EditStreamCopy

// AVIFIL32.dll
#include <windows.h>

HRESULT EditStreamCopy(
    IAVIStream* pavi,
    INT* plStart,
    INT* plLength,
    IAVIStream** ppResult
);

<DllImport("AVIFIL32.dll", ExactSpelling:=True)>
Public Shared Function EditStreamCopy(
    pavi As IntPtr,   ' IAVIStream*
    ByRef plStart As Integer,   ' INT* in/out
    ByRef plLength As Integer,   ' INT* in/out
    ppResult As IntPtr   ' IAVIStream** out
) As Integer
End Function

' pavi : IAVIStream*
' plStart : INT* in/out
' plLength : INT* in/out
' ppResult : IAVIStream** out
Declare PtrSafe Function EditStreamCopy Lib "avifil32" ( _
    ByVal pavi As LongPtr, _
    ByRef plStart As Long, _
    ByRef plLength As Long, _
    ByVal ppResult 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

EditStreamCopy = ctypes.windll.avifil32.EditStreamCopy
EditStreamCopy.restype = ctypes.c_int
EditStreamCopy.argtypes = [
    ctypes.c_void_p,  # pavi : IAVIStream*
    ctypes.POINTER(ctypes.c_int),  # plStart : INT* in/out
    ctypes.POINTER(ctypes.c_int),  # plLength : INT* in/out
    ctypes.c_void_p,  # ppResult : IAVIStream** out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('AVIFIL32.dll')
EditStreamCopy = Fiddle::Function.new(
  lib['EditStreamCopy'],
  [
    Fiddle::TYPE_VOIDP,  # pavi : IAVIStream*
    Fiddle::TYPE_VOIDP,  # plStart : INT* in/out
    Fiddle::TYPE_VOIDP,  # plLength : INT* in/out
    Fiddle::TYPE_VOIDP,  # ppResult : IAVIStream** out
  ],
  Fiddle::TYPE_INT)

#[link(name = "avifil32")]
extern "system" {
    fn EditStreamCopy(
        pavi: *mut core::ffi::c_void,  // IAVIStream*
        plStart: *mut i32,  // INT* in/out
        plLength: *mut i32,  // INT* in/out
        ppResult: *mut *mut core::ffi::c_void  // IAVIStream** out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("AVIFIL32.dll")]
public static extern int EditStreamCopy(IntPtr pavi, ref int plStart, ref int plLength, IntPtr ppResult);
"@
$api = Add-Type -MemberDefinition $sig -Name 'AVIFIL32_EditStreamCopy' -Namespace Win32 -PassThru
# $api::EditStreamCopy(pavi, plStart, plLength, ppResult)

#uselib "AVIFIL32.dll"
#func global EditStreamCopy "EditStreamCopy" sptr, sptr, sptr, sptr
; EditStreamCopy pavi, varptr(plStart), varptr(plLength), ppResult   ; 戻り値は stat
; pavi : IAVIStream* -> "sptr"
; plStart : INT* in/out -> "sptr"
; plLength : INT* in/out -> "sptr"
; ppResult : IAVIStream** 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 "AVIFIL32.dll"
#cfunc global EditStreamCopy "EditStreamCopy" sptr, var, var, sptr
; res = EditStreamCopy(pavi, plStart, plLength, ppResult)
; pavi : IAVIStream* -> "sptr"
; plStart : INT* in/out -> "var"
; plLength : INT* in/out -> "var"
; ppResult : IAVIStream** out -> "sptr"
; ※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 EditStreamCopy(IAVIStream* pavi, INT* plStart, INT* plLength, IAVIStream** ppResult)
#uselib "AVIFIL32.dll"
#cfunc global EditStreamCopy "EditStreamCopy" intptr, var, var, intptr
; res = EditStreamCopy(pavi, plStart, plLength, ppResult)
; pavi : IAVIStream* -> "intptr"
; plStart : INT* in/out -> "var"
; plLength : INT* in/out -> "var"
; ppResult : IAVIStream** out -> "intptr"
; ※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 (
	avifil32 = windows.NewLazySystemDLL("AVIFIL32.dll")
	procEditStreamCopy = avifil32.NewProc("EditStreamCopy")
)

// pavi (IAVIStream*), plStart (INT* in/out), plLength (INT* in/out), ppResult (IAVIStream** out)
r1, _, err := procEditStreamCopy.Call(
	uintptr(pavi),
	uintptr(plStart),
	uintptr(plLength),
	uintptr(ppResult),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function EditStreamCopy(
  pavi: Pointer;   // IAVIStream*
  plStart: Pointer;   // INT* in/out
  plLength: Pointer;   // INT* in/out
  ppResult: Pointer   // IAVIStream** out
): Integer; stdcall;
  external 'AVIFIL32.dll' name 'EditStreamCopy';

result := DllCall("AVIFIL32\EditStreamCopy"
    , "Ptr", pavi   ; IAVIStream*
    , "Ptr", plStart   ; INT* in/out
    , "Ptr", plLength   ; INT* in/out
    , "Ptr", ppResult   ; IAVIStream** out
    , "Int")   ; return: HRESULT

●EditStreamCopy(pavi, plStart, plLength, ppResult) = DLL("AVIFIL32.dll", "int EditStreamCopy(void*, void*, void*, void*)")
# 呼び出し: EditStreamCopy(pavi, plStart, plLength, ppResult)
# pavi : IAVIStream* -> "void*"
# plStart : INT* in/out -> "void*"
# plLength : INT* in/out -> "void*"
# ppResult : IAVIStream** 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)。