MFCreateFile

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

HRESULT MFCreateFile(
    MF_FILE_ACCESSMODE AccessMode,
    MF_FILE_OPENMODE OpenMode,
    MF_FILE_FLAGS fFlags,
    LPCWSTR pwszFileURL,
    IMFByteStream** ppIByteStream
);

<DllImport("MFPlat.dll", ExactSpelling:=True)>
Public Shared Function MFCreateFile(
    AccessMode As Integer,   ' MF_FILE_ACCESSMODE
    OpenMode As Integer,   ' MF_FILE_OPENMODE
    fFlags As Integer,   ' MF_FILE_FLAGS
    <MarshalAs(UnmanagedType.LPWStr)> pwszFileURL As String,   ' LPCWSTR
    ppIByteStream As IntPtr   ' IMFByteStream** out
) As Integer
End Function

' AccessMode : MF_FILE_ACCESSMODE
' OpenMode : MF_FILE_OPENMODE
' fFlags : MF_FILE_FLAGS
' pwszFileURL : LPCWSTR
' ppIByteStream : IMFByteStream** out
Declare PtrSafe Function MFCreateFile Lib "mfplat" ( _
    ByVal AccessMode As Long, _
    ByVal OpenMode As Long, _
    ByVal fFlags As Long, _
    ByVal pwszFileURL As LongPtr, _
    ByVal ppIByteStream As LongPtr) As Long
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

MFCreateFile = ctypes.windll.mfplat.MFCreateFile
MFCreateFile.restype = ctypes.c_int
MFCreateFile.argtypes = [
    ctypes.c_int,  # AccessMode : MF_FILE_ACCESSMODE
    ctypes.c_int,  # OpenMode : MF_FILE_OPENMODE
    ctypes.c_int,  # fFlags : MF_FILE_FLAGS
    wintypes.LPCWSTR,  # pwszFileURL : LPCWSTR
    ctypes.c_void_p,  # ppIByteStream : IMFByteStream** out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('MFPlat.dll')
MFCreateFile = Fiddle::Function.new(
  lib['MFCreateFile'],
  [
    Fiddle::TYPE_INT,  # AccessMode : MF_FILE_ACCESSMODE
    Fiddle::TYPE_INT,  # OpenMode : MF_FILE_OPENMODE
    Fiddle::TYPE_INT,  # fFlags : MF_FILE_FLAGS
    Fiddle::TYPE_VOIDP,  # pwszFileURL : LPCWSTR
    Fiddle::TYPE_VOIDP,  # ppIByteStream : IMFByteStream** out
  ],
  Fiddle::TYPE_INT)

#[link(name = "mfplat")]
extern "system" {
    fn MFCreateFile(
        AccessMode: i32,  // MF_FILE_ACCESSMODE
        OpenMode: i32,  // MF_FILE_OPENMODE
        fFlags: i32,  // MF_FILE_FLAGS
        pwszFileURL: *const u16,  // LPCWSTR
        ppIByteStream: *mut *mut core::ffi::c_void  // IMFByteStream** out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("MFPlat.dll")]
public static extern int MFCreateFile(int AccessMode, int OpenMode, int fFlags, [MarshalAs(UnmanagedType.LPWStr)] string pwszFileURL, IntPtr ppIByteStream);
"@
$api = Add-Type -MemberDefinition $sig -Name 'MFPlat_MFCreateFile' -Namespace Win32 -PassThru
# $api::MFCreateFile(AccessMode, OpenMode, fFlags, pwszFileURL, ppIByteStream)

#uselib "MFPlat.dll"
#func global MFCreateFile "MFCreateFile" sptr, sptr, sptr, sptr, sptr
; MFCreateFile AccessMode, OpenMode, fFlags, pwszFileURL, ppIByteStream   ; 戻り値は stat
; AccessMode : MF_FILE_ACCESSMODE -> "sptr"
; OpenMode : MF_FILE_OPENMODE -> "sptr"
; fFlags : MF_FILE_FLAGS -> "sptr"
; pwszFileURL : LPCWSTR -> "sptr"
; ppIByteStream : IMFByteStream** out -> "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 "MFPlat.dll"
#cfunc global MFCreateFile "MFCreateFile" int, int, int, wstr, sptr
; res = MFCreateFile(AccessMode, OpenMode, fFlags, pwszFileURL, ppIByteStream)
; AccessMode : MF_FILE_ACCESSMODE -> "int"
; OpenMode : MF_FILE_OPENMODE -> "int"
; fFlags : MF_FILE_FLAGS -> "int"
; pwszFileURL : LPCWSTR -> "wstr"
; ppIByteStream : IMFByteStream** out -> "sptr"

; HRESULT MFCreateFile(MF_FILE_ACCESSMODE AccessMode, MF_FILE_OPENMODE OpenMode, MF_FILE_FLAGS fFlags, LPCWSTR pwszFileURL, IMFByteStream** ppIByteStream)
#uselib "MFPlat.dll"
#cfunc global MFCreateFile "MFCreateFile" int, int, int, wstr, intptr
; res = MFCreateFile(AccessMode, OpenMode, fFlags, pwszFileURL, ppIByteStream)
; AccessMode : MF_FILE_ACCESSMODE -> "int"
; OpenMode : MF_FILE_OPENMODE -> "int"
; fFlags : MF_FILE_FLAGS -> "int"
; pwszFileURL : LPCWSTR -> "wstr"
; ppIByteStream : IMFByteStream** out -> "intptr"

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

var (
	mfplat = windows.NewLazySystemDLL("MFPlat.dll")
	procMFCreateFile = mfplat.NewProc("MFCreateFile")
)

// AccessMode (MF_FILE_ACCESSMODE), OpenMode (MF_FILE_OPENMODE), fFlags (MF_FILE_FLAGS), pwszFileURL (LPCWSTR), ppIByteStream (IMFByteStream** out)
r1, _, err := procMFCreateFile.Call(
	uintptr(AccessMode),
	uintptr(OpenMode),
	uintptr(fFlags),
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(pwszFileURL))),
	uintptr(ppIByteStream),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function MFCreateFile(
  AccessMode: Integer;   // MF_FILE_ACCESSMODE
  OpenMode: Integer;   // MF_FILE_OPENMODE
  fFlags: Integer;   // MF_FILE_FLAGS
  pwszFileURL: PWideChar;   // LPCWSTR
  ppIByteStream: Pointer   // IMFByteStream** out
): Integer; stdcall;
  external 'MFPlat.dll' name 'MFCreateFile';

result := DllCall("MFPlat\MFCreateFile"
    , "Int", AccessMode   ; MF_FILE_ACCESSMODE
    , "Int", OpenMode   ; MF_FILE_OPENMODE
    , "Int", fFlags   ; MF_FILE_FLAGS
    , "WStr", pwszFileURL   ; LPCWSTR
    , "Ptr", ppIByteStream   ; IMFByteStream** out
    , "Int")   ; return: HRESULT

●MFCreateFile(AccessMode, OpenMode, fFlags, pwszFileURL, ppIByteStream) = DLL("MFPlat.dll", "int MFCreateFile(int, int, int, char*, void*)")
# 呼び出し: MFCreateFile(AccessMode, OpenMode, fFlags, pwszFileURL, ppIByteStream)
# AccessMode : MF_FILE_ACCESSMODE -> "int"
# OpenMode : MF_FILE_OPENMODE -> "int"
# fFlags : MF_FILE_FLAGS -> "int"
# pwszFileURL : LPCWSTR -> "char*"
# ppIByteStream : IMFByteStream** out -> "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 "mfplat" fn MFCreateFile(
    AccessMode: i32, // MF_FILE_ACCESSMODE
    OpenMode: i32, // MF_FILE_OPENMODE
    fFlags: i32, // MF_FILE_FLAGS
    pwszFileURL: [*c]const u16, // LPCWSTR
    ppIByteStream: ?*anyopaque // IMFByteStream** out
) callconv(std.os.windows.WINAPI) i32;

proc MFCreateFile(
    AccessMode: int32,  # MF_FILE_ACCESSMODE
    OpenMode: int32,  # MF_FILE_OPENMODE
    fFlags: int32,  # MF_FILE_FLAGS
    pwszFileURL: WideCString,  # LPCWSTR
    ppIByteStream: pointer  # IMFByteStream** out
): int32 {.importc: "MFCreateFile", stdcall, dynlib: "MFPlat.dll".}

pragma(lib, "mfplat");
extern(Windows)
int MFCreateFile(
    int AccessMode,   // MF_FILE_ACCESSMODE
    int OpenMode,   // MF_FILE_OPENMODE
    int fFlags,   // MF_FILE_FLAGS
    const(wchar)* pwszFileURL,   // LPCWSTR
    void* ppIByteStream   // IMFByteStream** out
);

ccall((:MFCreateFile, "MFPlat.dll"), stdcall, Int32,
      (Int32, Int32, Int32, Cwstring, Ptr{Cvoid}),
      AccessMode, OpenMode, fFlags, pwszFileURL, ppIByteStream)
# AccessMode : MF_FILE_ACCESSMODE -> Int32
# OpenMode : MF_FILE_OPENMODE -> Int32
# fFlags : MF_FILE_FLAGS -> Int32
# pwszFileURL : LPCWSTR -> Cwstring
# ppIByteStream : IMFByteStream** out -> Ptr{Cvoid}
# stdcall は 32bit のみ意味を持つ(x64 では無視)。

local ffi = require("ffi")
ffi.cdef[[
int32_t MFCreateFile(
    int32_t AccessMode,
    int32_t OpenMode,
    int32_t fFlags,
    const uint16_t* pwszFileURL,
    void* ppIByteStream);
]]
local mfplat = ffi.load("mfplat")
-- mfplat.MFCreateFile(AccessMode, OpenMode, fFlags, pwszFileURL, ppIByteStream)
-- AccessMode : MF_FILE_ACCESSMODE
-- OpenMode : MF_FILE_OPENMODE
-- fFlags : MF_FILE_FLAGS
-- pwszFileURL : LPCWSTR
-- ppIByteStream : IMFByteStream** out
-- 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('MFPlat.dll');
const MFCreateFile = lib.func('__stdcall', 'MFCreateFile', 'int32_t', ['int32_t', 'int32_t', 'int32_t', 'str16', 'void *']);
// MFCreateFile(AccessMode, OpenMode, fFlags, pwszFileURL, ppIByteStream)
// AccessMode : MF_FILE_ACCESSMODE -> 'int32_t'
// OpenMode : MF_FILE_OPENMODE -> 'int32_t'
// fFlags : MF_FILE_FLAGS -> 'int32_t'
// pwszFileURL : LPCWSTR -> 'str16'
// ppIByteStream : IMFByteStream** out -> '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("MFPlat.dll", {
  MFCreateFile: { parameters: ["i32", "i32", "i32", "buffer", "pointer"], result: "i32" },
});
// lib.symbols.MFCreateFile(AccessMode, OpenMode, fFlags, pwszFileURL, ppIByteStream)
// AccessMode : MF_FILE_ACCESSMODE -> "i32"
// OpenMode : MF_FILE_OPENMODE -> "i32"
// fFlags : MF_FILE_FLAGS -> "i32"
// pwszFileURL : LPCWSTR -> "buffer"
// ppIByteStream : IMFByteStream** out -> "pointer"
// 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 MFCreateFile(
    int32_t AccessMode,
    int32_t OpenMode,
    int32_t fFlags,
    const uint16_t* pwszFileURL,
    void* ppIByteStream);
C, "MFPlat.dll");
// $ffi->MFCreateFile(AccessMode, OpenMode, fFlags, pwszFileURL, ppIByteStream);
// AccessMode : MF_FILE_ACCESSMODE
// OpenMode : MF_FILE_OPENMODE
// fFlags : MF_FILE_FLAGS
// pwszFileURL : LPCWSTR
// ppIByteStream : IMFByteStream** out
// 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 Mfplat extends StdCallLibrary {
    Mfplat INSTANCE = Native.load("mfplat", Mfplat.class);
    int MFCreateFile(
        int AccessMode,   // MF_FILE_ACCESSMODE
        int OpenMode,   // MF_FILE_OPENMODE
        int fFlags,   // MF_FILE_FLAGS
        WString pwszFileURL,   // LPCWSTR
        Pointer ppIByteStream   // IMFByteStream** out
    );
}

@[Link("mfplat")]
lib LibMFPlat
  fun MFCreateFile = MFCreateFile(
    AccessMode : Int32,   # MF_FILE_ACCESSMODE
    OpenMode : Int32,   # MF_FILE_OPENMODE
    fFlags : Int32,   # MF_FILE_FLAGS
    pwszFileURL : UInt16*,   # LPCWSTR
    ppIByteStream : Void*   # IMFByteStream** out
  ) : 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 MFCreateFileNative = Int32 Function(Int32, Int32, Int32, Pointer<Utf16>, Pointer<Void>);
typedef MFCreateFileDart = int Function(int, int, int, Pointer<Utf16>, Pointer<Void>);
final MFCreateFile = DynamicLibrary.open('MFPlat.dll')
    .lookupFunction<MFCreateFileNative, MFCreateFileDart>('MFCreateFile');
// AccessMode : MF_FILE_ACCESSMODE -> Int32
// OpenMode : MF_FILE_OPENMODE -> Int32
// fFlags : MF_FILE_FLAGS -> Int32
// pwszFileURL : LPCWSTR -> Pointer<Utf16>
// ppIByteStream : IMFByteStream** out -> Pointer<Void>
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。

{$mode objfpc}{$H+}
function MFCreateFile(
  AccessMode: Integer;   // MF_FILE_ACCESSMODE
  OpenMode: Integer;   // MF_FILE_OPENMODE
  fFlags: Integer;   // MF_FILE_FLAGS
  pwszFileURL: PWideChar;   // LPCWSTR
  ppIByteStream: Pointer   // IMFByteStream** out
): Integer; stdcall;
  external 'MFPlat.dll' name 'MFCreateFile';

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

foreign import stdcall safe "MFCreateFile"
  c_MFCreateFile :: Int32 -> Int32 -> Int32 -> CWString -> Ptr () -> IO Int32
-- AccessMode : MF_FILE_ACCESSMODE -> Int32
-- OpenMode : MF_FILE_OPENMODE -> Int32
-- fFlags : MF_FILE_FLAGS -> Int32
-- pwszFileURL : LPCWSTR -> CWString
-- ppIByteStream : IMFByteStream** out -> 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 mfcreatefile =
  foreign "MFCreateFile"
    (int32_t @-> int32_t @-> int32_t @-> (ptr uint16_t) @-> (ptr void) @-> returning int32_t)
(* AccessMode : MF_FILE_ACCESSMODE -> int32_t *)
(* OpenMode : MF_FILE_OPENMODE -> int32_t *)
(* fFlags : MF_FILE_FLAGS -> int32_t *)
(* pwszFileURL : LPCWSTR -> (ptr uint16_t) *)
(* ppIByteStream : IMFByteStream** out -> (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 mfplat (t "MFPlat.dll"))
(cffi:use-foreign-library mfplat)

(cffi:defcfun ("MFCreateFile" mfcreate-file :convention :stdcall) :int32
  (access-mode :int32)   ; MF_FILE_ACCESSMODE
  (open-mode :int32)   ; MF_FILE_OPENMODE
  (f-flags :int32)   ; MF_FILE_FLAGS
  (pwsz-file-url (:string :encoding :utf-16le))   ; LPCWSTR
  (pp-ibyte-stream :pointer))   ; IMFByteStream** out
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。

use Win32::API;
my $MFCreateFile = Win32::API::More->new('MFPlat',
    'int MFCreateFile(int AccessMode, int OpenMode, int fFlags, LPCWSTR pwszFileURL, LPVOID ppIByteStream)');
# my $ret = $MFCreateFile->Call($AccessMode, $OpenMode, $fFlags, $pwszFileURL, $ppIByteStream);
# AccessMode : MF_FILE_ACCESSMODE -> int
# OpenMode : MF_FILE_OPENMODE -> int
# fFlags : MF_FILE_FLAGS -> int
# pwszFileURL : LPCWSTR -> LPCWSTR
# ppIByteStream : IMFByteStream** out -> LPVOID
# 値渡し構造体は pack() した文字列、または Win32::API::Struct を使用。