acmStreamConvert

// MSACM32.dll
#include <windows.h>

DWORD acmStreamConvert(
    HACMSTREAM has,
    ACMSTREAMHEADER* pash,
    DWORD fdwConvert
);

<DllImport("MSACM32.dll", ExactSpelling:=True)>
Public Shared Function acmStreamConvert(
    has As IntPtr,   ' HACMSTREAM
    pash As IntPtr,   ' ACMSTREAMHEADER* in/out
    fdwConvert As UInteger   ' DWORD
) As UInteger
End Function

' has : HACMSTREAM
' pash : ACMSTREAMHEADER* in/out
' fdwConvert : DWORD
Declare PtrSafe Function acmStreamConvert Lib "msacm32" ( _
    ByVal has As LongPtr, _
    ByVal pash As LongPtr, _
    ByVal fdwConvert 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

acmStreamConvert = ctypes.windll.msacm32.acmStreamConvert
acmStreamConvert.restype = wintypes.DWORD
acmStreamConvert.argtypes = [
    wintypes.HANDLE,  # has : HACMSTREAM
    ctypes.c_void_p,  # pash : ACMSTREAMHEADER* in/out
    wintypes.DWORD,  # fdwConvert : DWORD
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('MSACM32.dll')
acmStreamConvert = Fiddle::Function.new(
  lib['acmStreamConvert'],
  [
    Fiddle::TYPE_VOIDP,  # has : HACMSTREAM
    Fiddle::TYPE_VOIDP,  # pash : ACMSTREAMHEADER* in/out
    -Fiddle::TYPE_INT,  # fdwConvert : DWORD
  ],
  -Fiddle::TYPE_INT)

#[link(name = "msacm32")]
extern "system" {
    fn acmStreamConvert(
        has: *mut core::ffi::c_void,  // HACMSTREAM
        pash: *mut ACMSTREAMHEADER,  // ACMSTREAMHEADER* in/out
        fdwConvert: u32  // DWORD
    ) -> u32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("MSACM32.dll")]
public static extern uint acmStreamConvert(IntPtr has, IntPtr pash, uint fdwConvert);
"@
$api = Add-Type -MemberDefinition $sig -Name 'MSACM32_acmStreamConvert' -Namespace Win32 -PassThru
# $api::acmStreamConvert(has, pash, fdwConvert)

#uselib "MSACM32.dll"
#func global acmStreamConvert "acmStreamConvert" sptr, sptr, sptr
; acmStreamConvert has, varptr(pash), fdwConvert   ; 戻り値は stat
; has : HACMSTREAM -> "sptr"
; pash : ACMSTREAMHEADER* in/out -> "sptr"
; fdwConvert : DWORD -> "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 "MSACM32.dll"
#cfunc global acmStreamConvert "acmStreamConvert" sptr, var, int
; res = acmStreamConvert(has, pash, fdwConvert)
; has : HACMSTREAM -> "sptr"
; pash : ACMSTREAMHEADER* in/out -> "var"
; fdwConvert : 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 acmStreamConvert(HACMSTREAM has, ACMSTREAMHEADER* pash, DWORD fdwConvert)
#uselib "MSACM32.dll"
#cfunc global acmStreamConvert "acmStreamConvert" intptr, var, int
; res = acmStreamConvert(has, pash, fdwConvert)
; has : HACMSTREAM -> "intptr"
; pash : ACMSTREAMHEADER* in/out -> "var"
; fdwConvert : 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")
	procacmStreamConvert = msacm32.NewProc("acmStreamConvert")
)

// has (HACMSTREAM), pash (ACMSTREAMHEADER* in/out), fdwConvert (DWORD)
r1, _, err := procacmStreamConvert.Call(
	uintptr(has),
	uintptr(pash),
	uintptr(fdwConvert),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // DWORD

function acmStreamConvert(
  has: THandle;   // HACMSTREAM
  pash: Pointer;   // ACMSTREAMHEADER* in/out
  fdwConvert: DWORD   // DWORD
): DWORD; stdcall;
  external 'MSACM32.dll' name 'acmStreamConvert';

result := DllCall("MSACM32\acmStreamConvert"
    , "Ptr", has   ; HACMSTREAM
    , "Ptr", pash   ; ACMSTREAMHEADER* in/out
    , "UInt", fdwConvert   ; DWORD
    , "UInt")   ; return: DWORD

●acmStreamConvert(has, pash, fdwConvert) = DLL("MSACM32.dll", "dword acmStreamConvert(void*, void*, dword)")
# 呼び出し: acmStreamConvert(has, pash, fdwConvert)
# has : HACMSTREAM -> "void*"
# pash : ACMSTREAMHEADER* in/out -> "void*"
# fdwConvert : 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)。