ホーム › Devices.DeviceAndDriverInstallation › SetupDiClassNameFromGuidExW

SetupDiClassNameFromGuidExW

関数

指定マシンでクラスGUIDからクラス名を取得する。

DLLSETUPAPI.dll文字セットUnicode (-W)呼出規約winapiSetLastErrorあり対応OSWindows 2000 以降

シグネチャ

// SETUPAPI.dll  (Unicode / -W)
#include <windows.h>

BOOL SetupDiClassNameFromGuidExW(
    const GUID* ClassGuid,
    LPWSTR ClassName,
    DWORD ClassNameSize,
    DWORD* RequiredSize,   // optional
    LPCWSTR MachineName,   // optional
    void* Reserved   // optional
);

パラメーター

名前	型	方向	説明
ClassGuid	GUID*	in	クラス名を求める対象のセットアップクラスGUID。
ClassName	LPWSTR	out	クラス名を受け取るバッファ(Unicode)。
ClassNameSize	DWORD	in	ClassNameバッファの文字数。終端NUL含む。
RequiredSize	DWORD*	outoptional	クラス名に必要な文字数を受け取るポインタ。不足判定に使う。NULL可。
MachineName	LPCWSTR	inoptional	対象リモートコンピュータ名(Unicode)。NULL指定でローカルマシンを対象とする。
Reserved	void*	optional	予約済み。NULLを指定する。

戻り値の型: BOOL

各言語での呼び出し定義

// SETUPAPI.dll  (Unicode / -W)
#include <windows.h>

BOOL SetupDiClassNameFromGuidExW(
    const GUID* ClassGuid,
    LPWSTR ClassName,
    DWORD ClassNameSize,
    DWORD* RequiredSize,   // optional
    LPCWSTR MachineName,   // optional
    void* Reserved   // optional
);

[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("SETUPAPI.dll", CharSet = CharSet.Unicode, SetLastError = true, ExactSpelling = true)]
static extern bool SetupDiClassNameFromGuidExW(
    ref Guid ClassGuid,   // GUID*
    [MarshalAs(UnmanagedType.LPWStr)] System.Text.StringBuilder ClassName,   // LPWSTR out
    uint ClassNameSize,   // DWORD
    IntPtr RequiredSize,   // DWORD* optional, out
    [MarshalAs(UnmanagedType.LPWStr)] string MachineName,   // LPCWSTR optional
    IntPtr Reserved   // void* optional
);

<DllImport("SETUPAPI.dll", CharSet:=CharSet.Unicode, SetLastError:=True, ExactSpelling:=True)>
Public Shared Function SetupDiClassNameFromGuidExW(
    ByRef ClassGuid As Guid,   ' GUID*
    <MarshalAs(UnmanagedType.LPWStr)> ClassName As System.Text.StringBuilder,   ' LPWSTR out
    ClassNameSize As UInteger,   ' DWORD
    RequiredSize As IntPtr,   ' DWORD* optional, out
    <MarshalAs(UnmanagedType.LPWStr)> MachineName As String,   ' LPCWSTR optional
    Reserved As IntPtr   ' void* optional
) As <MarshalAs(UnmanagedType.Bool)> Boolean
End Function

' ClassGuid : GUID*
' ClassName : LPWSTR out
' ClassNameSize : DWORD
' RequiredSize : DWORD* optional, out
' MachineName : LPCWSTR optional
' Reserved : void* optional
Declare PtrSafe Function SetupDiClassNameFromGuidExW Lib "setupapi" ( _
    ByVal ClassGuid As LongPtr, _
    ByVal ClassName As LongPtr, _
    ByVal ClassNameSize As Long, _
    ByVal RequiredSize As LongPtr, _
    ByVal MachineName As LongPtr, _
    ByVal Reserved As LongPtr) As Long
' Unicode(W): 文字列は ByVal As LongPtr とし StrPtr(unicodeStr) を渡す
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

SetupDiClassNameFromGuidExW = ctypes.windll.setupapi.SetupDiClassNameFromGuidExW
SetupDiClassNameFromGuidExW.restype = wintypes.BOOL
SetupDiClassNameFromGuidExW.argtypes = [
    ctypes.c_void_p,  # ClassGuid : GUID*
    wintypes.LPWSTR,  # ClassName : LPWSTR out
    wintypes.DWORD,  # ClassNameSize : DWORD
    ctypes.POINTER(wintypes.DWORD),  # RequiredSize : DWORD* optional, out
    wintypes.LPCWSTR,  # MachineName : LPCWSTR optional
    ctypes.POINTER(None),  # Reserved : void* optional
]
# GetLastError: use ctypes.GetLastError() (or ctypes.WinDLL(use_last_error=True))

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('SETUPAPI.dll')
SetupDiClassNameFromGuidExW = Fiddle::Function.new(
  lib['SetupDiClassNameFromGuidExW'],
  [
    Fiddle::TYPE_VOIDP,  # ClassGuid : GUID*
    Fiddle::TYPE_VOIDP,  # ClassName : LPWSTR out
    -Fiddle::TYPE_INT,  # ClassNameSize : DWORD
    Fiddle::TYPE_VOIDP,  # RequiredSize : DWORD* optional, out
    Fiddle::TYPE_VOIDP,  # MachineName : LPCWSTR optional
    Fiddle::TYPE_VOIDP,  # Reserved : void* optional
  ],
  Fiddle::TYPE_INT)
# Wide strings: pass str.encode("UTF-16LE") + "\x00\x00"

#[link(name = "setupapi")]
extern "system" {
    fn SetupDiClassNameFromGuidExW(
        ClassGuid: *const GUID,  // GUID*
        ClassName: *mut u16,  // LPWSTR out
        ClassNameSize: u32,  // DWORD
        RequiredSize: *mut u32,  // DWORD* optional, out
        MachineName: *const u16,  // LPCWSTR optional
        Reserved: *mut ()  // void* optional
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[return: MarshalAs(UnmanagedType.Bool)]
[DllImport("SETUPAPI.dll", CharSet = CharSet.Unicode, SetLastError = true)]
public static extern bool SetupDiClassNameFromGuidExW(ref Guid ClassGuid, [MarshalAs(UnmanagedType.LPWStr)] System.Text.StringBuilder ClassName, uint ClassNameSize, IntPtr RequiredSize, [MarshalAs(UnmanagedType.LPWStr)] string MachineName, IntPtr Reserved);
"@
$api = Add-Type -MemberDefinition $sig -Name 'SETUPAPI_SetupDiClassNameFromGuidExW' -Namespace Win32 -PassThru
# $api::SetupDiClassNameFromGuidExW(ClassGuid, ClassName, ClassNameSize, RequiredSize, MachineName, Reserved)

#uselib "SETUPAPI.dll"
#func global SetupDiClassNameFromGuidExW "SetupDiClassNameFromGuidExW" wptr, wptr, wptr, wptr, wptr, wptr
; SetupDiClassNameFromGuidExW varptr(ClassGuid), varptr(ClassName), ClassNameSize, varptr(RequiredSize), MachineName, Reserved   ; 戻り値は stat
; ClassGuid : GUID* -> "wptr"
; ClassName : LPWSTR out -> "wptr"
; ClassNameSize : DWORD -> "wptr"
; RequiredSize : DWORD* optional, out -> "wptr"
; MachineName : LPCWSTR optional -> "wptr"
; Reserved : void* optional -> "wptr"
; ※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 "SETUPAPI.dll"
#cfunc global SetupDiClassNameFromGuidExW "SetupDiClassNameFromGuidExW" var, var, int, var, wstr, sptr
; res = SetupDiClassNameFromGuidExW(ClassGuid, ClassName, ClassNameSize, RequiredSize, MachineName, Reserved)
; ClassGuid : GUID* -> "var"
; ClassName : LPWSTR out -> "var"
; ClassNameSize : DWORD -> "int"
; RequiredSize : DWORD* optional, out -> "var"
; MachineName : LPCWSTR optional -> "wstr"
; Reserved : void* optional -> "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。#uselib "SETUPAPI.dll"
#cfunc global SetupDiClassNameFromGuidExW "SetupDiClassNameFromGuidExW" sptr, sptr, int, sptr, wstr, sptr
; res = SetupDiClassNameFromGuidExW(varptr(ClassGuid), varptr(ClassName), ClassNameSize, varptr(RequiredSize), MachineName, Reserved)
; ClassGuid : GUID* -> "sptr"
; ClassName : LPWSTR out -> "sptr"
; ClassNameSize : DWORD -> "int"
; RequiredSize : DWORD* optional, out -> "sptr"
; MachineName : LPCWSTR optional -> "wstr"
; Reserved : void* optional -> "sptr"
; ※出力/バッファ引数はポインタ方式(token=sptr / 呼び出しは varptr(変数))。

出力引数:

; BOOL SetupDiClassNameFromGuidExW(GUID* ClassGuid, LPWSTR ClassName, DWORD ClassNameSize, DWORD* RequiredSize, LPCWSTR MachineName, void* Reserved)
#uselib "SETUPAPI.dll"
#cfunc global SetupDiClassNameFromGuidExW "SetupDiClassNameFromGuidExW" var, var, int, var, wstr, intptr
; res = SetupDiClassNameFromGuidExW(ClassGuid, ClassName, ClassNameSize, RequiredSize, MachineName, Reserved)
; ClassGuid : GUID* -> "var"
; ClassName : LPWSTR out -> "var"
; ClassNameSize : DWORD -> "int"
; RequiredSize : DWORD* optional, out -> "var"
; MachineName : LPCWSTR optional -> "wstr"
; Reserved : void* optional -> "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。; BOOL SetupDiClassNameFromGuidExW(GUID* ClassGuid, LPWSTR ClassName, DWORD ClassNameSize, DWORD* RequiredSize, LPCWSTR MachineName, void* Reserved)
#uselib "SETUPAPI.dll"
#cfunc global SetupDiClassNameFromGuidExW "SetupDiClassNameFromGuidExW" intptr, intptr, int, intptr, wstr, intptr
; res = SetupDiClassNameFromGuidExW(varptr(ClassGuid), varptr(ClassName), ClassNameSize, varptr(RequiredSize), MachineName, Reserved)
; ClassGuid : GUID* -> "intptr"
; ClassName : LPWSTR out -> "intptr"
; ClassNameSize : DWORD -> "int"
; RequiredSize : DWORD* optional, out -> "intptr"
; MachineName : LPCWSTR optional -> "wstr"
; Reserved : void* optional -> "intptr"
; ※出力/バッファ引数はポインタ方式(token=intptr / 呼び出しは varptr(変数))。

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

var (
	setupapi = windows.NewLazySystemDLL("SETUPAPI.dll")
	procSetupDiClassNameFromGuidExW = setupapi.NewProc("SetupDiClassNameFromGuidExW")
)

// ClassGuid (GUID*), ClassName (LPWSTR out), ClassNameSize (DWORD), RequiredSize (DWORD* optional, out), MachineName (LPCWSTR optional), Reserved (void* optional)
r1, _, err := procSetupDiClassNameFromGuidExW.Call(
	uintptr(ClassGuid),
	uintptr(ClassName),
	uintptr(ClassNameSize),
	uintptr(RequiredSize),
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(MachineName))),
	uintptr(Reserved),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // BOOL

function SetupDiClassNameFromGuidExW(
  ClassGuid: PGUID;   // GUID*
  ClassName: PWideChar;   // LPWSTR out
  ClassNameSize: DWORD;   // DWORD
  RequiredSize: Pointer;   // DWORD* optional, out
  MachineName: PWideChar;   // LPCWSTR optional
  Reserved: Pointer   // void* optional
): BOOL; stdcall;
  external 'SETUPAPI.dll' name 'SetupDiClassNameFromGuidExW';

result := DllCall("SETUPAPI\SetupDiClassNameFromGuidExW"
    , "Ptr", ClassGuid   ; GUID*
    , "Ptr", ClassName   ; LPWSTR out
    , "UInt", ClassNameSize   ; DWORD
    , "Ptr", RequiredSize   ; DWORD* optional, out
    , "WStr", MachineName   ; LPCWSTR optional
    , "Ptr", Reserved   ; void* optional
    , "Int")   ; return: BOOL

●SetupDiClassNameFromGuidExW(ClassGuid, ClassName, ClassNameSize, RequiredSize, MachineName, Reserved) = DLL("SETUPAPI.dll", "bool SetupDiClassNameFromGuidExW(void*, char*, dword, void*, char*, void*)")
# 呼び出し: SetupDiClassNameFromGuidExW(ClassGuid, ClassName, ClassNameSize, RequiredSize, MachineName, Reserved)
# ClassGuid : GUID* -> "void*"
# ClassName : LPWSTR out -> "char*"
# ClassNameSize : DWORD -> "dword"
# RequiredSize : DWORD* optional, out -> "void*"
# MachineName : LPCWSTR optional -> "char*"
# Reserved : void* optional -> "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)。
# ※-W(Unicode)関数。なでしこ1はANSIのため -A 版の利用を推奨。

const std = @import("std");

extern "setupapi" fn SetupDiClassNameFromGuidExW(
    ClassGuid: [*c]GUID, // GUID*
    ClassName: [*c]u16, // LPWSTR out
    ClassNameSize: u32, // DWORD
    RequiredSize: [*c]u32, // DWORD* optional, out
    MachineName: [*c]const u16, // LPCWSTR optional
    Reserved: ?*anyopaque // void* optional
) callconv(std.os.windows.WINAPI) i32;
// Unicode(-W): UTF-16LE のヌル終端バッファ([*c]const u16)を渡す。

proc SetupDiClassNameFromGuidExW(
    ClassGuid: ptr GUID,  # GUID*
    ClassName: ptr uint16,  # LPWSTR out
    ClassNameSize: uint32,  # DWORD
    RequiredSize: ptr uint32,  # DWORD* optional, out
    MachineName: WideCString,  # LPCWSTR optional
    Reserved: pointer  # void* optional
): int32 {.importc: "SetupDiClassNameFromGuidExW", stdcall, dynlib: "SETUPAPI.dll".}
# Unicode(-W): WideCString は newWideCString("...") で生成。

pragma(lib, "setupapi");
extern(Windows)
int SetupDiClassNameFromGuidExW(
    GUID* ClassGuid,   // GUID*
    wchar* ClassName,   // LPWSTR out
    uint ClassNameSize,   // DWORD
    uint* RequiredSize,   // DWORD* optional, out
    const(wchar)* MachineName,   // LPCWSTR optional
    void* Reserved   // void* optional
);

ccall((:SetupDiClassNameFromGuidExW, "SETUPAPI.dll"), stdcall, Int32,
      (Ptr{GUID}, Ptr{UInt16}, UInt32, Ptr{UInt32}, Cwstring, Ptr{Cvoid}),
      ClassGuid, ClassName, ClassNameSize, RequiredSize, MachineName, Reserved)
# ClassGuid : GUID* -> Ptr{GUID}
# ClassName : LPWSTR out -> Ptr{UInt16}
# ClassNameSize : DWORD -> UInt32
# RequiredSize : DWORD* optional, out -> Ptr{UInt32}
# MachineName : LPCWSTR optional -> Cwstring
# Reserved : void* optional -> Ptr{Cvoid}
# stdcall は 32bit のみ意味を持つ(x64 では無視)。
# Unicode(-W): Cwstring には transcode(UInt16, "...") 等で UTF-16 を渡す。

local ffi = require("ffi")
ffi.cdef[[
int32_t SetupDiClassNameFromGuidExW(
    void* ClassGuid,
    uint16_t* ClassName,
    uint32_t ClassNameSize,
    uint32_t* RequiredSize,
    const uint16_t* MachineName,
    void* Reserved);
]]
local setupapi = ffi.load("setupapi")
-- setupapi.SetupDiClassNameFromGuidExW(ClassGuid, ClassName, ClassNameSize, RequiredSize, MachineName, Reserved)
-- ClassGuid : GUID*
-- ClassName : LPWSTR out
-- ClassNameSize : DWORD
-- RequiredSize : DWORD* optional, out
-- MachineName : LPCWSTR optional
-- Reserved : void* optional
-- 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。
-- Unicode(-W): uint16_t* には UTF-16LE のバッファ(ffi.new("uint16_t[?]", ...))を渡す。

const koffi = require('koffi');
const lib = koffi.load('SETUPAPI.dll');
const SetupDiClassNameFromGuidExW = lib.func('__stdcall', 'SetupDiClassNameFromGuidExW', 'int32_t', ['void *', 'uint16_t *', 'uint32_t', 'uint32_t *', 'str16', 'void *']);
// SetupDiClassNameFromGuidExW(ClassGuid, ClassName, ClassNameSize, RequiredSize, MachineName, Reserved)
// ClassGuid : GUID* -> 'void *'
// ClassName : LPWSTR out -> 'uint16_t *'
// ClassNameSize : DWORD -> 'uint32_t'
// RequiredSize : DWORD* optional, out -> 'uint32_t *'
// MachineName : LPCWSTR optional -> 'str16'
// Reserved : void* optional -> '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("SETUPAPI.dll", {
  SetupDiClassNameFromGuidExW: { parameters: ["pointer", "buffer", "u32", "pointer", "buffer", "pointer"], result: "i32" },
});
// lib.symbols.SetupDiClassNameFromGuidExW(ClassGuid, ClassName, ClassNameSize, RequiredSize, MachineName, Reserved)
// ClassGuid : GUID* -> "pointer"
// ClassName : LPWSTR out -> "buffer"
// ClassNameSize : DWORD -> "u32"
// RequiredSize : DWORD* optional, out -> "pointer"
// MachineName : LPCWSTR optional -> "buffer"
// Reserved : void* optional -> "pointer"
// 文字列は "buffer"。Unicode(-W) は new TextEncoder() ではなく UTF-16LE のバイト列(末尾に \x00\x00)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 SetupDiClassNameFromGuidExW(
    void* ClassGuid,
    uint16_t* ClassName,
    uint32_t ClassNameSize,
    uint32_t* RequiredSize,
    const uint16_t* MachineName,
    void* Reserved);
C, "SETUPAPI.dll");
// $ffi->SetupDiClassNameFromGuidExW(ClassGuid, ClassName, ClassNameSize, RequiredSize, MachineName, Reserved);
// ClassGuid : GUID*
// ClassName : LPWSTR out
// ClassNameSize : DWORD
// RequiredSize : DWORD* optional, out
// MachineName : LPCWSTR optional
// Reserved : void* optional
// 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 Setupapi extends StdCallLibrary {
    Setupapi INSTANCE = Native.load("setupapi", Setupapi.class, W32APIOptions.UNICODE_OPTIONS);
    boolean SetupDiClassNameFromGuidExW(
        Pointer ClassGuid,   // GUID*
        char[] ClassName,   // LPWSTR out
        int ClassNameSize,   // DWORD
        IntByReference RequiredSize,   // DWORD* optional, out
        WString MachineName,   // LPCWSTR optional
        Pointer Reserved   // void* optional
    );
}
// Unicode(-W): WString(入力)/char[](出力)で UTF-16 をマーシャリング。

@[Link("setupapi")]
lib LibSETUPAPI
  fun SetupDiClassNameFromGuidExW = SetupDiClassNameFromGuidExW(
    ClassGuid : GUID*,   # GUID*
    ClassName : UInt16*,   # LPWSTR out
    ClassNameSize : UInt32,   # DWORD
    RequiredSize : UInt32*,   # DWORD* optional, out
    MachineName : UInt16*,   # LPCWSTR optional
    Reserved : Void*   # void* optional
  ) : 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 SetupDiClassNameFromGuidExWNative = Int32 Function(Pointer<Void>, Pointer<Utf16>, Uint32, Pointer<Uint32>, Pointer<Utf16>, Pointer<Void>);
typedef SetupDiClassNameFromGuidExWDart = int Function(Pointer<Void>, Pointer<Utf16>, int, Pointer<Uint32>, Pointer<Utf16>, Pointer<Void>);
final SetupDiClassNameFromGuidExW = DynamicLibrary.open('SETUPAPI.dll')
    .lookupFunction<SetupDiClassNameFromGuidExWNative, SetupDiClassNameFromGuidExWDart>('SetupDiClassNameFromGuidExW');
// ClassGuid : GUID* -> Pointer<Void>
// ClassName : LPWSTR out -> Pointer<Utf16>
// ClassNameSize : DWORD -> Uint32
// RequiredSize : DWORD* optional, out -> Pointer<Uint32>
// MachineName : LPCWSTR optional -> Pointer<Utf16>
// Reserved : void* optional -> Pointer<Void>
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。

{$mode objfpc}{$H+}
function SetupDiClassNameFromGuidExW(
  ClassGuid: PGUID;   // GUID*
  ClassName: PWideChar;   // LPWSTR out
  ClassNameSize: DWORD;   // DWORD
  RequiredSize: Pointer;   // DWORD* optional, out
  MachineName: PWideChar;   // LPCWSTR optional
  Reserved: Pointer   // void* optional
): BOOL; stdcall;
  external 'SETUPAPI.dll' name 'SetupDiClassNameFromGuidExW';

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

foreign import stdcall safe "SetupDiClassNameFromGuidExW"
  c_SetupDiClassNameFromGuidExW :: Ptr () -> CWString -> Word32 -> Ptr Word32 -> CWString -> Ptr () -> IO CInt
-- ClassGuid : GUID* -> Ptr ()
-- ClassName : LPWSTR out -> CWString
-- ClassNameSize : DWORD -> Word32
-- RequiredSize : DWORD* optional, out -> Ptr Word32
-- MachineName : LPCWSTR optional -> CWString
-- Reserved : void* optional -> 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 setupdiclassnamefromguidexw =
  foreign "SetupDiClassNameFromGuidExW"
    ((ptr void) @-> (ptr uint16_t) @-> uint32_t @-> (ptr uint32_t) @-> (ptr uint16_t) @-> (ptr void) @-> returning int32_t)
(* ClassGuid : GUID* -> (ptr void) *)
(* ClassName : LPWSTR out -> (ptr uint16_t) *)
(* ClassNameSize : DWORD -> uint32_t *)
(* RequiredSize : DWORD* optional, out -> (ptr uint32_t) *)
(* MachineName : LPCWSTR optional -> (ptr uint16_t) *)
(* Reserved : void* optional -> (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 setupapi (t "SETUPAPI.dll"))
(cffi:use-foreign-library setupapi)

(cffi:defcfun ("SetupDiClassNameFromGuidExW" setup-di-class-name-from-guid-ex-w :convention :stdcall) :int32
  (class-guid :pointer)   ; GUID*
  (class-name :pointer)   ; LPWSTR out
  (class-name-size :uint32)   ; DWORD
  (required-size :pointer)   ; DWORD* optional, out
  (machine-name (:string :encoding :utf-16le))   ; LPCWSTR optional
  (reserved :pointer))   ; void* optional
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。

use Win32::API;
my $SetupDiClassNameFromGuidExW = Win32::API::More->new('SETUPAPI',
    'BOOL SetupDiClassNameFromGuidExW(LPVOID ClassGuid, LPWSTR ClassName, DWORD ClassNameSize, LPVOID RequiredSize, LPCWSTR MachineName, LPVOID Reserved)');
# my $ret = $SetupDiClassNameFromGuidExW->Call($ClassGuid, $ClassName, $ClassNameSize, $RequiredSize, $MachineName, $Reserved);
# ClassGuid : GUID* -> LPVOID
# ClassName : LPWSTR out -> LPWSTR
# ClassNameSize : DWORD -> DWORD
# RequiredSize : DWORD* optional, out -> LPVOID
# MachineName : LPCWSTR optional -> LPCWSTR
# Reserved : void* optional -> LPVOID
# 値渡し構造体は pack() した文字列、または Win32::API::Struct を使用。
# Unicode(-W): LPCWSTR/LPWSTR は Win32::API が UTF-16 変換を行う。

SetupDiClassNameFromGuidExW

シグネチャ

パラメーター

各言語での呼び出し定義

関連項目