CoGetStandardMarshal

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

HRESULT CoGetStandardMarshal(
    const GUID* riid,
    IUnknown* pUnk,   // optional
    DWORD dwDestContext,
    void* pvDestContext,   // optional
    DWORD mshlflags,
    IMarshal** ppMarshal
);

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

' riid : GUID*
' pUnk : IUnknown* optional
' dwDestContext : DWORD
' pvDestContext : void* optional
' mshlflags : DWORD
' ppMarshal : IMarshal** out
Declare PtrSafe Function CoGetStandardMarshal Lib "ole32" ( _
    ByVal riid As LongPtr, _
    ByVal pUnk As LongPtr, _
    ByVal dwDestContext As Long, _
    ByVal pvDestContext As LongPtr, _
    ByVal mshlflags As Long, _
    ByVal ppMarshal 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

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

require 'fiddle'
require 'fiddle/import'

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

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

$sig = @"
[DllImport("OLE32.dll")]
public static extern int CoGetStandardMarshal(ref Guid riid, IntPtr pUnk, uint dwDestContext, IntPtr pvDestContext, uint mshlflags, IntPtr ppMarshal);
"@
$api = Add-Type -MemberDefinition $sig -Name 'OLE32_CoGetStandardMarshal' -Namespace Win32 -PassThru
# $api::CoGetStandardMarshal(riid, pUnk, dwDestContext, pvDestContext, mshlflags, ppMarshal)

#uselib "OLE32.dll"
#func global CoGetStandardMarshal "CoGetStandardMarshal" sptr, sptr, sptr, sptr, sptr, sptr
; CoGetStandardMarshal varptr(riid), pUnk, dwDestContext, pvDestContext, mshlflags, ppMarshal   ; 戻り値は stat
; riid : GUID* -> "sptr"
; pUnk : IUnknown* optional -> "sptr"
; dwDestContext : DWORD -> "sptr"
; pvDestContext : void* optional -> "sptr"
; mshlflags : DWORD -> "sptr"
; ppMarshal : IMarshal** 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 CoGetStandardMarshal "CoGetStandardMarshal" var, sptr, int, sptr, int, sptr
; res = CoGetStandardMarshal(riid, pUnk, dwDestContext, pvDestContext, mshlflags, ppMarshal)
; riid : GUID* -> "var"
; pUnk : IUnknown* optional -> "sptr"
; dwDestContext : DWORD -> "int"
; pvDestContext : void* optional -> "sptr"
; mshlflags : DWORD -> "int"
; ppMarshal : IMarshal** 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 CoGetStandardMarshal(GUID* riid, IUnknown* pUnk, DWORD dwDestContext, void* pvDestContext, DWORD mshlflags, IMarshal** ppMarshal)
#uselib "OLE32.dll"
#cfunc global CoGetStandardMarshal "CoGetStandardMarshal" var, intptr, int, intptr, int, intptr
; res = CoGetStandardMarshal(riid, pUnk, dwDestContext, pvDestContext, mshlflags, ppMarshal)
; riid : GUID* -> "var"
; pUnk : IUnknown* optional -> "intptr"
; dwDestContext : DWORD -> "int"
; pvDestContext : void* optional -> "intptr"
; mshlflags : DWORD -> "int"
; ppMarshal : IMarshal** 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 (
	ole32 = windows.NewLazySystemDLL("OLE32.dll")
	procCoGetStandardMarshal = ole32.NewProc("CoGetStandardMarshal")
)

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

function CoGetStandardMarshal(
  riid: PGUID;   // GUID*
  pUnk: Pointer;   // IUnknown* optional
  dwDestContext: DWORD;   // DWORD
  pvDestContext: Pointer;   // void* optional
  mshlflags: DWORD;   // DWORD
  ppMarshal: Pointer   // IMarshal** out
): Integer; stdcall;
  external 'OLE32.dll' name 'CoGetStandardMarshal';

result := DllCall("OLE32\CoGetStandardMarshal"
    , "Ptr", riid   ; GUID*
    , "Ptr", pUnk   ; IUnknown* optional
    , "UInt", dwDestContext   ; DWORD
    , "Ptr", pvDestContext   ; void* optional
    , "UInt", mshlflags   ; DWORD
    , "Ptr", ppMarshal   ; IMarshal** out
    , "Int")   ; return: HRESULT

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