acmFilterEnumW

// MSACM32.dll  (Unicode / -W)
#include <windows.h>

DWORD acmFilterEnumW(
    HACMDRIVER had,
    ACMFILTERDETAILSW* pafd,
    ACMFILTERENUMCBW fnCallback,
    UINT_PTR dwInstance,
    DWORD fdwEnum
);

<DllImport("MSACM32.dll", CharSet:=CharSet.Unicode, ExactSpelling:=True)>
Public Shared Function acmFilterEnumW(
    had As IntPtr,   ' HACMDRIVER
    pafd As IntPtr,   ' ACMFILTERDETAILSW* in/out
    fnCallback As IntPtr,   ' ACMFILTERENUMCBW
    dwInstance As UIntPtr,   ' UINT_PTR
    fdwEnum As UInteger   ' DWORD
) As UInteger
End Function

' had : HACMDRIVER
' pafd : ACMFILTERDETAILSW* in/out
' fnCallback : ACMFILTERENUMCBW
' dwInstance : UINT_PTR
' fdwEnum : DWORD
Declare PtrSafe Function acmFilterEnumW Lib "msacm32" ( _
    ByVal had As LongPtr, _
    ByVal pafd As LongPtr, _
    ByVal fnCallback As LongPtr, _
    ByVal dwInstance As LongPtr, _
    ByVal fdwEnum As Long) As Long
' Unicode(W): 文字列は ByVal As LongPtr とし StrPtr(unicodeStr) を渡す
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

acmFilterEnumW = ctypes.windll.msacm32.acmFilterEnumW
acmFilterEnumW.restype = wintypes.DWORD
acmFilterEnumW.argtypes = [
    wintypes.HANDLE,  # had : HACMDRIVER
    ctypes.c_void_p,  # pafd : ACMFILTERDETAILSW* in/out
    ctypes.c_void_p,  # fnCallback : ACMFILTERENUMCBW
    ctypes.c_size_t,  # dwInstance : UINT_PTR
    wintypes.DWORD,  # fdwEnum : DWORD
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('MSACM32.dll')
acmFilterEnumW = Fiddle::Function.new(
  lib['acmFilterEnumW'],
  [
    Fiddle::TYPE_VOIDP,  # had : HACMDRIVER
    Fiddle::TYPE_VOIDP,  # pafd : ACMFILTERDETAILSW* in/out
    Fiddle::TYPE_VOIDP,  # fnCallback : ACMFILTERENUMCBW
    Fiddle::TYPE_UINTPTR_T,  # dwInstance : UINT_PTR
    -Fiddle::TYPE_INT,  # fdwEnum : DWORD
  ],
  -Fiddle::TYPE_INT)
# Wide strings: pass str.encode("UTF-16LE") + "\x00\x00"

#[link(name = "msacm32")]
extern "system" {
    fn acmFilterEnumW(
        had: *mut core::ffi::c_void,  // HACMDRIVER
        pafd: *mut ACMFILTERDETAILSW,  // ACMFILTERDETAILSW* in/out
        fnCallback: *const core::ffi::c_void,  // ACMFILTERENUMCBW
        dwInstance: usize,  // UINT_PTR
        fdwEnum: u32  // DWORD
    ) -> u32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("MSACM32.dll", CharSet = CharSet.Unicode)]
public static extern uint acmFilterEnumW(IntPtr had, IntPtr pafd, IntPtr fnCallback, UIntPtr dwInstance, uint fdwEnum);
"@
$api = Add-Type -MemberDefinition $sig -Name 'MSACM32_acmFilterEnumW' -Namespace Win32 -PassThru
# $api::acmFilterEnumW(had, pafd, fnCallback, dwInstance, fdwEnum)

#uselib "MSACM32.dll"
#func global acmFilterEnumW "acmFilterEnumW" wptr, wptr, wptr, wptr, wptr
; acmFilterEnumW had, varptr(pafd), fnCallback, dwInstance, fdwEnum   ; 戻り値は stat
; had : HACMDRIVER -> "wptr"
; pafd : ACMFILTERDETAILSW* in/out -> "wptr"
; fnCallback : ACMFILTERENUMCBW -> "wptr"
; dwInstance : UINT_PTR -> "wptr"
; fdwEnum : DWORD -> "wptr"
; ※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 "MSACM32.dll"
#cfunc global acmFilterEnumW "acmFilterEnumW" sptr, var, sptr, sptr, int
; res = acmFilterEnumW(had, pafd, fnCallback, dwInstance, fdwEnum)
; had : HACMDRIVER -> "sptr"
; pafd : ACMFILTERDETAILSW* in/out -> "var"
; fnCallback : ACMFILTERENUMCBW -> "sptr"
; dwInstance : UINT_PTR -> "sptr"
; fdwEnum : DWORD -> "int"
; ※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。

; DWORD acmFilterEnumW(HACMDRIVER had, ACMFILTERDETAILSW* pafd, ACMFILTERENUMCBW fnCallback, UINT_PTR dwInstance, DWORD fdwEnum)
#uselib "MSACM32.dll"
#cfunc global acmFilterEnumW "acmFilterEnumW" intptr, var, intptr, intptr, int
; res = acmFilterEnumW(had, pafd, fnCallback, dwInstance, fdwEnum)
; had : HACMDRIVER -> "intptr"
; pafd : ACMFILTERDETAILSW* in/out -> "var"
; fnCallback : ACMFILTERENUMCBW -> "intptr"
; dwInstance : UINT_PTR -> "intptr"
; fdwEnum : DWORD -> "int"
; ※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 (
	msacm32 = windows.NewLazySystemDLL("MSACM32.dll")
	procacmFilterEnumW = msacm32.NewProc("acmFilterEnumW")
)

// had (HACMDRIVER), pafd (ACMFILTERDETAILSW* in/out), fnCallback (ACMFILTERENUMCBW), dwInstance (UINT_PTR), fdwEnum (DWORD)
r1, _, err := procacmFilterEnumW.Call(
	uintptr(had),
	uintptr(pafd),
	uintptr(fnCallback),
	uintptr(dwInstance),
	uintptr(fdwEnum),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // DWORD

function acmFilterEnumW(
  had: THandle;   // HACMDRIVER
  pafd: Pointer;   // ACMFILTERDETAILSW* in/out
  fnCallback: Pointer;   // ACMFILTERENUMCBW
  dwInstance: NativeUInt;   // UINT_PTR
  fdwEnum: DWORD   // DWORD
): DWORD; stdcall;
  external 'MSACM32.dll' name 'acmFilterEnumW';

result := DllCall("MSACM32\acmFilterEnumW"
    , "Ptr", had   ; HACMDRIVER
    , "Ptr", pafd   ; ACMFILTERDETAILSW* in/out
    , "Ptr", fnCallback   ; ACMFILTERENUMCBW
    , "UPtr", dwInstance   ; UINT_PTR
    , "UInt", fdwEnum   ; DWORD
    , "UInt")   ; return: DWORD

●acmFilterEnumW(had, pafd, fnCallback, dwInstance, fdwEnum) = DLL("MSACM32.dll", "dword acmFilterEnumW(void*, void*, void*, int, dword)")
# 呼び出し: acmFilterEnumW(had, pafd, fnCallback, dwInstance, fdwEnum)
# had : HACMDRIVER -> "void*"
# pafd : ACMFILTERDETAILSW* in/out -> "void*"
# fnCallback : ACMFILTERENUMCBW -> "void*"
# dwInstance : UINT_PTR -> "int"
# fdwEnum : DWORD -> "dword"
# 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)。
# ※-W(Unicode)関数。なでしこ1はANSIのため -A 版の利用を推奨。