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SetupDiGetClassRegistryPropertyW

関数
指定したデバイスセットアップクラスのレジストリプロパティを取得する。
DLLSETUPAPI.dll文字セットUnicode (-W)呼出規約winapiSetLastErrorあり対応OSWindows XP 以降
📘 Microsoft Learn (日本語) · English

シグネチャ

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

BOOL SetupDiGetClassRegistryPropertyW(
    const GUID* ClassGuid,
    DWORD Property,
    DWORD* PropertyRegDataType,   // optional
    BYTE* PropertyBuffer,
    DWORD PropertyBufferSize,
    DWORD* RequiredSize,   // optional
    LPCWSTR MachineName,   // optional
    void* Reserved   // optional
);

パラメーター

名前型方向説明
ClassGuidGUID*inレジストリプロパティを取得する対象クラスのGUID。
PropertyDWORDin取得するクラスプロパティの種別。SPCRP_*値を指定する。
PropertyRegDataTypeDWORD*outoptional値のレジストリデータ型(REG_SZ等)を受け取るポインタ。NULL可。
PropertyBufferBYTE*outプロパティ値を受け取るバッファ(Unicode)。サイズ照会時はNULL可。
PropertyBufferSizeDWORDinPropertyBufferのバイトサイズ。
RequiredSizeDWORD*outoptional値に必要なバイト数を受け取るポインタ。不足判定に使う。NULL可。
MachineNameLPCWSTRinoptional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。
Reservedvoid*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 SetupDiGetClassRegistryPropertyW(
    const GUID* ClassGuid,
    DWORD Property,
    DWORD* PropertyRegDataType,   // optional
    BYTE* PropertyBuffer,
    DWORD PropertyBufferSize,
    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 SetupDiGetClassRegistryPropertyW(
    ref Guid ClassGuid,   // GUID*
    uint Property,   // DWORD
    IntPtr PropertyRegDataType,   // DWORD* optional, out
    IntPtr PropertyBuffer,   // BYTE* out
    uint PropertyBufferSize,   // 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 SetupDiGetClassRegistryPropertyW(
    ByRef ClassGuid As Guid,   ' GUID*
    [Property] As UInteger,   ' DWORD
    PropertyRegDataType As IntPtr,   ' DWORD* optional, out
    PropertyBuffer As IntPtr,   ' BYTE* out
    PropertyBufferSize 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*
' Property : DWORD
' PropertyRegDataType : DWORD* optional, out
' PropertyBuffer : BYTE* out
' PropertyBufferSize : DWORD
' RequiredSize : DWORD* optional, out
' MachineName : LPCWSTR optional
' Reserved : void* optional
Declare PtrSafe Function SetupDiGetClassRegistryPropertyW Lib "setupapi" ( _
    ByVal ClassGuid As LongPtr, _
    ByVal Property As Long, _
    ByVal PropertyRegDataType As LongPtr, _
    ByVal PropertyBuffer As LongPtr, _
    ByVal PropertyBufferSize 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

SetupDiGetClassRegistryPropertyW = ctypes.windll.setupapi.SetupDiGetClassRegistryPropertyW
SetupDiGetClassRegistryPropertyW.restype = wintypes.BOOL
SetupDiGetClassRegistryPropertyW.argtypes = [
    ctypes.c_void_p,  # ClassGuid : GUID*
    wintypes.DWORD,  # Property : DWORD
    ctypes.POINTER(wintypes.DWORD),  # PropertyRegDataType : DWORD* optional, out
    ctypes.POINTER(ctypes.c_ubyte),  # PropertyBuffer : BYTE* out
    wintypes.DWORD,  # PropertyBufferSize : 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')
SetupDiGetClassRegistryPropertyW = Fiddle::Function.new(
  lib['SetupDiGetClassRegistryPropertyW'],
  [
    Fiddle::TYPE_VOIDP,  # ClassGuid : GUID*
    -Fiddle::TYPE_INT,  # Property : DWORD
    Fiddle::TYPE_VOIDP,  # PropertyRegDataType : DWORD* optional, out
    Fiddle::TYPE_VOIDP,  # PropertyBuffer : BYTE* out
    -Fiddle::TYPE_INT,  # PropertyBufferSize : 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 SetupDiGetClassRegistryPropertyW(
        ClassGuid: *const GUID,  // GUID*
        Property: u32,  // DWORD
        PropertyRegDataType: *mut u32,  // DWORD* optional, out
        PropertyBuffer: *mut u8,  // BYTE* out
        PropertyBufferSize: 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 SetupDiGetClassRegistryPropertyW(ref Guid ClassGuid, uint Property, IntPtr PropertyRegDataType, IntPtr PropertyBuffer, uint PropertyBufferSize, IntPtr RequiredSize, [MarshalAs(UnmanagedType.LPWStr)] string MachineName, IntPtr Reserved);
"@
$api = Add-Type -MemberDefinition $sig -Name 'SETUPAPI_SetupDiGetClassRegistryPropertyW' -Namespace Win32 -PassThru
# $api::SetupDiGetClassRegistryPropertyW(ClassGuid, Property, PropertyRegDataType, PropertyBuffer, PropertyBufferSize, RequiredSize, MachineName, Reserved)
#uselib "SETUPAPI.dll"
#func global SetupDiGetClassRegistryPropertyW "SetupDiGetClassRegistryPropertyW" wptr, wptr, wptr, wptr, wptr, wptr, wptr, wptr
; SetupDiGetClassRegistryPropertyW varptr(ClassGuid), Property, varptr(PropertyRegDataType), varptr(PropertyBuffer), PropertyBufferSize, varptr(RequiredSize), MachineName, Reserved   ; 戻り値は stat
; ClassGuid : GUID* -> "wptr"
; Property : DWORD -> "wptr"
; PropertyRegDataType : DWORD* optional, out -> "wptr"
; PropertyBuffer : BYTE* out -> "wptr"
; PropertyBufferSize : 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 SetupDiGetClassRegistryPropertyW "SetupDiGetClassRegistryPropertyW" var, int, var, var, int, var, wstr, sptr
; res = SetupDiGetClassRegistryPropertyW(ClassGuid, Property, PropertyRegDataType, PropertyBuffer, PropertyBufferSize, RequiredSize, MachineName, Reserved)
; ClassGuid : GUID* -> "var"
; Property : DWORD -> "int"
; PropertyRegDataType : DWORD* optional, out -> "var"
; PropertyBuffer : BYTE* out -> "var"
; PropertyBufferSize : 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。
出力引数: 
; BOOL SetupDiGetClassRegistryPropertyW(GUID* ClassGuid, DWORD Property, DWORD* PropertyRegDataType, BYTE* PropertyBuffer, DWORD PropertyBufferSize, DWORD* RequiredSize, LPCWSTR MachineName, void* Reserved)
#uselib "SETUPAPI.dll"
#cfunc global SetupDiGetClassRegistryPropertyW "SetupDiGetClassRegistryPropertyW" var, int, var, var, int, var, wstr, intptr
; res = SetupDiGetClassRegistryPropertyW(ClassGuid, Property, PropertyRegDataType, PropertyBuffer, PropertyBufferSize, RequiredSize, MachineName, Reserved)
; ClassGuid : GUID* -> "var"
; Property : DWORD -> "int"
; PropertyRegDataType : DWORD* optional, out -> "var"
; PropertyBuffer : BYTE* out -> "var"
; PropertyBufferSize : 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。
import (
	"golang.org/x/sys/windows"
	"unsafe"
)

var (
	setupapi = windows.NewLazySystemDLL("SETUPAPI.dll")
	procSetupDiGetClassRegistryPropertyW = setupapi.NewProc("SetupDiGetClassRegistryPropertyW")
)

// ClassGuid (GUID*), Property (DWORD), PropertyRegDataType (DWORD* optional, out), PropertyBuffer (BYTE* out), PropertyBufferSize (DWORD), RequiredSize (DWORD* optional, out), MachineName (LPCWSTR optional), Reserved (void* optional)
r1, _, err := procSetupDiGetClassRegistryPropertyW.Call(
	uintptr(ClassGuid),
	uintptr(Property),
	uintptr(PropertyRegDataType),
	uintptr(PropertyBuffer),
	uintptr(PropertyBufferSize),
	uintptr(RequiredSize),
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(MachineName))),
	uintptr(Reserved),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // BOOL
function SetupDiGetClassRegistryPropertyW(
  ClassGuid: PGUID;   // GUID*
  Property: DWORD;   // DWORD
  PropertyRegDataType: Pointer;   // DWORD* optional, out
  PropertyBuffer: Pointer;   // BYTE* out
  PropertyBufferSize: DWORD;   // DWORD
  RequiredSize: Pointer;   // DWORD* optional, out
  MachineName: PWideChar;   // LPCWSTR optional
  Reserved: Pointer   // void* optional
): BOOL; stdcall;
  external 'SETUPAPI.dll' name 'SetupDiGetClassRegistryPropertyW';
result := DllCall("SETUPAPI\SetupDiGetClassRegistryPropertyW"
    , "Ptr", ClassGuid   ; GUID*
    , "UInt", Property   ; DWORD
    , "Ptr", PropertyRegDataType   ; DWORD* optional, out
    , "Ptr", PropertyBuffer   ; BYTE* out
    , "UInt", PropertyBufferSize   ; DWORD
    , "Ptr", RequiredSize   ; DWORD* optional, out
    , "WStr", MachineName   ; LPCWSTR optional
    , "Ptr", Reserved   ; void* optional
    , "Int")   ; return: BOOL
●SetupDiGetClassRegistryPropertyW(ClassGuid, Property, PropertyRegDataType, PropertyBuffer, PropertyBufferSize, RequiredSize, MachineName, Reserved) = DLL("SETUPAPI.dll", "bool SetupDiGetClassRegistryPropertyW(void*, dword, void*, void*, dword, void*, char*, void*)")
# 呼び出し: SetupDiGetClassRegistryPropertyW(ClassGuid, Property, PropertyRegDataType, PropertyBuffer, PropertyBufferSize, RequiredSize, MachineName, Reserved)
# ClassGuid : GUID* -> "void*"
# Property : DWORD -> "dword"
# PropertyRegDataType : DWORD* optional, out -> "void*"
# PropertyBuffer : BYTE* out -> "void*"
# PropertyBufferSize : 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 SetupDiGetClassRegistryPropertyW(
    ClassGuid: [*c]GUID, // GUID*
    Property: u32, // DWORD
    PropertyRegDataType: [*c]u32, // DWORD* optional, out
    PropertyBuffer: [*c]u8, // BYTE* out
    PropertyBufferSize: 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 SetupDiGetClassRegistryPropertyW(
    ClassGuid: ptr GUID,  # GUID*
    Property: uint32,  # DWORD
    PropertyRegDataType: ptr uint32,  # DWORD* optional, out
    PropertyBuffer: ptr uint8,  # BYTE* out
    PropertyBufferSize: uint32,  # DWORD
    RequiredSize: ptr uint32,  # DWORD* optional, out
    MachineName: WideCString,  # LPCWSTR optional
    Reserved: pointer  # void* optional
): int32 {.importc: "SetupDiGetClassRegistryPropertyW", stdcall, dynlib: "SETUPAPI.dll".}
# Unicode(-W): WideCString は newWideCString("...") で生成。
pragma(lib, "setupapi");
extern(Windows)
int SetupDiGetClassRegistryPropertyW(
    GUID* ClassGuid,   // GUID*
    uint Property,   // DWORD
    uint* PropertyRegDataType,   // DWORD* optional, out
    ubyte* PropertyBuffer,   // BYTE* out
    uint PropertyBufferSize,   // DWORD
    uint* RequiredSize,   // DWORD* optional, out
    const(wchar)* MachineName,   // LPCWSTR optional
    void* Reserved   // void* optional
);
ccall((:SetupDiGetClassRegistryPropertyW, "SETUPAPI.dll"), stdcall, Int32,
      (Ptr{GUID}, UInt32, Ptr{UInt32}, Ptr{UInt8}, UInt32, Ptr{UInt32}, Cwstring, Ptr{Cvoid}),
      ClassGuid, Property, PropertyRegDataType, PropertyBuffer, PropertyBufferSize, RequiredSize, MachineName, Reserved)
# ClassGuid : GUID* -> Ptr{GUID}
# Property : DWORD -> UInt32
# PropertyRegDataType : DWORD* optional, out -> Ptr{UInt32}
# PropertyBuffer : BYTE* out -> Ptr{UInt8}
# PropertyBufferSize : 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 SetupDiGetClassRegistryPropertyW(
    void* ClassGuid,
    uint32_t Property,
    uint32_t* PropertyRegDataType,
    uint8_t* PropertyBuffer,
    uint32_t PropertyBufferSize,
    uint32_t* RequiredSize,
    const uint16_t* MachineName,
    void* Reserved);
]]
local setupapi = ffi.load("setupapi")
-- setupapi.SetupDiGetClassRegistryPropertyW(ClassGuid, Property, PropertyRegDataType, PropertyBuffer, PropertyBufferSize, RequiredSize, MachineName, Reserved)
-- ClassGuid : GUID*
-- Property : DWORD
-- PropertyRegDataType : DWORD* optional, out
-- PropertyBuffer : BYTE* out
-- PropertyBufferSize : 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 SetupDiGetClassRegistryPropertyW = lib.func('__stdcall', 'SetupDiGetClassRegistryPropertyW', 'int32_t', ['void *', 'uint32_t', 'uint32_t *', 'uint8_t *', 'uint32_t', 'uint32_t *', 'str16', 'void *']);
// SetupDiGetClassRegistryPropertyW(ClassGuid, Property, PropertyRegDataType, PropertyBuffer, PropertyBufferSize, RequiredSize, MachineName, Reserved)
// ClassGuid : GUID* -> 'void *'
// Property : DWORD -> 'uint32_t'
// PropertyRegDataType : DWORD* optional, out -> 'uint32_t *'
// PropertyBuffer : BYTE* out -> 'uint8_t *'
// PropertyBufferSize : 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", {
  SetupDiGetClassRegistryPropertyW: { parameters: ["pointer", "u32", "pointer", "pointer", "u32", "pointer", "buffer", "pointer"], result: "i32" },
});
// lib.symbols.SetupDiGetClassRegistryPropertyW(ClassGuid, Property, PropertyRegDataType, PropertyBuffer, PropertyBufferSize, RequiredSize, MachineName, Reserved)
// ClassGuid : GUID* -> "pointer"
// Property : DWORD -> "u32"
// PropertyRegDataType : DWORD* optional, out -> "pointer"
// PropertyBuffer : BYTE* out -> "pointer"
// PropertyBufferSize : 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 SetupDiGetClassRegistryPropertyW(
    void* ClassGuid,
    uint32_t Property,
    uint32_t* PropertyRegDataType,
    uint8_t* PropertyBuffer,
    uint32_t PropertyBufferSize,
    uint32_t* RequiredSize,
    const uint16_t* MachineName,
    void* Reserved);
C, "SETUPAPI.dll");
// $ffi->SetupDiGetClassRegistryPropertyW(ClassGuid, Property, PropertyRegDataType, PropertyBuffer, PropertyBufferSize, RequiredSize, MachineName, Reserved);
// ClassGuid : GUID*
// Property : DWORD
// PropertyRegDataType : DWORD* optional, out
// PropertyBuffer : BYTE* out
// PropertyBufferSize : 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 SetupDiGetClassRegistryPropertyW(
        Pointer ClassGuid,   // GUID*
        int Property,   // DWORD
        IntByReference PropertyRegDataType,   // DWORD* optional, out
        byte[] PropertyBuffer,   // BYTE* out
        int PropertyBufferSize,   // 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 SetupDiGetClassRegistryPropertyW = SetupDiGetClassRegistryPropertyW(
    ClassGuid : GUID*,   # GUID*
    Property : UInt32,   # DWORD
    PropertyRegDataType : UInt32*,   # DWORD* optional, out
    PropertyBuffer : UInt8*,   # BYTE* out
    PropertyBufferSize : 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 SetupDiGetClassRegistryPropertyWNative = Int32 Function(Pointer<Void>, Uint32, Pointer<Uint32>, Pointer<Uint8>, Uint32, Pointer<Uint32>, Pointer<Utf16>, Pointer<Void>);
typedef SetupDiGetClassRegistryPropertyWDart = int Function(Pointer<Void>, int, Pointer<Uint32>, Pointer<Uint8>, int, Pointer<Uint32>, Pointer<Utf16>, Pointer<Void>);
final SetupDiGetClassRegistryPropertyW = DynamicLibrary.open('SETUPAPI.dll')
    .lookupFunction<SetupDiGetClassRegistryPropertyWNative, SetupDiGetClassRegistryPropertyWDart>('SetupDiGetClassRegistryPropertyW');
// ClassGuid : GUID* -> Pointer<Void>
// Property : DWORD -> Uint32
// PropertyRegDataType : DWORD* optional, out -> Pointer<Uint32>
// PropertyBuffer : BYTE* out -> Pointer<Uint8>
// PropertyBufferSize : 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 SetupDiGetClassRegistryPropertyW(
  ClassGuid: PGUID;   // GUID*
  Property: DWORD;   // DWORD
  PropertyRegDataType: Pointer;   // DWORD* optional, out
  PropertyBuffer: Pointer;   // BYTE* out
  PropertyBufferSize: DWORD;   // DWORD
  RequiredSize: Pointer;   // DWORD* optional, out
  MachineName: PWideChar;   // LPCWSTR optional
  Reserved: Pointer   // void* optional
): BOOL; stdcall;
  external 'SETUPAPI.dll' name 'SetupDiGetClassRegistryPropertyW';
import Foreign
import Foreign.C.Types
import Foreign.C.String

foreign import stdcall safe "SetupDiGetClassRegistryPropertyW"
  c_SetupDiGetClassRegistryPropertyW :: Ptr () -> Word32 -> Ptr Word32 -> Ptr Word8 -> Word32 -> Ptr Word32 -> CWString -> Ptr () -> IO CInt
-- ClassGuid : GUID* -> Ptr ()
-- Property : DWORD -> Word32
-- PropertyRegDataType : DWORD* optional, out -> Ptr Word32
-- PropertyBuffer : BYTE* out -> Ptr Word8
-- PropertyBufferSize : 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 setupdigetclassregistrypropertyw =
  foreign "SetupDiGetClassRegistryPropertyW"
    ((ptr void) @-> uint32_t @-> (ptr uint32_t) @-> (ptr uint8_t) @-> uint32_t @-> (ptr uint32_t) @-> (ptr uint16_t) @-> (ptr void) @-> returning int32_t)
(* ClassGuid : GUID* -> (ptr void) *)
(* Property : DWORD -> uint32_t *)
(* PropertyRegDataType : DWORD* optional, out -> (ptr uint32_t) *)
(* PropertyBuffer : BYTE* out -> (ptr uint8_t) *)
(* PropertyBufferSize : 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 ("SetupDiGetClassRegistryPropertyW" setup-di-get-class-registry-property-w :convention :stdcall) :int32
  (class-guid :pointer)   ; GUID*
  (property :uint32)   ; DWORD
  (property-reg-data-type :pointer)   ; DWORD* optional, out
  (property-buffer :pointer)   ; BYTE* out
  (property-buffer-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 $SetupDiGetClassRegistryPropertyW = Win32::API::More->new('SETUPAPI',
    'BOOL SetupDiGetClassRegistryPropertyW(LPVOID ClassGuid, DWORD Property, LPVOID PropertyRegDataType, LPVOID PropertyBuffer, DWORD PropertyBufferSize, LPVOID RequiredSize, LPCWSTR MachineName, LPVOID Reserved)');
# my $ret = $SetupDiGetClassRegistryPropertyW->Call($ClassGuid, $Property, $PropertyRegDataType, $PropertyBuffer, $PropertyBufferSize, $RequiredSize, $MachineName, $Reserved);
# ClassGuid : GUID* -> LPVOID
# Property : DWORD -> DWORD
# PropertyRegDataType : DWORD* optional, out -> LPVOID
# PropertyBuffer : BYTE* out -> LPVOID
# PropertyBufferSize : 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。

関連項目

文字セット違い