CoMarshalInterface

// OLE32.dll
#include <windows.h>

HRESULT CoMarshalInterface(
    IStream* pStm,
    const GUID* riid,
    IUnknown* pUnk,
    DWORD dwDestContext,
    void* pvDestContext,   // optional
    DWORD mshlflags
);

<DllImport("OLE32.dll", ExactSpelling:=True)>
Public Shared Function CoMarshalInterface(
    pStm As IntPtr,   ' IStream*
    ByRef riid As Guid,   ' GUID*
    pUnk As IntPtr,   ' IUnknown*
    dwDestContext As UInteger,   ' DWORD
    pvDestContext As IntPtr,   ' void* optional
    mshlflags As UInteger   ' DWORD
) As Integer
End Function

' pStm : IStream*
' riid : GUID*
' pUnk : IUnknown*
' dwDestContext : DWORD
' pvDestContext : void* optional
' mshlflags : DWORD
Declare PtrSafe Function CoMarshalInterface Lib "ole32" ( _
    ByVal pStm As LongPtr, _
    ByVal riid As LongPtr, _
    ByVal pUnk As LongPtr, _
    ByVal dwDestContext As Long, _
    ByVal pvDestContext As LongPtr, _
    ByVal mshlflags 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

CoMarshalInterface = ctypes.windll.ole32.CoMarshalInterface
CoMarshalInterface.restype = ctypes.c_int
CoMarshalInterface.argtypes = [
    ctypes.c_void_p,  # pStm : IStream*
    ctypes.c_void_p,  # riid : GUID*
    ctypes.c_void_p,  # pUnk : IUnknown*
    wintypes.DWORD,  # dwDestContext : DWORD
    ctypes.POINTER(None),  # pvDestContext : void* optional
    wintypes.DWORD,  # mshlflags : DWORD
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('OLE32.dll')
CoMarshalInterface = Fiddle::Function.new(
  lib['CoMarshalInterface'],
  [
    Fiddle::TYPE_VOIDP,  # pStm : IStream*
    Fiddle::TYPE_VOIDP,  # riid : GUID*
    Fiddle::TYPE_VOIDP,  # pUnk : IUnknown*
    -Fiddle::TYPE_INT,  # dwDestContext : DWORD
    Fiddle::TYPE_VOIDP,  # pvDestContext : void* optional
    -Fiddle::TYPE_INT,  # mshlflags : DWORD
  ],
  Fiddle::TYPE_INT)

#[link(name = "ole32")]
extern "system" {
    fn CoMarshalInterface(
        pStm: *mut core::ffi::c_void,  // IStream*
        riid: *const GUID,  // GUID*
        pUnk: *mut core::ffi::c_void,  // IUnknown*
        dwDestContext: u32,  // DWORD
        pvDestContext: *mut (),  // void* optional
        mshlflags: u32  // DWORD
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("OLE32.dll")]
public static extern int CoMarshalInterface(IntPtr pStm, ref Guid riid, IntPtr pUnk, uint dwDestContext, IntPtr pvDestContext, uint mshlflags);
"@
$api = Add-Type -MemberDefinition $sig -Name 'OLE32_CoMarshalInterface' -Namespace Win32 -PassThru
# $api::CoMarshalInterface(pStm, riid, pUnk, dwDestContext, pvDestContext, mshlflags)

#uselib "OLE32.dll"
#func global CoMarshalInterface "CoMarshalInterface" sptr, sptr, sptr, sptr, sptr, sptr
; CoMarshalInterface pStm, varptr(riid), pUnk, dwDestContext, pvDestContext, mshlflags   ; 戻り値は stat
; pStm : IStream* -> "sptr"
; riid : GUID* -> "sptr"
; pUnk : IUnknown* -> "sptr"
; dwDestContext : DWORD -> "sptr"
; pvDestContext : void* optional -> "sptr"
; mshlflags : 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 "OLE32.dll"
#cfunc global CoMarshalInterface "CoMarshalInterface" sptr, var, sptr, int, sptr, int
; res = CoMarshalInterface(pStm, riid, pUnk, dwDestContext, pvDestContext, mshlflags)
; pStm : IStream* -> "sptr"
; riid : GUID* -> "var"
; pUnk : IUnknown* -> "sptr"
; dwDestContext : DWORD -> "int"
; pvDestContext : void* optional -> "sptr"
; mshlflags : 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。

; HRESULT CoMarshalInterface(IStream* pStm, GUID* riid, IUnknown* pUnk, DWORD dwDestContext, void* pvDestContext, DWORD mshlflags)
#uselib "OLE32.dll"
#cfunc global CoMarshalInterface "CoMarshalInterface" intptr, var, intptr, int, intptr, int
; res = CoMarshalInterface(pStm, riid, pUnk, dwDestContext, pvDestContext, mshlflags)
; pStm : IStream* -> "intptr"
; riid : GUID* -> "var"
; pUnk : IUnknown* -> "intptr"
; dwDestContext : DWORD -> "int"
; pvDestContext : void* optional -> "intptr"
; mshlflags : 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 (
	ole32 = windows.NewLazySystemDLL("OLE32.dll")
	procCoMarshalInterface = ole32.NewProc("CoMarshalInterface")
)

// pStm (IStream*), riid (GUID*), pUnk (IUnknown*), dwDestContext (DWORD), pvDestContext (void* optional), mshlflags (DWORD)
r1, _, err := procCoMarshalInterface.Call(
	uintptr(pStm),
	uintptr(riid),
	uintptr(pUnk),
	uintptr(dwDestContext),
	uintptr(pvDestContext),
	uintptr(mshlflags),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function CoMarshalInterface(
  pStm: Pointer;   // IStream*
  riid: PGUID;   // GUID*
  pUnk: Pointer;   // IUnknown*
  dwDestContext: DWORD;   // DWORD
  pvDestContext: Pointer;   // void* optional
  mshlflags: DWORD   // DWORD
): Integer; stdcall;
  external 'OLE32.dll' name 'CoMarshalInterface';

result := DllCall("OLE32\CoMarshalInterface"
    , "Ptr", pStm   ; IStream*
    , "Ptr", riid   ; GUID*
    , "Ptr", pUnk   ; IUnknown*
    , "UInt", dwDestContext   ; DWORD
    , "Ptr", pvDestContext   ; void* optional
    , "UInt", mshlflags   ; DWORD
    , "Int")   ; return: HRESULT

●CoMarshalInterface(pStm, riid, pUnk, dwDestContext, pvDestContext, mshlflags) = DLL("OLE32.dll", "int CoMarshalInterface(void*, void*, void*, dword, void*, dword)")
# 呼び出し: CoMarshalInterface(pStm, riid, pUnk, dwDestContext, pvDestContext, mshlflags)
# pStm : IStream* -> "void*"
# riid : GUID* -> "void*"
# pUnk : IUnknown* -> "void*"
# dwDestContext : DWORD -> "dword"
# pvDestContext : void* optional -> "void*"
# mshlflags : 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)。