WMCreateWriter

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

HRESULT WMCreateWriter(
    IUnknown* pUnkCert,
    IWMWriter** ppWriter
);

<DllImport("WMVCore.dll", ExactSpelling:=True)>
Public Shared Function WMCreateWriter(
    pUnkCert As IntPtr,   ' IUnknown*
    ppWriter As IntPtr   ' IWMWriter** out
) As Integer
End Function

' pUnkCert : IUnknown*
' ppWriter : IWMWriter** out
Declare PtrSafe Function WMCreateWriter Lib "wmvcore" ( _
    ByVal pUnkCert As LongPtr, _
    ByVal ppWriter 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

WMCreateWriter = ctypes.windll.wmvcore.WMCreateWriter
WMCreateWriter.restype = ctypes.c_int
WMCreateWriter.argtypes = [
    ctypes.c_void_p,  # pUnkCert : IUnknown*
    ctypes.c_void_p,  # ppWriter : IWMWriter** out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('WMVCore.dll')
WMCreateWriter = Fiddle::Function.new(
  lib['WMCreateWriter'],
  [
    Fiddle::TYPE_VOIDP,  # pUnkCert : IUnknown*
    Fiddle::TYPE_VOIDP,  # ppWriter : IWMWriter** out
  ],
  Fiddle::TYPE_INT)

#[link(name = "wmvcore")]
extern "system" {
    fn WMCreateWriter(
        pUnkCert: *mut core::ffi::c_void,  // IUnknown*
        ppWriter: *mut *mut core::ffi::c_void  // IWMWriter** out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("WMVCore.dll")]
public static extern int WMCreateWriter(IntPtr pUnkCert, IntPtr ppWriter);
"@
$api = Add-Type -MemberDefinition $sig -Name 'WMVCore_WMCreateWriter' -Namespace Win32 -PassThru
# $api::WMCreateWriter(pUnkCert, ppWriter)

#uselib "WMVCore.dll"
#func global WMCreateWriter "WMCreateWriter" sptr, sptr
; WMCreateWriter pUnkCert, ppWriter   ; 戻り値は stat
; pUnkCert : IUnknown* -> "sptr"
; ppWriter : IWMWriter** 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 "WMVCore.dll"
#cfunc global WMCreateWriter "WMCreateWriter" sptr, sptr
; res = WMCreateWriter(pUnkCert, ppWriter)
; pUnkCert : IUnknown* -> "sptr"
; ppWriter : IWMWriter** out -> "sptr"

; HRESULT WMCreateWriter(IUnknown* pUnkCert, IWMWriter** ppWriter)
#uselib "WMVCore.dll"
#cfunc global WMCreateWriter "WMCreateWriter" intptr, intptr
; res = WMCreateWriter(pUnkCert, ppWriter)
; pUnkCert : IUnknown* -> "intptr"
; ppWriter : IWMWriter** out -> "intptr"

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

var (
	wmvcore = windows.NewLazySystemDLL("WMVCore.dll")
	procWMCreateWriter = wmvcore.NewProc("WMCreateWriter")
)

// pUnkCert (IUnknown*), ppWriter (IWMWriter** out)
r1, _, err := procWMCreateWriter.Call(
	uintptr(pUnkCert),
	uintptr(ppWriter),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function WMCreateWriter(
  pUnkCert: Pointer;   // IUnknown*
  ppWriter: Pointer   // IWMWriter** out
): Integer; stdcall;
  external 'WMVCore.dll' name 'WMCreateWriter';

result := DllCall("WMVCore\WMCreateWriter"
    , "Ptr", pUnkCert   ; IUnknown*
    , "Ptr", ppWriter   ; IWMWriter** out
    , "Int")   ; return: HRESULT

●WMCreateWriter(pUnkCert, ppWriter) = DLL("WMVCore.dll", "int WMCreateWriter(void*, void*)")
# 呼び出し: WMCreateWriter(pUnkCert, ppWriter)
# pUnkCert : IUnknown* -> "void*"
# ppWriter : IWMWriter** 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)。