MFAllocateWorkQueueEx

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

HRESULT MFAllocateWorkQueueEx(
    MFASYNC_WORKQUEUE_TYPE WorkQueueType,
    DWORD* pdwWorkQueue
);

<DllImport("MFPlat.dll", ExactSpelling:=True)>
Public Shared Function MFAllocateWorkQueueEx(
    WorkQueueType As Integer,   ' MFASYNC_WORKQUEUE_TYPE
    <Out> ByRef pdwWorkQueue As UInteger   ' DWORD* out
) As Integer
End Function

' WorkQueueType : MFASYNC_WORKQUEUE_TYPE
' pdwWorkQueue : DWORD* out
Declare PtrSafe Function MFAllocateWorkQueueEx Lib "mfplat" ( _
    ByVal WorkQueueType As Long, _
    ByRef pdwWorkQueue 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

MFAllocateWorkQueueEx = ctypes.windll.mfplat.MFAllocateWorkQueueEx
MFAllocateWorkQueueEx.restype = ctypes.c_int
MFAllocateWorkQueueEx.argtypes = [
    ctypes.c_int,  # WorkQueueType : MFASYNC_WORKQUEUE_TYPE
    ctypes.POINTER(wintypes.DWORD),  # pdwWorkQueue : DWORD* out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('MFPlat.dll')
MFAllocateWorkQueueEx = Fiddle::Function.new(
  lib['MFAllocateWorkQueueEx'],
  [
    Fiddle::TYPE_INT,  # WorkQueueType : MFASYNC_WORKQUEUE_TYPE
    Fiddle::TYPE_VOIDP,  # pdwWorkQueue : DWORD* out
  ],
  Fiddle::TYPE_INT)

#[link(name = "mfplat")]
extern "system" {
    fn MFAllocateWorkQueueEx(
        WorkQueueType: i32,  // MFASYNC_WORKQUEUE_TYPE
        pdwWorkQueue: *mut u32  // DWORD* out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("MFPlat.dll")]
public static extern int MFAllocateWorkQueueEx(int WorkQueueType, out uint pdwWorkQueue);
"@
$api = Add-Type -MemberDefinition $sig -Name 'MFPlat_MFAllocateWorkQueueEx' -Namespace Win32 -PassThru
# $api::MFAllocateWorkQueueEx(WorkQueueType, pdwWorkQueue)

#uselib "MFPlat.dll"
#func global MFAllocateWorkQueueEx "MFAllocateWorkQueueEx" sptr, sptr
; MFAllocateWorkQueueEx WorkQueueType, varptr(pdwWorkQueue)   ; 戻り値は stat
; WorkQueueType : MFASYNC_WORKQUEUE_TYPE -> "sptr"
; pdwWorkQueue : DWORD* 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 MFAllocateWorkQueueEx "MFAllocateWorkQueueEx" int, var
; res = MFAllocateWorkQueueEx(WorkQueueType, pdwWorkQueue)
; WorkQueueType : MFASYNC_WORKQUEUE_TYPE -> "int"
; pdwWorkQueue : DWORD* out -> "var"
; ※出力/バッファ引数は var 方式(変数を直接渡す)。varptr 方式にも切替可。

; HRESULT MFAllocateWorkQueueEx(MFASYNC_WORKQUEUE_TYPE WorkQueueType, DWORD* pdwWorkQueue)
#uselib "MFPlat.dll"
#cfunc global MFAllocateWorkQueueEx "MFAllocateWorkQueueEx" int, var
; res = MFAllocateWorkQueueEx(WorkQueueType, pdwWorkQueue)
; WorkQueueType : MFASYNC_WORKQUEUE_TYPE -> "int"
; pdwWorkQueue : DWORD* out -> "var"
; ※出力/バッファ引数は var 方式(変数を直接渡す)。varptr 方式にも切替可。

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

var (
	mfplat = windows.NewLazySystemDLL("MFPlat.dll")
	procMFAllocateWorkQueueEx = mfplat.NewProc("MFAllocateWorkQueueEx")
)

// WorkQueueType (MFASYNC_WORKQUEUE_TYPE), pdwWorkQueue (DWORD* out)
r1, _, err := procMFAllocateWorkQueueEx.Call(
	uintptr(WorkQueueType),
	uintptr(pdwWorkQueue),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function MFAllocateWorkQueueEx(
  WorkQueueType: Integer;   // MFASYNC_WORKQUEUE_TYPE
  pdwWorkQueue: Pointer   // DWORD* out
): Integer; stdcall;
  external 'MFPlat.dll' name 'MFAllocateWorkQueueEx';

result := DllCall("MFPlat\MFAllocateWorkQueueEx"
    , "Int", WorkQueueType   ; MFASYNC_WORKQUEUE_TYPE
    , "Ptr", pdwWorkQueue   ; DWORD* out
    , "Int")   ; return: HRESULT

●MFAllocateWorkQueueEx(WorkQueueType, pdwWorkQueue) = DLL("MFPlat.dll", "int MFAllocateWorkQueueEx(int, void*)")
# 呼び出し: MFAllocateWorkQueueEx(WorkQueueType, pdwWorkQueue)
# WorkQueueType : MFASYNC_WORKQUEUE_TYPE -> "int"
# pdwWorkQueue : DWORD* 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)。