SafeArrayGetElement

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

HRESULT SafeArrayGetElement(
    SAFEARRAY* psa,
    INT* rgIndices,
    void* pv
);

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

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

SafeArrayGetElement = ctypes.windll.oleaut32.SafeArrayGetElement
SafeArrayGetElement.restype = ctypes.c_int
SafeArrayGetElement.argtypes = [
    ctypes.c_void_p,  # psa : SAFEARRAY*
    ctypes.POINTER(ctypes.c_int),  # rgIndices : INT*
    ctypes.POINTER(None),  # pv : void* out
]

require 'fiddle'
require 'fiddle/import'

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

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

$sig = @"
[DllImport("OLEAUT32.dll")]
public static extern int SafeArrayGetElement(IntPtr psa, ref int rgIndices, IntPtr pv);
"@
$api = Add-Type -MemberDefinition $sig -Name 'OLEAUT32_SafeArrayGetElement' -Namespace Win32 -PassThru
# $api::SafeArrayGetElement(psa, rgIndices, pv)

#uselib "OLEAUT32.dll"
#func global SafeArrayGetElement "SafeArrayGetElement" sptr, sptr, sptr
; SafeArrayGetElement varptr(psa), varptr(rgIndices), pv   ; 戻り値は stat
; psa : SAFEARRAY* -> "sptr"
; rgIndices : INT* -> "sptr"
; pv : 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。

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

var (
	oleaut32 = windows.NewLazySystemDLL("OLEAUT32.dll")
	procSafeArrayGetElement = oleaut32.NewProc("SafeArrayGetElement")
)

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

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

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

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

const std = @import("std");

extern "oleaut32" fn SafeArrayGetElement(
    psa: [*c]SAFEARRAY, // SAFEARRAY*
    rgIndices: [*c]i32, // INT*
    pv: ?*anyopaque // void* out
) callconv(std.os.windows.WINAPI) i32;

proc SafeArrayGetElement(
    psa: ptr SAFEARRAY,  # SAFEARRAY*
    rgIndices: ptr int32,  # INT*
    pv: pointer  # void* out
): int32 {.importc: "SafeArrayGetElement", stdcall, dynlib: "OLEAUT32.dll".}

pragma(lib, "oleaut32");
extern(Windows)
int SafeArrayGetElement(
    SAFEARRAY* psa,   // SAFEARRAY*
    int* rgIndices,   // INT*
    void* pv   // void* out
);

ccall((:SafeArrayGetElement, "OLEAUT32.dll"), stdcall, Int32,
      (Ptr{SAFEARRAY}, Ptr{Int32}, Ptr{Cvoid}),
      psa, rgIndices, pv)
# psa : SAFEARRAY* -> Ptr{SAFEARRAY}
# rgIndices : INT* -> Ptr{Int32}
# pv : void* out -> Ptr{Cvoid}
# stdcall は 32bit のみ意味を持つ(x64 では無視)。

local ffi = require("ffi")
ffi.cdef[[
int32_t SafeArrayGetElement(
    void* psa,
    int32_t* rgIndices,
    void* pv);
]]
local oleaut32 = ffi.load("oleaut32")
-- oleaut32.SafeArrayGetElement(psa, rgIndices, pv)
-- psa : SAFEARRAY*
-- rgIndices : INT*
-- pv : void* out
-- 構造体/GUIDへのポインタは cdef が通るよう void* で表記(実型は各引数コメント参照)。値渡し構造体・enum は対応する typedef を cdef に追加すること。

const koffi = require('koffi');
const lib = koffi.load('OLEAUT32.dll');
const SafeArrayGetElement = lib.func('__stdcall', 'SafeArrayGetElement', 'int32_t', ['void *', 'int32_t *', 'void *']);
// SafeArrayGetElement(psa, rgIndices, pv)
// psa : SAFEARRAY* -> 'void *'
// rgIndices : INT* -> 'int32_t *'
// pv : void* out -> 'void *'
// 出力ポインタは koffi.out(...) で包む。構造体は koffi.struct で定義。

const lib = Deno.dlopen("OLEAUT32.dll", {
  SafeArrayGetElement: { parameters: ["pointer", "pointer", "pointer"], result: "i32" },
});
// lib.symbols.SafeArrayGetElement(psa, rgIndices, pv)
// psa : SAFEARRAY* -> "pointer"
// rgIndices : INT* -> "pointer"
// pv : void* out -> "pointer"
// 文字列引数は "buffer"(NUL 終端のバイト列を Uint8Array で渡す)。
// 値渡し構造体は { struct: [ ...field types... ] } を使用。

<?php
$ffi = FFI::cdef(<<<C
int32_t SafeArrayGetElement(
    void* psa,
    int32_t* rgIndices,
    void* pv);
C, "OLEAUT32.dll");
// $ffi->SafeArrayGetElement(psa, rgIndices, pv);
// psa : SAFEARRAY*
// rgIndices : INT*
// pv : void* out
// 構造体/GUIDへのポインタは cdef が通るよう void* で表記(実型は各引数コメント参照)。値渡し構造体・enum は対応する typedef を cdef に追加すること。
// WINAPI(stdcall): x64 では呼出規約が統一されるため問題なし。x86 では __stdcall 対応のラッパが必要な場合あり。

import com.sun.jna.*;
import com.sun.jna.ptr.*;
import com.sun.jna.win32.StdCallLibrary;
import com.sun.jna.win32.W32APIOptions;

public interface Oleaut32 extends StdCallLibrary {
    Oleaut32 INSTANCE = Native.load("oleaut32", Oleaut32.class);
    int SafeArrayGetElement(
        Pointer psa,   // SAFEARRAY*
        IntByReference rgIndices,   // INT*
        Pointer pv   // void* out
    );
}

@[Link("oleaut32")]
lib LibOLEAUT32
  fun SafeArrayGetElement = SafeArrayGetElement(
    psa : SAFEARRAY*,   # SAFEARRAY*
    rgIndices : Int32*,   # INT*
    pv : Void*   # void* out
  ) : Int32
end
# 構造体/GUID/enum は lib 内に対応する型定義が必要。
# 呼出規約: x64 は規約統一のため OK。x86(32bit)は WINAPI=stdcall だが Crystal の fun に stdcall 付与構文がなく非対応。

import 'dart:ffi';
import 'package:ffi/ffi.dart';

typedef SafeArrayGetElementNative = Int32 Function(Pointer<Void>, Pointer<Int32>, Pointer<Void>);
typedef SafeArrayGetElementDart = int Function(Pointer<Void>, Pointer<Int32>, Pointer<Void>);
final SafeArrayGetElement = DynamicLibrary.open('OLEAUT32.dll')
    .lookupFunction<SafeArrayGetElementNative, SafeArrayGetElementDart>('SafeArrayGetElement');
// psa : SAFEARRAY* -> Pointer<Void>
// rgIndices : INT* -> Pointer<Int32>
// pv : void* out -> Pointer<Void>
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。

{$mode objfpc}{$H+}
function SafeArrayGetElement(
  psa: Pointer;   // SAFEARRAY*
  rgIndices: Pointer;   // INT*
  pv: Pointer   // void* out
): Integer; stdcall;
  external 'OLEAUT32.dll' name 'SafeArrayGetElement';

import Foreign
import Foreign.C.Types
import Foreign.C.String

foreign import stdcall safe "SafeArrayGetElement"
  c_SafeArrayGetElement :: Ptr () -> Ptr Int32 -> Ptr () -> IO Int32
-- psa : SAFEARRAY* -> Ptr ()
-- rgIndices : INT* -> Ptr Int32
-- pv : void* out -> Ptr ()
-- 要 GHC(Windows)。stdcall は x64 では ccall として扱われる。ブロックする API は safe 呼び出し推奨。

open Ctypes
open Foreign

let safearraygetelement =
  foreign "SafeArrayGetElement"
    ((ptr void) @-> (ptr int32_t) @-> (ptr void) @-> returning int32_t)
(* psa : SAFEARRAY* -> (ptr void) *)
(* rgIndices : INT* -> (ptr int32_t) *)
(* pv : void* out -> (ptr void) *)
(* foreign は cdecl 前提。x64 Windows では WINAPI と一致。構造体は ctypes structure を定義のこと。 *)

(cffi:define-foreign-library oleaut32 (t "OLEAUT32.dll"))
(cffi:use-foreign-library oleaut32)

(cffi:defcfun ("SafeArrayGetElement" safe-array-get-element :convention :stdcall) :int32
  (psa :pointer)   ; SAFEARRAY*
  (rg-indices :pointer)   ; INT*
  (pv :pointer))   ; void* out
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。

use Win32::API;
my $SafeArrayGetElement = Win32::API::More->new('OLEAUT32',
    'int SafeArrayGetElement(LPVOID psa, LPVOID rgIndices, LPVOID pv)');
# my $ret = $SafeArrayGetElement->Call($psa, $rgIndices, $pv);
# psa : SAFEARRAY* -> LPVOID
# rgIndices : INT* -> LPVOID
# pv : void* out -> LPVOID
# 値渡し構造体は pack() した文字列、または Win32::API::Struct を使用。