VariantToPropVariant

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

HRESULT VariantToPropVariant(
    const VARIANT* pVar,
    PROPVARIANT* pPropVar
);

<DllImport("PROPSYS.dll", ExactSpelling:=True)>
Public Shared Function VariantToPropVariant(
    pVar As IntPtr,   ' VARIANT*
    pPropVar As IntPtr   ' PROPVARIANT* out
) As Integer
End Function

' pVar : VARIANT*
' pPropVar : PROPVARIANT* out
Declare PtrSafe Function VariantToPropVariant Lib "propsys" ( _
    ByVal pVar As LongPtr, _
    ByVal pPropVar 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

VariantToPropVariant = ctypes.windll.propsys.VariantToPropVariant
VariantToPropVariant.restype = ctypes.c_int
VariantToPropVariant.argtypes = [
    ctypes.c_void_p,  # pVar : VARIANT*
    ctypes.c_void_p,  # pPropVar : PROPVARIANT* out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('PROPSYS.dll')
VariantToPropVariant = Fiddle::Function.new(
  lib['VariantToPropVariant'],
  [
    Fiddle::TYPE_VOIDP,  # pVar : VARIANT*
    Fiddle::TYPE_VOIDP,  # pPropVar : PROPVARIANT* out
  ],
  Fiddle::TYPE_INT)

#[link(name = "propsys")]
extern "system" {
    fn VariantToPropVariant(
        pVar: *const VARIANT,  // VARIANT*
        pPropVar: *mut PROPVARIANT  // PROPVARIANT* out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("PROPSYS.dll")]
public static extern int VariantToPropVariant(IntPtr pVar, IntPtr pPropVar);
"@
$api = Add-Type -MemberDefinition $sig -Name 'PROPSYS_VariantToPropVariant' -Namespace Win32 -PassThru
# $api::VariantToPropVariant(pVar, pPropVar)

#uselib "PROPSYS.dll"
#func global VariantToPropVariant "VariantToPropVariant" sptr, sptr
; VariantToPropVariant varptr(pVar), varptr(pPropVar)   ; 戻り値は stat
; pVar : VARIANT* -> "sptr"
; pPropVar : PROPVARIANT* 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 (
	propsys = windows.NewLazySystemDLL("PROPSYS.dll")
	procVariantToPropVariant = propsys.NewProc("VariantToPropVariant")
)

// pVar (VARIANT*), pPropVar (PROPVARIANT* out)
r1, _, err := procVariantToPropVariant.Call(
	uintptr(pVar),
	uintptr(pPropVar),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function VariantToPropVariant(
  pVar: Pointer;   // VARIANT*
  pPropVar: Pointer   // PROPVARIANT* out
): Integer; stdcall;
  external 'PROPSYS.dll' name 'VariantToPropVariant';

result := DllCall("PROPSYS\VariantToPropVariant"
    , "Ptr", pVar   ; VARIANT*
    , "Ptr", pPropVar   ; PROPVARIANT* out
    , "Int")   ; return: HRESULT

●VariantToPropVariant(pVar, pPropVar) = DLL("PROPSYS.dll", "int VariantToPropVariant(void*, void*)")
# 呼び出し: VariantToPropVariant(pVar, pPropVar)
# pVar : VARIANT* -> "void*"
# pPropVar : PROPVARIANT* 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 "propsys" fn VariantToPropVariant(
    pVar: [*c]VARIANT, // VARIANT*
    pPropVar: [*c]PROPVARIANT // PROPVARIANT* out
) callconv(std.os.windows.WINAPI) i32;

proc VariantToPropVariant(
    pVar: ptr VARIANT,  # VARIANT*
    pPropVar: ptr PROPVARIANT  # PROPVARIANT* out
): int32 {.importc: "VariantToPropVariant", stdcall, dynlib: "PROPSYS.dll".}

pragma(lib, "propsys");
extern(Windows)
int VariantToPropVariant(
    VARIANT* pVar,   // VARIANT*
    PROPVARIANT* pPropVar   // PROPVARIANT* out
);

ccall((:VariantToPropVariant, "PROPSYS.dll"), stdcall, Int32,
      (Ptr{VARIANT}, Ptr{PROPVARIANT}),
      pVar, pPropVar)
# pVar : VARIANT* -> Ptr{VARIANT}
# pPropVar : PROPVARIANT* out -> Ptr{PROPVARIANT}
# stdcall は 32bit のみ意味を持つ(x64 では無視)。

local ffi = require("ffi")
ffi.cdef[[
int32_t VariantToPropVariant(
    void* pVar,
    void* pPropVar);
]]
local propsys = ffi.load("propsys")
-- propsys.VariantToPropVariant(pVar, pPropVar)
-- pVar : VARIANT*
-- pPropVar : PROPVARIANT* 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('PROPSYS.dll');
const VariantToPropVariant = lib.func('__stdcall', 'VariantToPropVariant', 'int32_t', ['void *', 'void *']);
// VariantToPropVariant(pVar, pPropVar)
// pVar : VARIANT* -> 'void *'
// pPropVar : PROPVARIANT* 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("PROPSYS.dll", {
  VariantToPropVariant: { parameters: ["pointer", "pointer"], result: "i32" },
});
// lib.symbols.VariantToPropVariant(pVar, pPropVar)
// pVar : VARIANT* -> "pointer"
// pPropVar : PROPVARIANT* 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 VariantToPropVariant(
    void* pVar,
    void* pPropVar);
C, "PROPSYS.dll");
// $ffi->VariantToPropVariant(pVar, pPropVar);
// pVar : VARIANT*
// pPropVar : PROPVARIANT* 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 Propsys extends StdCallLibrary {
    Propsys INSTANCE = Native.load("propsys", Propsys.class);
    int VariantToPropVariant(
        Pointer pVar,   // VARIANT*
        Pointer pPropVar   // PROPVARIANT* out
    );
}

@[Link("propsys")]
lib LibPROPSYS
  fun VariantToPropVariant = VariantToPropVariant(
    pVar : VARIANT*,   # VARIANT*
    pPropVar : PROPVARIANT*   # PROPVARIANT* 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 VariantToPropVariantNative = Int32 Function(Pointer<Void>, Pointer<Void>);
typedef VariantToPropVariantDart = int Function(Pointer<Void>, Pointer<Void>);
final VariantToPropVariant = DynamicLibrary.open('PROPSYS.dll')
    .lookupFunction<VariantToPropVariantNative, VariantToPropVariantDart>('VariantToPropVariant');
// pVar : VARIANT* -> Pointer<Void>
// pPropVar : PROPVARIANT* out -> Pointer<Void>
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。

{$mode objfpc}{$H+}
function VariantToPropVariant(
  pVar: Pointer;   // VARIANT*
  pPropVar: Pointer   // PROPVARIANT* out
): Integer; stdcall;
  external 'PROPSYS.dll' name 'VariantToPropVariant';

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

foreign import stdcall safe "VariantToPropVariant"
  c_VariantToPropVariant :: Ptr () -> Ptr () -> IO Int32
-- pVar : VARIANT* -> Ptr ()
-- pPropVar : PROPVARIANT* 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 varianttopropvariant =
  foreign "VariantToPropVariant"
    ((ptr void) @-> (ptr void) @-> returning int32_t)
(* pVar : VARIANT* -> (ptr void) *)
(* pPropVar : PROPVARIANT* 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 propsys (t "PROPSYS.dll"))
(cffi:use-foreign-library propsys)

(cffi:defcfun ("VariantToPropVariant" variant-to-prop-variant :convention :stdcall) :int32
  (p-var :pointer)   ; VARIANT*
  (p-prop-var :pointer))   ; PROPVARIANT* out
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。

use Win32::API;
my $VariantToPropVariant = Win32::API::More->new('PROPSYS',
    'int VariantToPropVariant(LPVOID pVar, LPVOID pPropVar)');
# my $ret = $VariantToPropVariant->Call($pVar, $pPropVar);
# pVar : VARIANT* -> LPVOID
# pPropVar : PROPVARIANT* out -> LPVOID
# 値渡し構造体は pack() した文字列、または Win32::API::Struct を使用。