SetupDiGetClassDevsA

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

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

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

' ClassGuid : GUID* optional
' Enumerator : LPCSTR optional
' hwndParent : HWND optional
' Flags : SETUP_DI_GET_CLASS_DEVS_FLAGS
Declare PtrSafe Function SetupDiGetClassDevsA Lib "setupapi" ( _
    ByVal ClassGuid As LongPtr, _
    ByVal Enumerator As String, _
    ByVal hwndParent As LongPtr, _
    ByVal Flags As Long) As LongPtr
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

SetupDiGetClassDevsA = ctypes.windll.setupapi.SetupDiGetClassDevsA
SetupDiGetClassDevsA.restype = ctypes.c_ssize_t
SetupDiGetClassDevsA.argtypes = [
    ctypes.c_void_p,  # ClassGuid : GUID* optional
    wintypes.LPCSTR,  # Enumerator : LPCSTR 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')
SetupDiGetClassDevsA = Fiddle::Function.new(
  lib['SetupDiGetClassDevsA'],
  [
    Fiddle::TYPE_VOIDP,  # ClassGuid : GUID* optional
    Fiddle::TYPE_VOIDP,  # Enumerator : LPCSTR optional
    Fiddle::TYPE_VOIDP,  # hwndParent : HWND optional
    -Fiddle::TYPE_INT,  # Flags : SETUP_DI_GET_CLASS_DEVS_FLAGS
  ],
  Fiddle::TYPE_INTPTR_T)

#[link(name = "setupapi")]
extern "system" {
    fn SetupDiGetClassDevsA(
        ClassGuid: *const GUID,  // GUID* optional
        Enumerator: *const u8,  // LPCSTR 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.Ansi, SetLastError = true)]
public static extern IntPtr SetupDiGetClassDevsA(IntPtr ClassGuid, [MarshalAs(UnmanagedType.LPStr)] string Enumerator, IntPtr hwndParent, uint Flags);
"@
$api = Add-Type -MemberDefinition $sig -Name 'SETUPAPI_SetupDiGetClassDevsA' -Namespace Win32 -PassThru
# $api::SetupDiGetClassDevsA(ClassGuid, Enumerator, hwndParent, Flags)

#uselib "SETUPAPI.dll"
#func global SetupDiGetClassDevsA "SetupDiGetClassDevsA" sptr, sptr, sptr, sptr
; SetupDiGetClassDevsA varptr(ClassGuid), Enumerator, hwndParent, Flags   ; 戻り値は stat
; ClassGuid : GUID* optional -> "sptr"
; Enumerator : LPCSTR optional -> "sptr"
; hwndParent : HWND optional -> "sptr"
; Flags : SETUP_DI_GET_CLASS_DEVS_FLAGS -> "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 (
	setupapi = windows.NewLazySystemDLL("SETUPAPI.dll")
	procSetupDiGetClassDevsA = setupapi.NewProc("SetupDiGetClassDevsA")
)

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

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

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

●SetupDiGetClassDevsA(ClassGuid, Enumerator, hwndParent, Flags) = DLL("SETUPAPI.dll", "int SetupDiGetClassDevsA(void*, char*, void*, dword)")
# 呼び出し: SetupDiGetClassDevsA(ClassGuid, Enumerator, hwndParent, Flags)
# ClassGuid : GUID* optional -> "void*"
# Enumerator : LPCSTR 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)。

const std = @import("std");

extern "setupapi" fn SetupDiGetClassDevsA(
    ClassGuid: [*c]GUID, // GUID* optional
    Enumerator: [*c]const u8, // LPCSTR optional
    hwndParent: ?*anyopaque, // HWND optional
    Flags: u32 // SETUP_DI_GET_CLASS_DEVS_FLAGS
) callconv(std.os.windows.WINAPI) isize;

proc SetupDiGetClassDevsA(
    ClassGuid: ptr GUID,  # GUID* optional
    Enumerator: cstring,  # LPCSTR optional
    hwndParent: pointer,  # HWND optional
    Flags: uint32  # SETUP_DI_GET_CLASS_DEVS_FLAGS
): int {.importc: "SetupDiGetClassDevsA", stdcall, dynlib: "SETUPAPI.dll".}

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

ccall((:SetupDiGetClassDevsA, "SETUPAPI.dll"), stdcall, Int,
      (Ptr{GUID}, Cstring, Ptr{Cvoid}, UInt32),
      ClassGuid, Enumerator, hwndParent, Flags)
# ClassGuid : GUID* optional -> Ptr{GUID}
# Enumerator : LPCSTR optional -> Cstring
# 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)。

local ffi = require("ffi")
ffi.cdef[[
intptr_t SetupDiGetClassDevsA(
    void* ClassGuid,
    const char* Enumerator,
    void* hwndParent,
    uint32_t Flags);
]]
local setupapi = ffi.load("setupapi")
-- setupapi.SetupDiGetClassDevsA(ClassGuid, Enumerator, hwndParent, Flags)
-- ClassGuid : GUID* optional
-- Enumerator : LPCSTR 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。

const koffi = require('koffi');
const lib = koffi.load('SETUPAPI.dll');
const SetupDiGetClassDevsA = lib.func('__stdcall', 'SetupDiGetClassDevsA', 'intptr_t', ['void *', 'str', 'void *', 'uint32_t']);
// SetupDiGetClassDevsA(ClassGuid, Enumerator, hwndParent, Flags)
// ClassGuid : GUID* optional -> 'void *'
// Enumerator : LPCSTR optional -> 'str'
// 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", {
  SetupDiGetClassDevsA: { parameters: ["pointer", "buffer", "pointer", "u32"], result: "isize" },
});
// lib.symbols.SetupDiGetClassDevsA(ClassGuid, Enumerator, hwndParent, Flags)
// ClassGuid : GUID* optional -> "pointer"
// Enumerator : LPCSTR optional -> "buffer"
// hwndParent : HWND optional -> "pointer"
// Flags : SETUP_DI_GET_CLASS_DEVS_FLAGS -> "u32"
// 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
intptr_t SetupDiGetClassDevsA(
    void* ClassGuid,
    const char* Enumerator,
    void* hwndParent,
    uint32_t Flags);
C, "SETUPAPI.dll");
// $ffi->SetupDiGetClassDevsA(ClassGuid, Enumerator, hwndParent, Flags);
// ClassGuid : GUID* optional
// Enumerator : LPCSTR 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.ASCII_OPTIONS);
    long SetupDiGetClassDevsA(
        Pointer ClassGuid,   // GUID* optional
        String Enumerator,   // LPCSTR optional
        Pointer hwndParent,   // HWND optional
        int Flags   // SETUP_DI_GET_CLASS_DEVS_FLAGS
    );
}

@[Link("setupapi")]
lib LibSETUPAPI
  fun SetupDiGetClassDevsA = SetupDiGetClassDevsA(
    ClassGuid : GUID*,   # GUID* optional
    Enumerator : UInt8*,   # LPCSTR 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 SetupDiGetClassDevsANative = IntPtr Function(Pointer<Void>, Pointer<Utf8>, Pointer<Void>, Uint32);
typedef SetupDiGetClassDevsADart = int Function(Pointer<Void>, Pointer<Utf8>, Pointer<Void>, int);
final SetupDiGetClassDevsA = DynamicLibrary.open('SETUPAPI.dll')
    .lookupFunction<SetupDiGetClassDevsANative, SetupDiGetClassDevsADart>('SetupDiGetClassDevsA');
// ClassGuid : GUID* optional -> Pointer<Void>
// Enumerator : LPCSTR optional -> Pointer<Utf8>
// 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 SetupDiGetClassDevsA(
  ClassGuid: PGUID;   // GUID* optional
  Enumerator: PAnsiChar;   // LPCSTR optional
  hwndParent: THandle;   // HWND optional
  Flags: DWORD   // SETUP_DI_GET_CLASS_DEVS_FLAGS
): NativeInt; stdcall;
  external 'SETUPAPI.dll' name 'SetupDiGetClassDevsA';

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

foreign import stdcall safe "SetupDiGetClassDevsA"
  c_SetupDiGetClassDevsA :: Ptr () -> CString -> Ptr () -> Word32 -> IO CIntPtr
-- ClassGuid : GUID* optional -> Ptr ()
-- Enumerator : LPCSTR optional -> CString
-- 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 setupdigetclassdevsa =
  foreign "SetupDiGetClassDevsA"
    ((ptr void) @-> string @-> (ptr void) @-> uint32_t @-> returning intptr_t)
(* ClassGuid : GUID* optional -> (ptr void) *)
(* Enumerator : LPCSTR optional -> string *)
(* 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 ("SetupDiGetClassDevsA" setup-di-get-class-devs-a :convention :stdcall) :int64
  (class-guid :pointer)   ; GUID* optional
  (enumerator :string)   ; LPCSTR 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 $SetupDiGetClassDevsA = Win32::API::More->new('SETUPAPI',
    'LPARAM SetupDiGetClassDevsA(LPVOID ClassGuid, LPCSTR Enumerator, HANDLE hwndParent, DWORD Flags)');
# my $ret = $SetupDiGetClassDevsA->Call($ClassGuid, $Enumerator, $hwndParent, $Flags);
# ClassGuid : GUID* optional -> LPVOID
# Enumerator : LPCSTR optional -> LPCSTR
# 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。