CoCreateFreeThreadedMarshaler

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

HRESULT CoCreateFreeThreadedMarshaler(
    IUnknown* punkOuter,   // optional
    IUnknown** ppunkMarshal
);

<DllImport("OLE32.dll", ExactSpelling:=True)>
Public Shared Function CoCreateFreeThreadedMarshaler(
    punkOuter As IntPtr,   ' IUnknown* optional
    ppunkMarshal As IntPtr   ' IUnknown** out
) As Integer
End Function

' punkOuter : IUnknown* optional
' ppunkMarshal : IUnknown** out
Declare PtrSafe Function CoCreateFreeThreadedMarshaler Lib "ole32" ( _
    ByVal punkOuter As LongPtr, _
    ByVal ppunkMarshal 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

CoCreateFreeThreadedMarshaler = ctypes.windll.ole32.CoCreateFreeThreadedMarshaler
CoCreateFreeThreadedMarshaler.restype = ctypes.c_int
CoCreateFreeThreadedMarshaler.argtypes = [
    ctypes.c_void_p,  # punkOuter : IUnknown* optional
    ctypes.c_void_p,  # ppunkMarshal : IUnknown** out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('OLE32.dll')
CoCreateFreeThreadedMarshaler = Fiddle::Function.new(
  lib['CoCreateFreeThreadedMarshaler'],
  [
    Fiddle::TYPE_VOIDP,  # punkOuter : IUnknown* optional
    Fiddle::TYPE_VOIDP,  # ppunkMarshal : IUnknown** out
  ],
  Fiddle::TYPE_INT)

#[link(name = "ole32")]
extern "system" {
    fn CoCreateFreeThreadedMarshaler(
        punkOuter: *mut core::ffi::c_void,  // IUnknown* optional
        ppunkMarshal: *mut *mut core::ffi::c_void  // IUnknown** out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("OLE32.dll")]
public static extern int CoCreateFreeThreadedMarshaler(IntPtr punkOuter, IntPtr ppunkMarshal);
"@
$api = Add-Type -MemberDefinition $sig -Name 'OLE32_CoCreateFreeThreadedMarshaler' -Namespace Win32 -PassThru
# $api::CoCreateFreeThreadedMarshaler(punkOuter, ppunkMarshal)

#uselib "OLE32.dll"
#func global CoCreateFreeThreadedMarshaler "CoCreateFreeThreadedMarshaler" sptr, sptr
; CoCreateFreeThreadedMarshaler punkOuter, ppunkMarshal   ; 戻り値は stat
; punkOuter : IUnknown* optional -> "sptr"
; ppunkMarshal : IUnknown** 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 "OLE32.dll"
#cfunc global CoCreateFreeThreadedMarshaler "CoCreateFreeThreadedMarshaler" sptr, sptr
; res = CoCreateFreeThreadedMarshaler(punkOuter, ppunkMarshal)
; punkOuter : IUnknown* optional -> "sptr"
; ppunkMarshal : IUnknown** out -> "sptr"

; HRESULT CoCreateFreeThreadedMarshaler(IUnknown* punkOuter, IUnknown** ppunkMarshal)
#uselib "OLE32.dll"
#cfunc global CoCreateFreeThreadedMarshaler "CoCreateFreeThreadedMarshaler" intptr, intptr
; res = CoCreateFreeThreadedMarshaler(punkOuter, ppunkMarshal)
; punkOuter : IUnknown* optional -> "intptr"
; ppunkMarshal : IUnknown** out -> "intptr"

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

var (
	ole32 = windows.NewLazySystemDLL("OLE32.dll")
	procCoCreateFreeThreadedMarshaler = ole32.NewProc("CoCreateFreeThreadedMarshaler")
)

// punkOuter (IUnknown* optional), ppunkMarshal (IUnknown** out)
r1, _, err := procCoCreateFreeThreadedMarshaler.Call(
	uintptr(punkOuter),
	uintptr(ppunkMarshal),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function CoCreateFreeThreadedMarshaler(
  punkOuter: Pointer;   // IUnknown* optional
  ppunkMarshal: Pointer   // IUnknown** out
): Integer; stdcall;
  external 'OLE32.dll' name 'CoCreateFreeThreadedMarshaler';

result := DllCall("OLE32\CoCreateFreeThreadedMarshaler"
    , "Ptr", punkOuter   ; IUnknown* optional
    , "Ptr", ppunkMarshal   ; IUnknown** out
    , "Int")   ; return: HRESULT

●CoCreateFreeThreadedMarshaler(punkOuter, ppunkMarshal) = DLL("OLE32.dll", "int CoCreateFreeThreadedMarshaler(void*, void*)")
# 呼び出し: CoCreateFreeThreadedMarshaler(punkOuter, ppunkMarshal)
# punkOuter : IUnknown* optional -> "void*"
# ppunkMarshal : IUnknown** 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)。