SafeArrayPtrOfIndex

// OLEAUT32.dll
#include <windows.h>

HRESULT SafeArrayPtrOfIndex(
    SAFEARRAY* psa,
    INT* rgIndices,
    void** ppvData
);

<DllImport("OLEAUT32.dll", ExactSpelling:=True)>
Public Shared Function SafeArrayPtrOfIndex(
    psa As IntPtr,   ' SAFEARRAY*
    ByRef rgIndices As Integer,   ' INT*
    ppvData As IntPtr   ' void** out
) As Integer
End Function

' psa : SAFEARRAY*
' rgIndices : INT*
' ppvData : void** out
Declare PtrSafe Function SafeArrayPtrOfIndex Lib "oleaut32" ( _
    ByVal psa As LongPtr, _
    ByRef rgIndices As Long, _
    ByVal ppvData 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

SafeArrayPtrOfIndex = ctypes.windll.oleaut32.SafeArrayPtrOfIndex
SafeArrayPtrOfIndex.restype = ctypes.c_int
SafeArrayPtrOfIndex.argtypes = [
    ctypes.c_void_p,  # psa : SAFEARRAY*
    ctypes.POINTER(ctypes.c_int),  # rgIndices : INT*
    ctypes.c_void_p,  # ppvData : void** out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('OLEAUT32.dll')
SafeArrayPtrOfIndex = Fiddle::Function.new(
  lib['SafeArrayPtrOfIndex'],
  [
    Fiddle::TYPE_VOIDP,  # psa : SAFEARRAY*
    Fiddle::TYPE_VOIDP,  # rgIndices : INT*
    Fiddle::TYPE_VOIDP,  # ppvData : void** out
  ],
  Fiddle::TYPE_INT)

#[link(name = "oleaut32")]
extern "system" {
    fn SafeArrayPtrOfIndex(
        psa: *mut SAFEARRAY,  // SAFEARRAY*
        rgIndices: *mut i32,  // INT*
        ppvData: *mut *mut ()  // void** out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("OLEAUT32.dll")]
public static extern int SafeArrayPtrOfIndex(IntPtr psa, ref int rgIndices, IntPtr ppvData);
"@
$api = Add-Type -MemberDefinition $sig -Name 'OLEAUT32_SafeArrayPtrOfIndex' -Namespace Win32 -PassThru
# $api::SafeArrayPtrOfIndex(psa, rgIndices, ppvData)

#uselib "OLEAUT32.dll"
#func global SafeArrayPtrOfIndex "SafeArrayPtrOfIndex" sptr, sptr, sptr
; SafeArrayPtrOfIndex varptr(psa), varptr(rgIndices), ppvData   ; 戻り値は stat
; psa : SAFEARRAY* -> "sptr"
; rgIndices : INT* -> "sptr"
; ppvData : void** 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 "OLEAUT32.dll"
#cfunc global SafeArrayPtrOfIndex "SafeArrayPtrOfIndex" var, var, sptr
; res = SafeArrayPtrOfIndex(psa, rgIndices, ppvData)
; psa : SAFEARRAY* -> "var"
; rgIndices : INT* -> "var"
; ppvData : 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 SafeArrayPtrOfIndex(SAFEARRAY* psa, INT* rgIndices, void** ppvData)
#uselib "OLEAUT32.dll"
#cfunc global SafeArrayPtrOfIndex "SafeArrayPtrOfIndex" var, var, intptr
; res = SafeArrayPtrOfIndex(psa, rgIndices, ppvData)
; psa : SAFEARRAY* -> "var"
; rgIndices : INT* -> "var"
; ppvData : 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 (
	oleaut32 = windows.NewLazySystemDLL("OLEAUT32.dll")
	procSafeArrayPtrOfIndex = oleaut32.NewProc("SafeArrayPtrOfIndex")
)

// psa (SAFEARRAY*), rgIndices (INT*), ppvData (void** out)
r1, _, err := procSafeArrayPtrOfIndex.Call(
	uintptr(psa),
	uintptr(rgIndices),
	uintptr(ppvData),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function SafeArrayPtrOfIndex(
  psa: Pointer;   // SAFEARRAY*
  rgIndices: Pointer;   // INT*
  ppvData: Pointer   // void** out
): Integer; stdcall;
  external 'OLEAUT32.dll' name 'SafeArrayPtrOfIndex';

result := DllCall("OLEAUT32\SafeArrayPtrOfIndex"
    , "Ptr", psa   ; SAFEARRAY*
    , "Ptr", rgIndices   ; INT*
    , "Ptr", ppvData   ; void** out
    , "Int")   ; return: HRESULT

●SafeArrayPtrOfIndex(psa, rgIndices, ppvData) = DLL("OLEAUT32.dll", "int SafeArrayPtrOfIndex(void*, void*, void*)")
# 呼び出し: SafeArrayPtrOfIndex(psa, rgIndices, ppvData)
# psa : SAFEARRAY* -> "void*"
# rgIndices : INT* -> "void*"
# ppvData : 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)。