MFEnumDeviceSources

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

HRESULT MFEnumDeviceSources(
    IMFAttributes* pAttributes,
    IMFActivate*** pppSourceActivate,
    DWORD* pcSourceActivate
);

<DllImport("MF.dll", ExactSpelling:=True)>
Public Shared Function MFEnumDeviceSources(
    pAttributes As IntPtr,   ' IMFAttributes*
    pppSourceActivate As IntPtr,   ' IMFActivate*** out
    <Out> ByRef pcSourceActivate As UInteger   ' DWORD* out
) As Integer
End Function

' pAttributes : IMFAttributes*
' pppSourceActivate : IMFActivate*** out
' pcSourceActivate : DWORD* out
Declare PtrSafe Function MFEnumDeviceSources Lib "mf" ( _
    ByVal pAttributes As LongPtr, _
    ByVal pppSourceActivate As LongPtr, _
    ByRef pcSourceActivate 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

MFEnumDeviceSources = ctypes.windll.mf.MFEnumDeviceSources
MFEnumDeviceSources.restype = ctypes.c_int
MFEnumDeviceSources.argtypes = [
    ctypes.c_void_p,  # pAttributes : IMFAttributes*
    ctypes.c_void_p,  # pppSourceActivate : IMFActivate*** out
    ctypes.POINTER(wintypes.DWORD),  # pcSourceActivate : DWORD* out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('MF.dll')
MFEnumDeviceSources = Fiddle::Function.new(
  lib['MFEnumDeviceSources'],
  [
    Fiddle::TYPE_VOIDP,  # pAttributes : IMFAttributes*
    Fiddle::TYPE_VOIDP,  # pppSourceActivate : IMFActivate*** out
    Fiddle::TYPE_VOIDP,  # pcSourceActivate : DWORD* out
  ],
  Fiddle::TYPE_INT)

#[link(name = "mf")]
extern "system" {
    fn MFEnumDeviceSources(
        pAttributes: *mut core::ffi::c_void,  // IMFAttributes*
        pppSourceActivate: *mut *mut *mut core::ffi::c_void,  // IMFActivate*** out
        pcSourceActivate: *mut u32  // DWORD* out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("MF.dll")]
public static extern int MFEnumDeviceSources(IntPtr pAttributes, IntPtr pppSourceActivate, out uint pcSourceActivate);
"@
$api = Add-Type -MemberDefinition $sig -Name 'MF_MFEnumDeviceSources' -Namespace Win32 -PassThru
# $api::MFEnumDeviceSources(pAttributes, pppSourceActivate, pcSourceActivate)

#uselib "MF.dll"
#func global MFEnumDeviceSources "MFEnumDeviceSources" sptr, sptr, sptr
; MFEnumDeviceSources pAttributes, pppSourceActivate, varptr(pcSourceActivate)   ; 戻り値は stat
; pAttributes : IMFAttributes* -> "sptr"
; pppSourceActivate : IMFActivate*** out -> "sptr"
; pcSourceActivate : 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 "MF.dll"
#cfunc global MFEnumDeviceSources "MFEnumDeviceSources" sptr, sptr, var
; res = MFEnumDeviceSources(pAttributes, pppSourceActivate, pcSourceActivate)
; pAttributes : IMFAttributes* -> "sptr"
; pppSourceActivate : IMFActivate*** out -> "sptr"
; pcSourceActivate : 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 MFEnumDeviceSources(IMFAttributes* pAttributes, IMFActivate*** pppSourceActivate, DWORD* pcSourceActivate)
#uselib "MF.dll"
#cfunc global MFEnumDeviceSources "MFEnumDeviceSources" intptr, intptr, var
; res = MFEnumDeviceSources(pAttributes, pppSourceActivate, pcSourceActivate)
; pAttributes : IMFAttributes* -> "intptr"
; pppSourceActivate : IMFActivate*** out -> "intptr"
; pcSourceActivate : 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 (
	mf = windows.NewLazySystemDLL("MF.dll")
	procMFEnumDeviceSources = mf.NewProc("MFEnumDeviceSources")
)

// pAttributes (IMFAttributes*), pppSourceActivate (IMFActivate*** out), pcSourceActivate (DWORD* out)
r1, _, err := procMFEnumDeviceSources.Call(
	uintptr(pAttributes),
	uintptr(pppSourceActivate),
	uintptr(pcSourceActivate),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function MFEnumDeviceSources(
  pAttributes: Pointer;   // IMFAttributes*
  pppSourceActivate: Pointer;   // IMFActivate*** out
  pcSourceActivate: Pointer   // DWORD* out
): Integer; stdcall;
  external 'MF.dll' name 'MFEnumDeviceSources';

result := DllCall("MF\MFEnumDeviceSources"
    , "Ptr", pAttributes   ; IMFAttributes*
    , "Ptr", pppSourceActivate   ; IMFActivate*** out
    , "Ptr", pcSourceActivate   ; DWORD* out
    , "Int")   ; return: HRESULT

●MFEnumDeviceSources(pAttributes, pppSourceActivate, pcSourceActivate) = DLL("MF.dll", "int MFEnumDeviceSources(void*, void*, void*)")
# 呼び出し: MFEnumDeviceSources(pAttributes, pppSourceActivate, pcSourceActivate)
# pAttributes : IMFAttributes* -> "void*"
# pppSourceActivate : IMFActivate*** out -> "void*"
# pcSourceActivate : 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)。