MFGetService

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

HRESULT MFGetService(
    IUnknown* punkObject,
    const GUID* guidService,
    const GUID* riid,
    void** ppvObject
);

<DllImport("MF.dll", ExactSpelling:=True)>
Public Shared Function MFGetService(
    punkObject As IntPtr,   ' IUnknown*
    ByRef guidService As Guid,   ' GUID*
    ByRef riid As Guid,   ' GUID*
    ppvObject As IntPtr   ' void** out
) As Integer
End Function

' punkObject : IUnknown*
' guidService : GUID*
' riid : GUID*
' ppvObject : void** out
Declare PtrSafe Function MFGetService Lib "mf" ( _
    ByVal punkObject As LongPtr, _
    ByVal guidService As LongPtr, _
    ByVal riid As LongPtr, _
    ByVal ppvObject 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

MFGetService = ctypes.windll.mf.MFGetService
MFGetService.restype = ctypes.c_int
MFGetService.argtypes = [
    ctypes.c_void_p,  # punkObject : IUnknown*
    ctypes.c_void_p,  # guidService : GUID*
    ctypes.c_void_p,  # riid : GUID*
    ctypes.c_void_p,  # ppvObject : void** out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('MF.dll')
MFGetService = Fiddle::Function.new(
  lib['MFGetService'],
  [
    Fiddle::TYPE_VOIDP,  # punkObject : IUnknown*
    Fiddle::TYPE_VOIDP,  # guidService : GUID*
    Fiddle::TYPE_VOIDP,  # riid : GUID*
    Fiddle::TYPE_VOIDP,  # ppvObject : void** out
  ],
  Fiddle::TYPE_INT)

#[link(name = "mf")]
extern "system" {
    fn MFGetService(
        punkObject: *mut core::ffi::c_void,  // IUnknown*
        guidService: *const GUID,  // GUID*
        riid: *const GUID,  // GUID*
        ppvObject: *mut *mut ()  // void** out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("MF.dll")]
public static extern int MFGetService(IntPtr punkObject, ref Guid guidService, ref Guid riid, IntPtr ppvObject);
"@
$api = Add-Type -MemberDefinition $sig -Name 'MF_MFGetService' -Namespace Win32 -PassThru
# $api::MFGetService(punkObject, guidService, riid, ppvObject)

#uselib "MF.dll"
#func global MFGetService "MFGetService" sptr, sptr, sptr, sptr
; MFGetService punkObject, varptr(guidService), varptr(riid), ppvObject   ; 戻り値は stat
; punkObject : IUnknown* -> "sptr"
; guidService : GUID* -> "sptr"
; riid : GUID* -> "sptr"
; ppvObject : void** 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。

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

var (
	mf = windows.NewLazySystemDLL("MF.dll")
	procMFGetService = mf.NewProc("MFGetService")
)

// punkObject (IUnknown*), guidService (GUID*), riid (GUID*), ppvObject (void** out)
r1, _, err := procMFGetService.Call(
	uintptr(punkObject),
	uintptr(guidService),
	uintptr(riid),
	uintptr(ppvObject),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function MFGetService(
  punkObject: Pointer;   // IUnknown*
  guidService: PGUID;   // GUID*
  riid: PGUID;   // GUID*
  ppvObject: Pointer   // void** out
): Integer; stdcall;
  external 'MF.dll' name 'MFGetService';

result := DllCall("MF\MFGetService"
    , "Ptr", punkObject   ; IUnknown*
    , "Ptr", guidService   ; GUID*
    , "Ptr", riid   ; GUID*
    , "Ptr", ppvObject   ; void** out
    , "Int")   ; return: HRESULT

●MFGetService(punkObject, guidService, riid, ppvObject) = DLL("MF.dll", "int MFGetService(void*, void*, void*, void*)")
# 呼び出し: MFGetService(punkObject, guidService, riid, ppvObject)
# punkObject : IUnknown* -> "void*"
# guidService : GUID* -> "void*"
# riid : GUID* -> "void*"
# ppvObject : void** 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 "mf" fn MFGetService(
    punkObject: ?*anyopaque, // IUnknown*
    guidService: [*c]GUID, // GUID*
    riid: [*c]GUID, // GUID*
    ppvObject: ?*anyopaque // void** out
) callconv(std.os.windows.WINAPI) i32;

proc MFGetService(
    punkObject: pointer,  # IUnknown*
    guidService: ptr GUID,  # GUID*
    riid: ptr GUID,  # GUID*
    ppvObject: pointer  # void** out
): int32 {.importc: "MFGetService", stdcall, dynlib: "MF.dll".}

pragma(lib, "mf");
extern(Windows)
int MFGetService(
    void* punkObject,   // IUnknown*
    GUID* guidService,   // GUID*
    GUID* riid,   // GUID*
    void** ppvObject   // void** out
);

ccall((:MFGetService, "MF.dll"), stdcall, Int32,
      (Ptr{Cvoid}, Ptr{GUID}, Ptr{GUID}, Ptr{Cvoid}),
      punkObject, guidService, riid, ppvObject)
# punkObject : IUnknown* -> Ptr{Cvoid}
# guidService : GUID* -> Ptr{GUID}
# riid : GUID* -> Ptr{GUID}
# ppvObject : void** 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 MFGetService(
    void* punkObject,
    void* guidService,
    void* riid,
    void** ppvObject);
]]
local mf = ffi.load("mf")
-- mf.MFGetService(punkObject, guidService, riid, ppvObject)
-- punkObject : IUnknown*
-- guidService : GUID*
-- riid : GUID*
-- ppvObject : void** 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('MF.dll');
const MFGetService = lib.func('__stdcall', 'MFGetService', 'int32_t', ['void *', 'void *', 'void *', 'void *']);
// MFGetService(punkObject, guidService, riid, ppvObject)
// punkObject : IUnknown* -> 'void *'
// guidService : GUID* -> 'void *'
// riid : GUID* -> 'void *'
// ppvObject : void** 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("MF.dll", {
  MFGetService: { parameters: ["pointer", "pointer", "pointer", "pointer"], result: "i32" },
});
// lib.symbols.MFGetService(punkObject, guidService, riid, ppvObject)
// punkObject : IUnknown* -> "pointer"
// guidService : GUID* -> "pointer"
// riid : GUID* -> "pointer"
// ppvObject : void** 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 MFGetService(
    void* punkObject,
    void* guidService,
    void* riid,
    void** ppvObject);
C, "MF.dll");
// $ffi->MFGetService(punkObject, guidService, riid, ppvObject);
// punkObject : IUnknown*
// guidService : GUID*
// riid : GUID*
// ppvObject : void** 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 Mf extends StdCallLibrary {
    Mf INSTANCE = Native.load("mf", Mf.class);
    int MFGetService(
        Pointer punkObject,   // IUnknown*
        Pointer guidService,   // GUID*
        Pointer riid,   // GUID*
        Pointer ppvObject   // void** out
    );
}

@[Link("mf")]
lib LibMF
  fun MFGetService = MFGetService(
    punkObject : Void*,   # IUnknown*
    guidService : GUID*,   # GUID*
    riid : GUID*,   # GUID*
    ppvObject : Void**   # void** 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 MFGetServiceNative = Int32 Function(Pointer<Void>, Pointer<Void>, Pointer<Void>, Pointer<Void>);
typedef MFGetServiceDart = int Function(Pointer<Void>, Pointer<Void>, Pointer<Void>, Pointer<Void>);
final MFGetService = DynamicLibrary.open('MF.dll')
    .lookupFunction<MFGetServiceNative, MFGetServiceDart>('MFGetService');
// punkObject : IUnknown* -> Pointer<Void>
// guidService : GUID* -> Pointer<Void>
// riid : GUID* -> Pointer<Void>
// ppvObject : void** out -> Pointer<Void>
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。

{$mode objfpc}{$H+}
function MFGetService(
  punkObject: Pointer;   // IUnknown*
  guidService: PGUID;   // GUID*
  riid: PGUID;   // GUID*
  ppvObject: Pointer   // void** out
): Integer; stdcall;
  external 'MF.dll' name 'MFGetService';

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

foreign import stdcall safe "MFGetService"
  c_MFGetService :: Ptr () -> Ptr () -> Ptr () -> Ptr () -> IO Int32
-- punkObject : IUnknown* -> Ptr ()
-- guidService : GUID* -> Ptr ()
-- riid : GUID* -> Ptr ()
-- ppvObject : void** 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 mfgetservice =
  foreign "MFGetService"
    ((ptr void) @-> (ptr void) @-> (ptr void) @-> (ptr void) @-> returning int32_t)
(* punkObject : IUnknown* -> (ptr void) *)
(* guidService : GUID* -> (ptr void) *)
(* riid : GUID* -> (ptr void) *)
(* ppvObject : void** 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 mf (t "MF.dll"))
(cffi:use-foreign-library mf)

(cffi:defcfun ("MFGetService" mfget-service :convention :stdcall) :int32
  (punk-object :pointer)   ; IUnknown*
  (guid-service :pointer)   ; GUID*
  (riid :pointer)   ; GUID*
  (ppv-object :pointer))   ; void** out
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。

use Win32::API;
my $MFGetService = Win32::API::More->new('MF',
    'int MFGetService(LPVOID punkObject, LPVOID guidService, LPVOID riid, LPVOID ppvObject)');
# my $ret = $MFGetService->Call($punkObject, $guidService, $riid, $ppvObject);
# punkObject : IUnknown* -> LPVOID
# guidService : GUID* -> LPVOID
# riid : GUID* -> LPVOID
# ppvObject : void** out -> LPVOID
# 値渡し構造体は pack() した文字列、または Win32::API::Struct を使用。