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DsGetDcOpenA

関数
DC検出列挙のためのコンテキストハンドルを開く。
DLLNETAPI32.dll文字セットANSI (-A)呼出規約winapi対応OSWindows Vista 以降
📘 Microsoft Learn (日本語) · English

シグネチャ

// NETAPI32.dll  (ANSI / -A)
#include <windows.h>

DWORD DsGetDcOpenA(
    LPCSTR DnsName,
    DWORD OptionFlags,
    LPCSTR SiteName,   // optional
    GUID* DomainGuid,   // optional
    LPCSTR DnsForestName,   // optional
    DWORD DcFlags,
    HANDLE* RetGetDcContext
);

パラメーター

名前型方向説明
DnsNameLPCSTRin検索対象のドメインDNS名を指すANSI文字列。
OptionFlagsDWORDinDC列挙の挙動を制御するDS_ONLY_*等のオプションフラグ。
SiteNameLPCSTRinoptional優先するサイト名を指すANSI文字列。指定不要ならNULL可。
DomainGuidGUID*inoptional対象ドメインのGUIDへのポインタ。フォールバック用で不要ならNULL可。
DnsForestNameLPCSTRinoptional対象フォレストのDNS名を指すANSI文字列。指定不要ならNULL可。
DcFlagsDWORDin返すDCの条件を示すDS_*フラグ。書き込み可能DCやGC等を指定する。
RetGetDcContextHANDLE*out以降のDsGetDcNext呼び出しで使う列挙コンテキストハンドルを受け取る出力。

戻り値の型: DWORD

各言語での呼び出し定義

// NETAPI32.dll  (ANSI / -A)
#include <windows.h>

DWORD DsGetDcOpenA(
    LPCSTR DnsName,
    DWORD OptionFlags,
    LPCSTR SiteName,   // optional
    GUID* DomainGuid,   // optional
    LPCSTR DnsForestName,   // optional
    DWORD DcFlags,
    HANDLE* RetGetDcContext
);
[DllImport("NETAPI32.dll", CharSet = CharSet.Ansi, ExactSpelling = true)]
static extern uint DsGetDcOpenA(
    [MarshalAs(UnmanagedType.LPStr)] string DnsName,   // LPCSTR
    uint OptionFlags,   // DWORD
    [MarshalAs(UnmanagedType.LPStr)] string SiteName,   // LPCSTR optional
    IntPtr DomainGuid,   // GUID* optional
    [MarshalAs(UnmanagedType.LPStr)] string DnsForestName,   // LPCSTR optional
    uint DcFlags,   // DWORD
    IntPtr RetGetDcContext   // HANDLE* out
);
<DllImport("NETAPI32.dll", CharSet:=CharSet.Ansi, ExactSpelling:=True)>
Public Shared Function DsGetDcOpenA(
    <MarshalAs(UnmanagedType.LPStr)> DnsName As String,   ' LPCSTR
    OptionFlags As UInteger,   ' DWORD
    <MarshalAs(UnmanagedType.LPStr)> SiteName As String,   ' LPCSTR optional
    DomainGuid As IntPtr,   ' GUID* optional
    <MarshalAs(UnmanagedType.LPStr)> DnsForestName As String,   ' LPCSTR optional
    DcFlags As UInteger,   ' DWORD
    RetGetDcContext As IntPtr   ' HANDLE* out
) As UInteger
End Function
' DnsName : LPCSTR
' OptionFlags : DWORD
' SiteName : LPCSTR optional
' DomainGuid : GUID* optional
' DnsForestName : LPCSTR optional
' DcFlags : DWORD
' RetGetDcContext : HANDLE* out
Declare PtrSafe Function DsGetDcOpenA Lib "netapi32" ( _
    ByVal DnsName As String, _
    ByVal OptionFlags As Long, _
    ByVal SiteName As String, _
    ByVal DomainGuid As LongPtr, _
    ByVal DnsForestName As String, _
    ByVal DcFlags As Long, _
    ByVal RetGetDcContext 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

DsGetDcOpenA = ctypes.windll.netapi32.DsGetDcOpenA
DsGetDcOpenA.restype = wintypes.DWORD
DsGetDcOpenA.argtypes = [
    wintypes.LPCSTR,  # DnsName : LPCSTR
    wintypes.DWORD,  # OptionFlags : DWORD
    wintypes.LPCSTR,  # SiteName : LPCSTR optional
    ctypes.c_void_p,  # DomainGuid : GUID* optional
    wintypes.LPCSTR,  # DnsForestName : LPCSTR optional
    wintypes.DWORD,  # DcFlags : DWORD
    ctypes.c_void_p,  # RetGetDcContext : HANDLE* out
]
require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('NETAPI32.dll')
DsGetDcOpenA = Fiddle::Function.new(
  lib['DsGetDcOpenA'],
  [
    Fiddle::TYPE_VOIDP,  # DnsName : LPCSTR
    -Fiddle::TYPE_INT,  # OptionFlags : DWORD
    Fiddle::TYPE_VOIDP,  # SiteName : LPCSTR optional
    Fiddle::TYPE_VOIDP,  # DomainGuid : GUID* optional
    Fiddle::TYPE_VOIDP,  # DnsForestName : LPCSTR optional
    -Fiddle::TYPE_INT,  # DcFlags : DWORD
    Fiddle::TYPE_VOIDP,  # RetGetDcContext : HANDLE* out
  ],
  -Fiddle::TYPE_INT)
#[link(name = "netapi32")]
extern "system" {
    fn DsGetDcOpenA(
        DnsName: *const u8,  // LPCSTR
        OptionFlags: u32,  // DWORD
        SiteName: *const u8,  // LPCSTR optional
        DomainGuid: *mut GUID,  // GUID* optional
        DnsForestName: *const u8,  // LPCSTR optional
        DcFlags: u32,  // DWORD
        RetGetDcContext: *mut *mut core::ffi::c_void  // HANDLE* out
    ) -> u32;
}
// crates: windows-sys provides ready-made bindings for this API.
$sig = @"
[DllImport("NETAPI32.dll", CharSet = CharSet.Ansi)]
public static extern uint DsGetDcOpenA([MarshalAs(UnmanagedType.LPStr)] string DnsName, uint OptionFlags, [MarshalAs(UnmanagedType.LPStr)] string SiteName, IntPtr DomainGuid, [MarshalAs(UnmanagedType.LPStr)] string DnsForestName, uint DcFlags, IntPtr RetGetDcContext);
"@
$api = Add-Type -MemberDefinition $sig -Name 'NETAPI32_DsGetDcOpenA' -Namespace Win32 -PassThru
# $api::DsGetDcOpenA(DnsName, OptionFlags, SiteName, DomainGuid, DnsForestName, DcFlags, RetGetDcContext)
#uselib "NETAPI32.dll"
#func global DsGetDcOpenA "DsGetDcOpenA" sptr, sptr, sptr, sptr, sptr, sptr, sptr
; DsGetDcOpenA DnsName, OptionFlags, SiteName, varptr(DomainGuid), DnsForestName, DcFlags, RetGetDcContext   ; 戻り値は stat
; DnsName : LPCSTR -> "sptr"
; OptionFlags : DWORD -> "sptr"
; SiteName : LPCSTR optional -> "sptr"
; DomainGuid : GUID* optional -> "sptr"
; DnsForestName : LPCSTR optional -> "sptr"
; DcFlags : DWORD -> "sptr"
; RetGetDcContext : HANDLE* 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。
出力引数: 
#uselib "NETAPI32.dll"
#cfunc global DsGetDcOpenA "DsGetDcOpenA" str, int, str, var, str, int, sptr
; res = DsGetDcOpenA(DnsName, OptionFlags, SiteName, DomainGuid, DnsForestName, DcFlags, RetGetDcContext)
; DnsName : LPCSTR -> "str"
; OptionFlags : DWORD -> "int"
; SiteName : LPCSTR optional -> "str"
; DomainGuid : GUID* optional -> "var"
; DnsForestName : LPCSTR optional -> "str"
; DcFlags : DWORD -> "int"
; RetGetDcContext : HANDLE* 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。
出力引数: 
; DWORD DsGetDcOpenA(LPCSTR DnsName, DWORD OptionFlags, LPCSTR SiteName, GUID* DomainGuid, LPCSTR DnsForestName, DWORD DcFlags, HANDLE* RetGetDcContext)
#uselib "NETAPI32.dll"
#cfunc global DsGetDcOpenA "DsGetDcOpenA" str, int, str, var, str, int, intptr
; res = DsGetDcOpenA(DnsName, OptionFlags, SiteName, DomainGuid, DnsForestName, DcFlags, RetGetDcContext)
; DnsName : LPCSTR -> "str"
; OptionFlags : DWORD -> "int"
; SiteName : LPCSTR optional -> "str"
; DomainGuid : GUID* optional -> "var"
; DnsForestName : LPCSTR optional -> "str"
; DcFlags : DWORD -> "int"
; RetGetDcContext : HANDLE* 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 (
	netapi32 = windows.NewLazySystemDLL("NETAPI32.dll")
	procDsGetDcOpenA = netapi32.NewProc("DsGetDcOpenA")
)

// DnsName (LPCSTR), OptionFlags (DWORD), SiteName (LPCSTR optional), DomainGuid (GUID* optional), DnsForestName (LPCSTR optional), DcFlags (DWORD), RetGetDcContext (HANDLE* out)
r1, _, err := procDsGetDcOpenA.Call(
	uintptr(unsafe.Pointer(windows.BytePtrFromString(DnsName))),
	uintptr(OptionFlags),
	uintptr(unsafe.Pointer(windows.BytePtrFromString(SiteName))),
	uintptr(DomainGuid),
	uintptr(unsafe.Pointer(windows.BytePtrFromString(DnsForestName))),
	uintptr(DcFlags),
	uintptr(RetGetDcContext),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // DWORD
function DsGetDcOpenA(
  DnsName: PAnsiChar;   // LPCSTR
  OptionFlags: DWORD;   // DWORD
  SiteName: PAnsiChar;   // LPCSTR optional
  DomainGuid: PGUID;   // GUID* optional
  DnsForestName: PAnsiChar;   // LPCSTR optional
  DcFlags: DWORD;   // DWORD
  RetGetDcContext: Pointer   // HANDLE* out
): DWORD; stdcall;
  external 'NETAPI32.dll' name 'DsGetDcOpenA';
result := DllCall("NETAPI32\DsGetDcOpenA"
    , "AStr", DnsName   ; LPCSTR
    , "UInt", OptionFlags   ; DWORD
    , "AStr", SiteName   ; LPCSTR optional
    , "Ptr", DomainGuid   ; GUID* optional
    , "AStr", DnsForestName   ; LPCSTR optional
    , "UInt", DcFlags   ; DWORD
    , "Ptr", RetGetDcContext   ; HANDLE* out
    , "UInt")   ; return: DWORD
●DsGetDcOpenA(DnsName, OptionFlags, SiteName, DomainGuid, DnsForestName, DcFlags, RetGetDcContext) = DLL("NETAPI32.dll", "dword DsGetDcOpenA(char*, dword, char*, void*, char*, dword, void*)")
# 呼び出し: DsGetDcOpenA(DnsName, OptionFlags, SiteName, DomainGuid, DnsForestName, DcFlags, RetGetDcContext)
# DnsName : LPCSTR -> "char*"
# OptionFlags : DWORD -> "dword"
# SiteName : LPCSTR optional -> "char*"
# DomainGuid : GUID* optional -> "void*"
# DnsForestName : LPCSTR optional -> "char*"
# DcFlags : DWORD -> "dword"
# RetGetDcContext : HANDLE* 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 "netapi32" fn DsGetDcOpenA(
    DnsName: [*c]const u8, // LPCSTR
    OptionFlags: u32, // DWORD
    SiteName: [*c]const u8, // LPCSTR optional
    DomainGuid: [*c]GUID, // GUID* optional
    DnsForestName: [*c]const u8, // LPCSTR optional
    DcFlags: u32, // DWORD
    RetGetDcContext: ?*anyopaque // HANDLE* out
) callconv(std.os.windows.WINAPI) u32;
proc DsGetDcOpenA(
    DnsName: cstring,  # LPCSTR
    OptionFlags: uint32,  # DWORD
    SiteName: cstring,  # LPCSTR optional
    DomainGuid: ptr GUID,  # GUID* optional
    DnsForestName: cstring,  # LPCSTR optional
    DcFlags: uint32,  # DWORD
    RetGetDcContext: pointer  # HANDLE* out
): uint32 {.importc: "DsGetDcOpenA", stdcall, dynlib: "NETAPI32.dll".}
pragma(lib, "netapi32");
extern(Windows)
uint DsGetDcOpenA(
    const(char)* DnsName,   // LPCSTR
    uint OptionFlags,   // DWORD
    const(char)* SiteName,   // LPCSTR optional
    GUID* DomainGuid,   // GUID* optional
    const(char)* DnsForestName,   // LPCSTR optional
    uint DcFlags,   // DWORD
    void* RetGetDcContext   // HANDLE* out
);
ccall((:DsGetDcOpenA, "NETAPI32.dll"), stdcall, UInt32,
      (Cstring, UInt32, Cstring, Ptr{GUID}, Cstring, UInt32, Ptr{Cvoid}),
      DnsName, OptionFlags, SiteName, DomainGuid, DnsForestName, DcFlags, RetGetDcContext)
# DnsName : LPCSTR -> Cstring
# OptionFlags : DWORD -> UInt32
# SiteName : LPCSTR optional -> Cstring
# DomainGuid : GUID* optional -> Ptr{GUID}
# DnsForestName : LPCSTR optional -> Cstring
# DcFlags : DWORD -> UInt32
# RetGetDcContext : HANDLE* out -> Ptr{Cvoid}
# stdcall は 32bit のみ意味を持つ(x64 では無視)。
local ffi = require("ffi")
ffi.cdef[[
uint32_t DsGetDcOpenA(
    const char* DnsName,
    uint32_t OptionFlags,
    const char* SiteName,
    void* DomainGuid,
    const char* DnsForestName,
    uint32_t DcFlags,
    void* RetGetDcContext);
]]
local netapi32 = ffi.load("netapi32")
-- netapi32.DsGetDcOpenA(DnsName, OptionFlags, SiteName, DomainGuid, DnsForestName, DcFlags, RetGetDcContext)
-- DnsName : LPCSTR
-- OptionFlags : DWORD
-- SiteName : LPCSTR optional
-- DomainGuid : GUID* optional
-- DnsForestName : LPCSTR optional
-- DcFlags : DWORD
-- RetGetDcContext : HANDLE* 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('NETAPI32.dll');
const DsGetDcOpenA = lib.func('__stdcall', 'DsGetDcOpenA', 'uint32_t', ['str', 'uint32_t', 'str', 'void *', 'str', 'uint32_t', 'void *']);
// DsGetDcOpenA(DnsName, OptionFlags, SiteName, DomainGuid, DnsForestName, DcFlags, RetGetDcContext)
// DnsName : LPCSTR -> 'str'
// OptionFlags : DWORD -> 'uint32_t'
// SiteName : LPCSTR optional -> 'str'
// DomainGuid : GUID* optional -> 'void *'
// DnsForestName : LPCSTR optional -> 'str'
// DcFlags : DWORD -> 'uint32_t'
// RetGetDcContext : HANDLE* 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("NETAPI32.dll", {
  DsGetDcOpenA: { parameters: ["buffer", "u32", "buffer", "pointer", "buffer", "u32", "pointer"], result: "u32" },
});
// lib.symbols.DsGetDcOpenA(DnsName, OptionFlags, SiteName, DomainGuid, DnsForestName, DcFlags, RetGetDcContext)
// DnsName : LPCSTR -> "buffer"
// OptionFlags : DWORD -> "u32"
// SiteName : LPCSTR optional -> "buffer"
// DomainGuid : GUID* optional -> "pointer"
// DnsForestName : LPCSTR optional -> "buffer"
// DcFlags : DWORD -> "u32"
// RetGetDcContext : HANDLE* out -> "pointer"
// 文字列は "buffer"。ANSI(-A) は new TextEncoder() で UTF-8/ANSI バイト列(末尾に \x00)を渡す。
// 値渡し構造体は { struct: [ ...field types... ] } を使用。
<?php
$ffi = FFI::cdef(<<<C
uint32_t DsGetDcOpenA(
    const char* DnsName,
    uint32_t OptionFlags,
    const char* SiteName,
    void* DomainGuid,
    const char* DnsForestName,
    uint32_t DcFlags,
    void* RetGetDcContext);
C, "NETAPI32.dll");
// $ffi->DsGetDcOpenA(DnsName, OptionFlags, SiteName, DomainGuid, DnsForestName, DcFlags, RetGetDcContext);
// DnsName : LPCSTR
// OptionFlags : DWORD
// SiteName : LPCSTR optional
// DomainGuid : GUID* optional
// DnsForestName : LPCSTR optional
// DcFlags : DWORD
// RetGetDcContext : HANDLE* 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 Netapi32 extends StdCallLibrary {
    Netapi32 INSTANCE = Native.load("netapi32", Netapi32.class, W32APIOptions.ASCII_OPTIONS);
    int DsGetDcOpenA(
        String DnsName,   // LPCSTR
        int OptionFlags,   // DWORD
        String SiteName,   // LPCSTR optional
        Pointer DomainGuid,   // GUID* optional
        String DnsForestName,   // LPCSTR optional
        int DcFlags,   // DWORD
        Pointer RetGetDcContext   // HANDLE* out
    );
}
@[Link("netapi32")]
lib LibNETAPI32
  fun DsGetDcOpenA = DsGetDcOpenA(
    DnsName : UInt8*,   # LPCSTR
    OptionFlags : UInt32,   # DWORD
    SiteName : UInt8*,   # LPCSTR optional
    DomainGuid : GUID*,   # GUID* optional
    DnsForestName : UInt8*,   # LPCSTR optional
    DcFlags : UInt32,   # DWORD
    RetGetDcContext : Void*   # HANDLE* out
  ) : UInt32
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 DsGetDcOpenANative = Uint32 Function(Pointer<Utf8>, Uint32, Pointer<Utf8>, Pointer<Void>, Pointer<Utf8>, Uint32, Pointer<Void>);
typedef DsGetDcOpenADart = int Function(Pointer<Utf8>, int, Pointer<Utf8>, Pointer<Void>, Pointer<Utf8>, int, Pointer<Void>);
final DsGetDcOpenA = DynamicLibrary.open('NETAPI32.dll')
    .lookupFunction<DsGetDcOpenANative, DsGetDcOpenADart>('DsGetDcOpenA');
// DnsName : LPCSTR -> Pointer<Utf8>
// OptionFlags : DWORD -> Uint32
// SiteName : LPCSTR optional -> Pointer<Utf8>
// DomainGuid : GUID* optional -> Pointer<Void>
// DnsForestName : LPCSTR optional -> Pointer<Utf8>
// DcFlags : DWORD -> Uint32
// RetGetDcContext : HANDLE* out -> Pointer<Void>
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。
{$mode objfpc}{$H+}
function DsGetDcOpenA(
  DnsName: PAnsiChar;   // LPCSTR
  OptionFlags: DWORD;   // DWORD
  SiteName: PAnsiChar;   // LPCSTR optional
  DomainGuid: PGUID;   // GUID* optional
  DnsForestName: PAnsiChar;   // LPCSTR optional
  DcFlags: DWORD;   // DWORD
  RetGetDcContext: Pointer   // HANDLE* out
): DWORD; stdcall;
  external 'NETAPI32.dll' name 'DsGetDcOpenA';
import Foreign
import Foreign.C.Types
import Foreign.C.String

foreign import stdcall safe "DsGetDcOpenA"
  c_DsGetDcOpenA :: CString -> Word32 -> CString -> Ptr () -> CString -> Word32 -> Ptr () -> IO Word32
-- DnsName : LPCSTR -> CString
-- OptionFlags : DWORD -> Word32
-- SiteName : LPCSTR optional -> CString
-- DomainGuid : GUID* optional -> Ptr ()
-- DnsForestName : LPCSTR optional -> CString
-- DcFlags : DWORD -> Word32
-- RetGetDcContext : HANDLE* 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 dsgetdcopena =
  foreign "DsGetDcOpenA"
    (string @-> uint32_t @-> string @-> (ptr void) @-> string @-> uint32_t @-> (ptr void) @-> returning uint32_t)
(* DnsName : LPCSTR -> string *)
(* OptionFlags : DWORD -> uint32_t *)
(* SiteName : LPCSTR optional -> string *)
(* DomainGuid : GUID* optional -> (ptr void) *)
(* DnsForestName : LPCSTR optional -> string *)
(* DcFlags : DWORD -> uint32_t *)
(* RetGetDcContext : HANDLE* 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 netapi32 (t "NETAPI32.dll"))
(cffi:use-foreign-library netapi32)

(cffi:defcfun ("DsGetDcOpenA" ds-get-dc-open-a :convention :stdcall) :uint32
  (dns-name :string)   ; LPCSTR
  (option-flags :uint32)   ; DWORD
  (site-name :string)   ; LPCSTR optional
  (domain-guid :pointer)   ; GUID* optional
  (dns-forest-name :string)   ; LPCSTR optional
  (dc-flags :uint32)   ; DWORD
  (ret-get-dc-context :pointer))   ; HANDLE* out
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。
use Win32::API;
my $DsGetDcOpenA = Win32::API::More->new('NETAPI32',
    'DWORD DsGetDcOpenA(LPCSTR DnsName, DWORD OptionFlags, LPCSTR SiteName, LPVOID DomainGuid, LPCSTR DnsForestName, DWORD DcFlags, HANDLE RetGetDcContext)');
# my $ret = $DsGetDcOpenA->Call($DnsName, $OptionFlags, $SiteName, $DomainGuid, $DnsForestName, $DcFlags, $RetGetDcContext);
# DnsName : LPCSTR -> LPCSTR
# OptionFlags : DWORD -> DWORD
# SiteName : LPCSTR optional -> LPCSTR
# DomainGuid : GUID* optional -> LPVOID
# DnsForestName : LPCSTR optional -> LPCSTR
# DcFlags : DWORD -> DWORD
# RetGetDcContext : HANDLE* out -> HANDLE
# 値渡し構造体は pack() した文字列、または Win32::API::Struct を使用。

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