SetupDiGetClassDevsW

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

HDEVINFO SetupDiGetClassDevsW(
    const GUID* ClassGuid,   // optional
    LPCWSTR Enumerator,   // optional
    HWND hwndParent,   // optional
    SETUP_DI_GET_CLASS_DEVS_FLAGS Flags
);

<DllImport("SETUPAPI.dll", CharSet:=CharSet.Unicode, SetLastError:=True, ExactSpelling:=True)>
Public Shared Function SetupDiGetClassDevsW(
    ClassGuid As IntPtr,   ' GUID* optional
    <MarshalAs(UnmanagedType.LPWStr)> Enumerator As String,   ' LPCWSTR optional
    hwndParent As IntPtr,   ' HWND optional
    Flags As UInteger   ' SETUP_DI_GET_CLASS_DEVS_FLAGS
) As IntPtr
End Function

' ClassGuid : GUID* optional
' Enumerator : LPCWSTR optional
' hwndParent : HWND optional
' Flags : SETUP_DI_GET_CLASS_DEVS_FLAGS
Declare PtrSafe Function SetupDiGetClassDevsW Lib "setupapi" ( _
    ByVal ClassGuid As LongPtr, _
    ByVal Enumerator As LongPtr, _
    ByVal hwndParent As LongPtr, _
    ByVal Flags As Long) As LongPtr
' 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

SetupDiGetClassDevsW = ctypes.windll.setupapi.SetupDiGetClassDevsW
SetupDiGetClassDevsW.restype = ctypes.c_ssize_t
SetupDiGetClassDevsW.argtypes = [
    ctypes.c_void_p,  # ClassGuid : GUID* optional
    wintypes.LPCWSTR,  # Enumerator : LPCWSTR optional
    wintypes.HANDLE,  # hwndParent : HWND optional
    wintypes.DWORD,  # Flags : SETUP_DI_GET_CLASS_DEVS_FLAGS
]
# GetLastError: use ctypes.GetLastError() (or ctypes.WinDLL(use_last_error=True))

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('SETUPAPI.dll')
SetupDiGetClassDevsW = Fiddle::Function.new(
  lib['SetupDiGetClassDevsW'],
  [
    Fiddle::TYPE_VOIDP,  # ClassGuid : GUID* optional
    Fiddle::TYPE_VOIDP,  # Enumerator : LPCWSTR optional
    Fiddle::TYPE_VOIDP,  # hwndParent : HWND optional
    -Fiddle::TYPE_INT,  # Flags : SETUP_DI_GET_CLASS_DEVS_FLAGS
  ],
  Fiddle::TYPE_INTPTR_T)
# Wide strings: pass str.encode("UTF-16LE") + "\x00\x00"

#[link(name = "setupapi")]
extern "system" {
    fn SetupDiGetClassDevsW(
        ClassGuid: *const GUID,  // GUID* optional
        Enumerator: *const u16,  // LPCWSTR optional
        hwndParent: *mut core::ffi::c_void,  // HWND optional
        Flags: u32  // SETUP_DI_GET_CLASS_DEVS_FLAGS
    ) -> isize;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("SETUPAPI.dll", CharSet = CharSet.Unicode, SetLastError = true)]
public static extern IntPtr SetupDiGetClassDevsW(IntPtr ClassGuid, [MarshalAs(UnmanagedType.LPWStr)] string Enumerator, IntPtr hwndParent, uint Flags);
"@
$api = Add-Type -MemberDefinition $sig -Name 'SETUPAPI_SetupDiGetClassDevsW' -Namespace Win32 -PassThru
# $api::SetupDiGetClassDevsW(ClassGuid, Enumerator, hwndParent, Flags)

#uselib "SETUPAPI.dll"
#func global SetupDiGetClassDevsW "SetupDiGetClassDevsW" wptr, wptr, wptr, wptr
; SetupDiGetClassDevsW varptr(ClassGuid), Enumerator, hwndParent, Flags   ; 戻り値は stat
; ClassGuid : GUID* optional -> "wptr"
; Enumerator : LPCWSTR optional -> "wptr"
; hwndParent : HWND optional -> "wptr"
; Flags : SETUP_DI_GET_CLASS_DEVS_FLAGS -> "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。

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

var (
	setupapi = windows.NewLazySystemDLL("SETUPAPI.dll")
	procSetupDiGetClassDevsW = setupapi.NewProc("SetupDiGetClassDevsW")
)

// ClassGuid (GUID* optional), Enumerator (LPCWSTR optional), hwndParent (HWND optional), Flags (SETUP_DI_GET_CLASS_DEVS_FLAGS)
r1, _, err := procSetupDiGetClassDevsW.Call(
	uintptr(ClassGuid),
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(Enumerator))),
	uintptr(hwndParent),
	uintptr(Flags),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HDEVINFO

function SetupDiGetClassDevsW(
  ClassGuid: PGUID;   // GUID* optional
  Enumerator: PWideChar;   // LPCWSTR optional
  hwndParent: THandle;   // HWND optional
  Flags: DWORD   // SETUP_DI_GET_CLASS_DEVS_FLAGS
): NativeInt; stdcall;
  external 'SETUPAPI.dll' name 'SetupDiGetClassDevsW';

result := DllCall("SETUPAPI\SetupDiGetClassDevsW"
    , "Ptr", ClassGuid   ; GUID* optional
    , "WStr", Enumerator   ; LPCWSTR optional
    , "Ptr", hwndParent   ; HWND optional
    , "UInt", Flags   ; SETUP_DI_GET_CLASS_DEVS_FLAGS
    , "Ptr")   ; return: HDEVINFO

●SetupDiGetClassDevsW(ClassGuid, Enumerator, hwndParent, Flags) = DLL("SETUPAPI.dll", "int SetupDiGetClassDevsW(void*, char*, void*, dword)")
# 呼び出し: SetupDiGetClassDevsW(ClassGuid, Enumerator, hwndParent, Flags)
# ClassGuid : GUID* optional -> "void*"
# Enumerator : LPCWSTR optional -> "char*"
# hwndParent : HWND optional -> "void*"
# Flags : SETUP_DI_GET_CLASS_DEVS_FLAGS -> "dword"
# 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 SetupDiGetClassDevsW(
    ClassGuid: [*c]GUID, // GUID* optional
    Enumerator: [*c]const u16, // LPCWSTR optional
    hwndParent: ?*anyopaque, // HWND optional
    Flags: u32 // SETUP_DI_GET_CLASS_DEVS_FLAGS
) callconv(std.os.windows.WINAPI) isize;
// Unicode(-W): UTF-16LE のヌル終端バッファ([*c]const u16)を渡す。

proc SetupDiGetClassDevsW(
    ClassGuid: ptr GUID,  # GUID* optional
    Enumerator: WideCString,  # LPCWSTR optional
    hwndParent: pointer,  # HWND optional
    Flags: uint32  # SETUP_DI_GET_CLASS_DEVS_FLAGS
): int {.importc: "SetupDiGetClassDevsW", stdcall, dynlib: "SETUPAPI.dll".}
# Unicode(-W): WideCString は newWideCString("...") で生成。

pragma(lib, "setupapi");
extern(Windows)
ptrdiff_t SetupDiGetClassDevsW(
    GUID* ClassGuid,   // GUID* optional
    const(wchar)* Enumerator,   // LPCWSTR optional
    void* hwndParent,   // HWND optional
    uint Flags   // SETUP_DI_GET_CLASS_DEVS_FLAGS
);

ccall((:SetupDiGetClassDevsW, "SETUPAPI.dll"), stdcall, Int,
      (Ptr{GUID}, Cwstring, Ptr{Cvoid}, UInt32),
      ClassGuid, Enumerator, hwndParent, Flags)
# ClassGuid : GUID* optional -> Ptr{GUID}
# Enumerator : LPCWSTR optional -> Cwstring
# hwndParent : HWND optional -> Ptr{Cvoid}
# Flags : SETUP_DI_GET_CLASS_DEVS_FLAGS -> UInt32
# 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[[
intptr_t SetupDiGetClassDevsW(
    void* ClassGuid,
    const uint16_t* Enumerator,
    void* hwndParent,
    uint32_t Flags);
]]
local setupapi = ffi.load("setupapi")
-- setupapi.SetupDiGetClassDevsW(ClassGuid, Enumerator, hwndParent, Flags)
-- ClassGuid : GUID* optional
-- Enumerator : LPCWSTR optional
-- hwndParent : HWND optional
-- Flags : SETUP_DI_GET_CLASS_DEVS_FLAGS
-- 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 SetupDiGetClassDevsW = lib.func('__stdcall', 'SetupDiGetClassDevsW', 'intptr_t', ['void *', 'str16', 'void *', 'uint32_t']);
// SetupDiGetClassDevsW(ClassGuid, Enumerator, hwndParent, Flags)
// ClassGuid : GUID* optional -> 'void *'
// Enumerator : LPCWSTR optional -> 'str16'
// hwndParent : HWND optional -> 'void *'
// Flags : SETUP_DI_GET_CLASS_DEVS_FLAGS -> 'uint32_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("SETUPAPI.dll", {
  SetupDiGetClassDevsW: { parameters: ["pointer", "buffer", "pointer", "u32"], result: "isize" },
});
// lib.symbols.SetupDiGetClassDevsW(ClassGuid, Enumerator, hwndParent, Flags)
// ClassGuid : GUID* optional -> "pointer"
// Enumerator : LPCWSTR optional -> "buffer"
// hwndParent : HWND optional -> "pointer"
// Flags : SETUP_DI_GET_CLASS_DEVS_FLAGS -> "u32"
// 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
intptr_t SetupDiGetClassDevsW(
    void* ClassGuid,
    const uint16_t* Enumerator,
    void* hwndParent,
    uint32_t Flags);
C, "SETUPAPI.dll");
// $ffi->SetupDiGetClassDevsW(ClassGuid, Enumerator, hwndParent, Flags);
// ClassGuid : GUID* optional
// Enumerator : LPCWSTR optional
// hwndParent : HWND optional
// Flags : SETUP_DI_GET_CLASS_DEVS_FLAGS
// 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);
    long SetupDiGetClassDevsW(
        Pointer ClassGuid,   // GUID* optional
        WString Enumerator,   // LPCWSTR optional
        Pointer hwndParent,   // HWND optional
        int Flags   // SETUP_DI_GET_CLASS_DEVS_FLAGS
    );
}
// Unicode(-W): WString(入力)/char[](出力)で UTF-16 をマーシャリング。

@[Link("setupapi")]
lib LibSETUPAPI
  fun SetupDiGetClassDevsW = SetupDiGetClassDevsW(
    ClassGuid : GUID*,   # GUID* optional
    Enumerator : UInt16*,   # LPCWSTR optional
    hwndParent : Void*,   # HWND optional
    Flags : UInt32   # SETUP_DI_GET_CLASS_DEVS_FLAGS
  ) : LibC::SSizeT
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 SetupDiGetClassDevsWNative = IntPtr Function(Pointer<Void>, Pointer<Utf16>, Pointer<Void>, Uint32);
typedef SetupDiGetClassDevsWDart = int Function(Pointer<Void>, Pointer<Utf16>, Pointer<Void>, int);
final SetupDiGetClassDevsW = DynamicLibrary.open('SETUPAPI.dll')
    .lookupFunction<SetupDiGetClassDevsWNative, SetupDiGetClassDevsWDart>('SetupDiGetClassDevsW');
// ClassGuid : GUID* optional -> Pointer<Void>
// Enumerator : LPCWSTR optional -> Pointer<Utf16>
// hwndParent : HWND optional -> Pointer<Void>
// Flags : SETUP_DI_GET_CLASS_DEVS_FLAGS -> Uint32
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。

{$mode objfpc}{$H+}
function SetupDiGetClassDevsW(
  ClassGuid: PGUID;   // GUID* optional
  Enumerator: PWideChar;   // LPCWSTR optional
  hwndParent: THandle;   // HWND optional
  Flags: DWORD   // SETUP_DI_GET_CLASS_DEVS_FLAGS
): NativeInt; stdcall;
  external 'SETUPAPI.dll' name 'SetupDiGetClassDevsW';

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

foreign import stdcall safe "SetupDiGetClassDevsW"
  c_SetupDiGetClassDevsW :: Ptr () -> CWString -> Ptr () -> Word32 -> IO CIntPtr
-- ClassGuid : GUID* optional -> Ptr ()
-- Enumerator : LPCWSTR optional -> CWString
-- hwndParent : HWND optional -> Ptr ()
-- Flags : SETUP_DI_GET_CLASS_DEVS_FLAGS -> Word32
-- 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 setupdigetclassdevsw =
  foreign "SetupDiGetClassDevsW"
    ((ptr void) @-> (ptr uint16_t) @-> (ptr void) @-> uint32_t @-> returning intptr_t)
(* ClassGuid : GUID* optional -> (ptr void) *)
(* Enumerator : LPCWSTR optional -> (ptr uint16_t) *)
(* hwndParent : HWND optional -> (ptr void) *)
(* Flags : SETUP_DI_GET_CLASS_DEVS_FLAGS -> uint32_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 setupapi (t "SETUPAPI.dll"))
(cffi:use-foreign-library setupapi)

(cffi:defcfun ("SetupDiGetClassDevsW" setup-di-get-class-devs-w :convention :stdcall) :int64
  (class-guid :pointer)   ; GUID* optional
  (enumerator (:string :encoding :utf-16le))   ; LPCWSTR optional
  (hwnd-parent :pointer)   ; HWND optional
  (flags :uint32))   ; SETUP_DI_GET_CLASS_DEVS_FLAGS
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。

use Win32::API;
my $SetupDiGetClassDevsW = Win32::API::More->new('SETUPAPI',
    'LPARAM SetupDiGetClassDevsW(LPVOID ClassGuid, LPCWSTR Enumerator, HANDLE hwndParent, DWORD Flags)');
# my $ret = $SetupDiGetClassDevsW->Call($ClassGuid, $Enumerator, $hwndParent, $Flags);
# ClassGuid : GUID* optional -> LPVOID
# Enumerator : LPCWSTR optional -> LPCWSTR
# hwndParent : HWND optional -> HANDLE
# Flags : SETUP_DI_GET_CLASS_DEVS_FLAGS -> DWORD
# 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。