CreateStdAccessibleProxyW

// OLEACC.dll  (Unicode / -W)
#include <windows.h>

HRESULT CreateStdAccessibleProxyW(
    HWND hwnd,
    LPCWSTR pClassName,
    INT idObject,
    const GUID* riid,
    void** ppvObject
);

<DllImport("OLEACC.dll", CharSet:=CharSet.Unicode, ExactSpelling:=True)>
Public Shared Function CreateStdAccessibleProxyW(
    hwnd As IntPtr,   ' HWND
    <MarshalAs(UnmanagedType.LPWStr)> pClassName As String,   ' LPCWSTR
    idObject As Integer,   ' INT
    ByRef riid As Guid,   ' GUID*
    ppvObject As IntPtr   ' void** out
) As Integer
End Function

' hwnd : HWND
' pClassName : LPCWSTR
' idObject : INT
' riid : GUID*
' ppvObject : void** out
Declare PtrSafe Function CreateStdAccessibleProxyW Lib "oleacc" ( _
    ByVal hwnd As LongPtr, _
    ByVal pClassName As LongPtr, _
    ByVal idObject As Long, _
    ByVal riid As LongPtr, _
    ByVal ppvObject As LongPtr) As Long
' Unicode(W): 文字列は ByVal As LongPtr とし StrPtr(unicodeStr) を渡す
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

CreateStdAccessibleProxyW = ctypes.windll.oleacc.CreateStdAccessibleProxyW
CreateStdAccessibleProxyW.restype = ctypes.c_int
CreateStdAccessibleProxyW.argtypes = [
    wintypes.HANDLE,  # hwnd : HWND
    wintypes.LPCWSTR,  # pClassName : LPCWSTR
    ctypes.c_int,  # idObject : INT
    ctypes.c_void_p,  # riid : GUID*
    ctypes.c_void_p,  # ppvObject : void** out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('OLEACC.dll')
CreateStdAccessibleProxyW = Fiddle::Function.new(
  lib['CreateStdAccessibleProxyW'],
  [
    Fiddle::TYPE_VOIDP,  # hwnd : HWND
    Fiddle::TYPE_VOIDP,  # pClassName : LPCWSTR
    Fiddle::TYPE_INT,  # idObject : INT
    Fiddle::TYPE_VOIDP,  # riid : GUID*
    Fiddle::TYPE_VOIDP,  # ppvObject : void** out
  ],
  Fiddle::TYPE_INT)
# Wide strings: pass str.encode("UTF-16LE") + "\x00\x00"

#[link(name = "oleacc")]
extern "system" {
    fn CreateStdAccessibleProxyW(
        hwnd: *mut core::ffi::c_void,  // HWND
        pClassName: *const u16,  // LPCWSTR
        idObject: i32,  // INT
        riid: *const GUID,  // GUID*
        ppvObject: *mut *mut ()  // void** out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("OLEACC.dll", CharSet = CharSet.Unicode)]
public static extern int CreateStdAccessibleProxyW(IntPtr hwnd, [MarshalAs(UnmanagedType.LPWStr)] string pClassName, int idObject, ref Guid riid, IntPtr ppvObject);
"@
$api = Add-Type -MemberDefinition $sig -Name 'OLEACC_CreateStdAccessibleProxyW' -Namespace Win32 -PassThru
# $api::CreateStdAccessibleProxyW(hwnd, pClassName, idObject, riid, ppvObject)

#uselib "OLEACC.dll"
#func global CreateStdAccessibleProxyW "CreateStdAccessibleProxyW" wptr, wptr, wptr, wptr, wptr
; CreateStdAccessibleProxyW hwnd, pClassName, idObject, varptr(riid), ppvObject   ; 戻り値は stat
; hwnd : HWND -> "wptr"
; pClassName : LPCWSTR -> "wptr"
; idObject : INT -> "wptr"
; riid : GUID* -> "wptr"
; ppvObject : void** out -> "wptr"
; ※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 "OLEACC.dll"
#cfunc global CreateStdAccessibleProxyW "CreateStdAccessibleProxyW" sptr, wstr, int, var, sptr
; res = CreateStdAccessibleProxyW(hwnd, pClassName, idObject, riid, ppvObject)
; hwnd : HWND -> "sptr"
; pClassName : LPCWSTR -> "wstr"
; idObject : INT -> "int"
; riid : GUID* -> "var"
; ppvObject : void** 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 CreateStdAccessibleProxyW(HWND hwnd, LPCWSTR pClassName, INT idObject, GUID* riid, void** ppvObject)
#uselib "OLEACC.dll"
#cfunc global CreateStdAccessibleProxyW "CreateStdAccessibleProxyW" intptr, wstr, int, var, intptr
; res = CreateStdAccessibleProxyW(hwnd, pClassName, idObject, riid, ppvObject)
; hwnd : HWND -> "intptr"
; pClassName : LPCWSTR -> "wstr"
; idObject : INT -> "int"
; riid : GUID* -> "var"
; ppvObject : void** 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 (
	oleacc = windows.NewLazySystemDLL("OLEACC.dll")
	procCreateStdAccessibleProxyW = oleacc.NewProc("CreateStdAccessibleProxyW")
)

// hwnd (HWND), pClassName (LPCWSTR), idObject (INT), riid (GUID*), ppvObject (void** out)
r1, _, err := procCreateStdAccessibleProxyW.Call(
	uintptr(hwnd),
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(pClassName))),
	uintptr(idObject),
	uintptr(riid),
	uintptr(ppvObject),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function CreateStdAccessibleProxyW(
  hwnd: THandle;   // HWND
  pClassName: PWideChar;   // LPCWSTR
  idObject: Integer;   // INT
  riid: PGUID;   // GUID*
  ppvObject: Pointer   // void** out
): Integer; stdcall;
  external 'OLEACC.dll' name 'CreateStdAccessibleProxyW';

result := DllCall("OLEACC\CreateStdAccessibleProxyW"
    , "Ptr", hwnd   ; HWND
    , "WStr", pClassName   ; LPCWSTR
    , "Int", idObject   ; INT
    , "Ptr", riid   ; GUID*
    , "Ptr", ppvObject   ; void** out
    , "Int")   ; return: HRESULT

●CreateStdAccessibleProxyW(hwnd, pClassName, idObject, riid, ppvObject) = DLL("OLEACC.dll", "int CreateStdAccessibleProxyW(void*, char*, int, void*, void*)")
# 呼び出し: CreateStdAccessibleProxyW(hwnd, pClassName, idObject, riid, ppvObject)
# hwnd : HWND -> "void*"
# pClassName : LPCWSTR -> "char*"
# idObject : INT -> "int"
# riid : GUID* -> "void*"
# ppvObject : void** 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)。
# ※-W(Unicode)関数。なでしこ1はANSIのため -A 版の利用を推奨。