MFPutWorkItem

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

HRESULT MFPutWorkItem(
    DWORD dwQueue,
    IMFAsyncCallback* pCallback,
    IUnknown* pState
);

<DllImport("MFPlat.dll", ExactSpelling:=True)>
Public Shared Function MFPutWorkItem(
    dwQueue As UInteger,   ' DWORD
    pCallback As IntPtr,   ' IMFAsyncCallback*
    pState As IntPtr   ' IUnknown*
) As Integer
End Function

' dwQueue : DWORD
' pCallback : IMFAsyncCallback*
' pState : IUnknown*
Declare PtrSafe Function MFPutWorkItem Lib "mfplat" ( _
    ByVal dwQueue As Long, _
    ByVal pCallback As LongPtr, _
    ByVal pState 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

MFPutWorkItem = ctypes.windll.mfplat.MFPutWorkItem
MFPutWorkItem.restype = ctypes.c_int
MFPutWorkItem.argtypes = [
    wintypes.DWORD,  # dwQueue : DWORD
    ctypes.c_void_p,  # pCallback : IMFAsyncCallback*
    ctypes.c_void_p,  # pState : IUnknown*
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('MFPlat.dll')
MFPutWorkItem = Fiddle::Function.new(
  lib['MFPutWorkItem'],
  [
    -Fiddle::TYPE_INT,  # dwQueue : DWORD
    Fiddle::TYPE_VOIDP,  # pCallback : IMFAsyncCallback*
    Fiddle::TYPE_VOIDP,  # pState : IUnknown*
  ],
  Fiddle::TYPE_INT)

#[link(name = "mfplat")]
extern "system" {
    fn MFPutWorkItem(
        dwQueue: u32,  // DWORD
        pCallback: *mut core::ffi::c_void,  // IMFAsyncCallback*
        pState: *mut core::ffi::c_void  // IUnknown*
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("MFPlat.dll")]
public static extern int MFPutWorkItem(uint dwQueue, IntPtr pCallback, IntPtr pState);
"@
$api = Add-Type -MemberDefinition $sig -Name 'MFPlat_MFPutWorkItem' -Namespace Win32 -PassThru
# $api::MFPutWorkItem(dwQueue, pCallback, pState)

#uselib "MFPlat.dll"
#func global MFPutWorkItem "MFPutWorkItem" sptr, sptr, sptr
; MFPutWorkItem dwQueue, pCallback, pState   ; 戻り値は stat
; dwQueue : DWORD -> "sptr"
; pCallback : IMFAsyncCallback* -> "sptr"
; pState : IUnknown* -> "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 MFPutWorkItem "MFPutWorkItem" int, sptr, sptr
; res = MFPutWorkItem(dwQueue, pCallback, pState)
; dwQueue : DWORD -> "int"
; pCallback : IMFAsyncCallback* -> "sptr"
; pState : IUnknown* -> "sptr"

; HRESULT MFPutWorkItem(DWORD dwQueue, IMFAsyncCallback* pCallback, IUnknown* pState)
#uselib "MFPlat.dll"
#cfunc global MFPutWorkItem "MFPutWorkItem" int, intptr, intptr
; res = MFPutWorkItem(dwQueue, pCallback, pState)
; dwQueue : DWORD -> "int"
; pCallback : IMFAsyncCallback* -> "intptr"
; pState : IUnknown* -> "intptr"

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

var (
	mfplat = windows.NewLazySystemDLL("MFPlat.dll")
	procMFPutWorkItem = mfplat.NewProc("MFPutWorkItem")
)

// dwQueue (DWORD), pCallback (IMFAsyncCallback*), pState (IUnknown*)
r1, _, err := procMFPutWorkItem.Call(
	uintptr(dwQueue),
	uintptr(pCallback),
	uintptr(pState),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function MFPutWorkItem(
  dwQueue: DWORD;   // DWORD
  pCallback: Pointer;   // IMFAsyncCallback*
  pState: Pointer   // IUnknown*
): Integer; stdcall;
  external 'MFPlat.dll' name 'MFPutWorkItem';

result := DllCall("MFPlat\MFPutWorkItem"
    , "UInt", dwQueue   ; DWORD
    , "Ptr", pCallback   ; IMFAsyncCallback*
    , "Ptr", pState   ; IUnknown*
    , "Int")   ; return: HRESULT

●MFPutWorkItem(dwQueue, pCallback, pState) = DLL("MFPlat.dll", "int MFPutWorkItem(dword, void*, void*)")
# 呼び出し: MFPutWorkItem(dwQueue, pCallback, pState)
# dwQueue : DWORD -> "dword"
# pCallback : IMFAsyncCallback* -> "void*"
# pState : IUnknown* -> "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 MFPutWorkItem(
    dwQueue: u32, // DWORD
    pCallback: ?*anyopaque, // IMFAsyncCallback*
    pState: ?*anyopaque // IUnknown*
) callconv(std.os.windows.WINAPI) i32;

proc MFPutWorkItem(
    dwQueue: uint32,  # DWORD
    pCallback: pointer,  # IMFAsyncCallback*
    pState: pointer  # IUnknown*
): int32 {.importc: "MFPutWorkItem", stdcall, dynlib: "MFPlat.dll".}

pragma(lib, "mfplat");
extern(Windows)
int MFPutWorkItem(
    uint dwQueue,   // DWORD
    void* pCallback,   // IMFAsyncCallback*
    void* pState   // IUnknown*
);

ccall((:MFPutWorkItem, "MFPlat.dll"), stdcall, Int32,
      (UInt32, Ptr{Cvoid}, Ptr{Cvoid}),
      dwQueue, pCallback, pState)
# dwQueue : DWORD -> UInt32
# pCallback : IMFAsyncCallback* -> Ptr{Cvoid}
# pState : IUnknown* -> 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 MFPutWorkItem(
    uint32_t dwQueue,
    void* pCallback,
    void* pState);
]]
local mfplat = ffi.load("mfplat")
-- mfplat.MFPutWorkItem(dwQueue, pCallback, pState)
-- dwQueue : DWORD
-- pCallback : IMFAsyncCallback*
-- pState : IUnknown*
-- 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 MFPutWorkItem = lib.func('__stdcall', 'MFPutWorkItem', 'int32_t', ['uint32_t', 'void *', 'void *']);
// MFPutWorkItem(dwQueue, pCallback, pState)
// dwQueue : DWORD -> 'uint32_t'
// pCallback : IMFAsyncCallback* -> 'void *'
// pState : IUnknown* -> '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", {
  MFPutWorkItem: { parameters: ["u32", "pointer", "pointer"], result: "i32" },
});
// lib.symbols.MFPutWorkItem(dwQueue, pCallback, pState)
// dwQueue : DWORD -> "u32"
// pCallback : IMFAsyncCallback* -> "pointer"
// pState : IUnknown* -> "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 MFPutWorkItem(
    uint32_t dwQueue,
    void* pCallback,
    void* pState);
C, "MFPlat.dll");
// $ffi->MFPutWorkItem(dwQueue, pCallback, pState);
// dwQueue : DWORD
// pCallback : IMFAsyncCallback*
// pState : IUnknown*
// 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 MFPutWorkItem(
        int dwQueue,   // DWORD
        Pointer pCallback,   // IMFAsyncCallback*
        Pointer pState   // IUnknown*
    );
}

@[Link("mfplat")]
lib LibMFPlat
  fun MFPutWorkItem = MFPutWorkItem(
    dwQueue : UInt32,   # DWORD
    pCallback : Void*,   # IMFAsyncCallback*
    pState : Void*   # IUnknown*
  ) : 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 MFPutWorkItemNative = Int32 Function(Uint32, Pointer<Void>, Pointer<Void>);
typedef MFPutWorkItemDart = int Function(int, Pointer<Void>, Pointer<Void>);
final MFPutWorkItem = DynamicLibrary.open('MFPlat.dll')
    .lookupFunction<MFPutWorkItemNative, MFPutWorkItemDart>('MFPutWorkItem');
// dwQueue : DWORD -> Uint32
// pCallback : IMFAsyncCallback* -> Pointer<Void>
// pState : IUnknown* -> Pointer<Void>
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。

{$mode objfpc}{$H+}
function MFPutWorkItem(
  dwQueue: DWORD;   // DWORD
  pCallback: Pointer;   // IMFAsyncCallback*
  pState: Pointer   // IUnknown*
): Integer; stdcall;
  external 'MFPlat.dll' name 'MFPutWorkItem';

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

foreign import stdcall safe "MFPutWorkItem"
  c_MFPutWorkItem :: Word32 -> Ptr () -> Ptr () -> IO Int32
-- dwQueue : DWORD -> Word32
-- pCallback : IMFAsyncCallback* -> Ptr ()
-- pState : IUnknown* -> 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 mfputworkitem =
  foreign "MFPutWorkItem"
    (uint32_t @-> (ptr void) @-> (ptr void) @-> returning int32_t)
(* dwQueue : DWORD -> uint32_t *)
(* pCallback : IMFAsyncCallback* -> (ptr void) *)
(* pState : IUnknown* -> (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 ("MFPutWorkItem" mfput-work-item :convention :stdcall) :int32
  (dw-queue :uint32)   ; DWORD
  (p-callback :pointer)   ; IMFAsyncCallback*
  (p-state :pointer))   ; IUnknown*
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。

use Win32::API;
my $MFPutWorkItem = Win32::API::More->new('MFPlat',
    'int MFPutWorkItem(DWORD dwQueue, LPVOID pCallback, LPVOID pState)');
# my $ret = $MFPutWorkItem->Call($dwQueue, $pCallback, $pState);
# dwQueue : DWORD -> DWORD
# pCallback : IMFAsyncCallback* -> LPVOID
# pState : IUnknown* -> LPVOID
# 値渡し構造体は pack() した文字列、または Win32::API::Struct を使用。