VarI4FromI2

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

HRESULT VarI4FromI2(
    SHORT sIn,
    INT* plOut
);

<DllImport("OLEAUT32.dll", ExactSpelling:=True)>
Public Shared Function VarI4FromI2(
    sIn As Short,   ' SHORT
    <Out> ByRef plOut As Integer   ' INT* out
) As Integer
End Function

' sIn : SHORT
' plOut : INT* out
Declare PtrSafe Function VarI4FromI2 Lib "oleaut32" ( _
    ByVal sIn As Integer, _
    ByRef plOut As Long) As Long
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

VarI4FromI2 = ctypes.windll.oleaut32.VarI4FromI2
VarI4FromI2.restype = ctypes.c_int
VarI4FromI2.argtypes = [
    ctypes.c_short,  # sIn : SHORT
    ctypes.POINTER(ctypes.c_int),  # plOut : INT* out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('OLEAUT32.dll')
VarI4FromI2 = Fiddle::Function.new(
  lib['VarI4FromI2'],
  [
    Fiddle::TYPE_SHORT,  # sIn : SHORT
    Fiddle::TYPE_VOIDP,  # plOut : INT* out
  ],
  Fiddle::TYPE_INT)

#[link(name = "oleaut32")]
extern "system" {
    fn VarI4FromI2(
        sIn: i16,  // SHORT
        plOut: *mut i32  // INT* out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("OLEAUT32.dll")]
public static extern int VarI4FromI2(short sIn, out int plOut);
"@
$api = Add-Type -MemberDefinition $sig -Name 'OLEAUT32_VarI4FromI2' -Namespace Win32 -PassThru
# $api::VarI4FromI2(sIn, plOut)

#uselib "OLEAUT32.dll"
#func global VarI4FromI2 "VarI4FromI2" sptr, sptr
; VarI4FromI2 sIn, varptr(plOut)   ; 戻り値は stat
; sIn : SHORT -> "sptr"
; plOut : INT* 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")
	procVarI4FromI2 = oleaut32.NewProc("VarI4FromI2")
)

// sIn (SHORT), plOut (INT* out)
r1, _, err := procVarI4FromI2.Call(
	uintptr(sIn),
	uintptr(plOut),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function VarI4FromI2(
  sIn: Smallint;   // SHORT
  plOut: Pointer   // INT* out
): Integer; stdcall;
  external 'OLEAUT32.dll' name 'VarI4FromI2';

result := DllCall("OLEAUT32\VarI4FromI2"
    , "Short", sIn   ; SHORT
    , "Ptr", plOut   ; INT* out
    , "Int")   ; return: HRESULT

●VarI4FromI2(sIn, plOut) = DLL("OLEAUT32.dll", "int VarI4FromI2(int, void*)")
# 呼び出し: VarI4FromI2(sIn, plOut)
# sIn : SHORT -> "int"
# plOut : INT* 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 VarI4FromI2(
    sIn: i16, // SHORT
    plOut: [*c]i32 // INT* out
) callconv(std.os.windows.WINAPI) i32;

proc VarI4FromI2(
    sIn: int16,  # SHORT
    plOut: ptr int32  # INT* out
): int32 {.importc: "VarI4FromI2", stdcall, dynlib: "OLEAUT32.dll".}

pragma(lib, "oleaut32");
extern(Windows)
int VarI4FromI2(
    short sIn,   // SHORT
    int* plOut   // INT* out
);

ccall((:VarI4FromI2, "OLEAUT32.dll"), stdcall, Int32,
      (Int16, Ptr{Int32}),
      sIn, plOut)
# sIn : SHORT -> Int16
# plOut : INT* out -> Ptr{Int32}
# stdcall は 32bit のみ意味を持つ(x64 では無視)。

local ffi = require("ffi")
ffi.cdef[[
int32_t VarI4FromI2(
    int16_t sIn,
    int32_t* plOut);
]]
local oleaut32 = ffi.load("oleaut32")
-- oleaut32.VarI4FromI2(sIn, plOut)
-- sIn : SHORT
-- plOut : INT* 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 VarI4FromI2 = lib.func('__stdcall', 'VarI4FromI2', 'int32_t', ['int16_t', 'int32_t *']);
// VarI4FromI2(sIn, plOut)
// sIn : SHORT -> 'int16_t'
// plOut : INT* out -> 'int32_t *'
// 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", {
  VarI4FromI2: { parameters: ["i16", "pointer"], result: "i32" },
});
// lib.symbols.VarI4FromI2(sIn, plOut)
// sIn : SHORT -> "i16"
// plOut : INT* 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 VarI4FromI2(
    int16_t sIn,
    int32_t* plOut);
C, "OLEAUT32.dll");
// $ffi->VarI4FromI2(sIn, plOut);
// sIn : SHORT
// plOut : INT* 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 VarI4FromI2(
        short sIn,   // SHORT
        IntByReference plOut   // INT* out
    );
}

@[Link("oleaut32")]
lib LibOLEAUT32
  fun VarI4FromI2 = VarI4FromI2(
    sIn : Int16,   # SHORT
    plOut : Int32*   # INT* 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 VarI4FromI2Native = Int32 Function(Int16, Pointer<Int32>);
typedef VarI4FromI2Dart = int Function(int, Pointer<Int32>);
final VarI4FromI2 = DynamicLibrary.open('OLEAUT32.dll')
    .lookupFunction<VarI4FromI2Native, VarI4FromI2Dart>('VarI4FromI2');
// sIn : SHORT -> Int16
// plOut : INT* out -> Pointer<Int32>
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。

{$mode objfpc}{$H+}
function VarI4FromI2(
  sIn: Smallint;   // SHORT
  plOut: Pointer   // INT* out
): Integer; stdcall;
  external 'OLEAUT32.dll' name 'VarI4FromI2';

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

foreign import stdcall safe "VarI4FromI2"
  c_VarI4FromI2 :: Int16 -> Ptr Int32 -> IO Int32
-- sIn : SHORT -> Int16
-- plOut : INT* out -> Ptr Int32
-- 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 vari4fromi2 =
  foreign "VarI4FromI2"
    (int16_t @-> (ptr int32_t) @-> returning int32_t)
(* sIn : SHORT -> int16_t *)
(* plOut : INT* out -> (ptr int32_t) *)
(* 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 ("VarI4FromI2" var-i4-from-i2 :convention :stdcall) :int32
  (s-in :int16)   ; SHORT
  (pl-out :pointer))   ; INT* out
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。

use Win32::API;
my $VarI4FromI2 = Win32::API::More->new('OLEAUT32',
    'int VarI4FromI2(short sIn, LPVOID plOut)');
# my $ret = $VarI4FromI2->Call($sIn, $plOut);
# sIn : SHORT -> short
# plOut : INT* out -> LPVOID
# 値渡し構造体は pack() した文字列、または Win32::API::Struct を使用。