lpstrCommand : LPCWSTR -> "buffer"
// lpstrReturnString : LPWSTR optional, out -> "buffer"
// uReturnLength : DWORD -> "u32"
// hwndCallback : HWND optional -> "pointer"
// 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
uint32_t mciSendStringW(
    const uint16_t* lpstrCommand,
    uint16_t* lpstrReturnString,
    uint32_t uReturnLength,
    void* hwndCallback);
C, "WINMM.dll");
// $ffi->mciSendStringW(lpstrCommand, lpstrReturnString, uReturnLength, hwndCallback);
// lpstrCommand : LPCWSTR
// lpstrReturnString : LPWSTR optional, out
// uReturnLength : DWORD
// hwndCallback : HWND 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 Winmm extends StdCallLibrary {
    Winmm INSTANCE = Native.load("winmm", Winmm.class, W32APIOptions.UNICODE_OPTIONS);
    int mciSendStringW(
        WString lpstrCommand,   // LPCWSTR
        char[] lpstrReturnString,   // LPWSTR optional, out
        int uReturnLength,   // DWORD
        Pointer hwndCallback   // HWND optional
    );
}
// Unicode(-W): WString(入力)/char[](出力)で UTF-16 をマーシャリング。

@[Link("winmm")]
lib LibWINMM
  fun mciSendStringW = mciSendStringW(
    lpstrCommand : UInt16*,   # LPCWSTR
    lpstrReturnString : UInt16*,   # LPWSTR optional, out
    uReturnLength : UInt32,   # DWORD
    hwndCallback : Void*   # HWND optional
  ) : UInt32
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 mciSendStringWNative = Uint32 Function(Pointer<Utf16>, Pointer<Utf16>, Uint32, Pointer<Void>);
typedef mciSendStringWDart = int Function(Pointer<Utf16>, Pointer<Utf16>, int, Pointer<Void>);
final mciSendStringW = DynamicLibrary.open('WINMM.dll')
    .lookupFunction<mciSendStringWNative, mciSendStringWDart>('mciSendStringW');
// lpstrCommand : LPCWSTR -> Pointer<Utf16>
// lpstrReturnString : LPWSTR optional, out -> Pointer<Utf16>
// uReturnLength : DWORD -> Uint32
// hwndCallback : HWND optional -> Pointer<Void>
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。

{$mode objfpc}{$H+}
function mciSendStringW(
  lpstrCommand: PWideChar;   // LPCWSTR
  lpstrReturnString: PWideChar;   // LPWSTR optional, out
  uReturnLength: DWORD;   // DWORD
  hwndCallback: THandle   // HWND optional
): DWORD; stdcall;
  external 'WINMM.dll' name 'mciSendStringW';

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

foreign import stdcall safe "mciSendStringW"
  c_mciSendStringW :: CWString -> CWString -> Word32 -> Ptr () -> IO Word32
-- lpstrCommand : LPCWSTR -> CWString
-- lpstrReturnString : LPWSTR optional, out -> CWString
-- uReturnLength : DWORD -> Word32
-- hwndCallback : HWND 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 mcisendstringw =
  foreign "mciSendStringW"
    ((ptr uint16_t) @-> (ptr uint16_t) @-> uint32_t @-> (ptr void) @-> returning uint32_t)
(* lpstrCommand : LPCWSTR -> (ptr uint16_t) *)
(* lpstrReturnString : LPWSTR optional, out -> (ptr uint16_t) *)
(* uReturnLength : DWORD -> uint32_t *)
(* hwndCallback : HWND 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 winmm (t "WINMM.dll"))
(cffi:use-foreign-library winmm)

(cffi:defcfun ("mciSendStringW" mci-send-string-w :convention :stdcall) :uint32
  (lpstr-command (:string :encoding :utf-16le))   ; LPCWSTR
  (lpstr-return-string :pointer)   ; LPWSTR optional, out
  (u-return-length :uint32)   ; DWORD
  (hwnd-callback :pointer))   ; HWND optional
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。

use Win32::API;
my $mciSendStringW = Win32::API::More->new('WINMM',
    'DWORD mciSendStringW(LPCWSTR lpstrCommand, LPWSTR lpstrReturnString, DWORD uReturnLength, HANDLE hwndCallback)');
# my $ret = $mciSendStringW->Call($lpstrCommand, $lpstrReturnString, $uReturnLength, $hwndCallback);
# lpstrCommand : LPCWSTR -> LPCWSTR
# lpstrReturnString : LPWSTR optional, out -> LPWSTR
# uReturnLength : DWORD -> DWORD
# hwndCallback : HWND optional -> HANDLE
# 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。