CM_Get_Class_Key_NameA

// CFGMGR32.dll  (ANSI / -A)
#include <windows.h>

CONFIGRET CM_Get_Class_Key_NameA(
    GUID* ClassGuid,
    LPSTR pszKeyName,   // optional
    DWORD* pulLength,
    DWORD ulFlags
);

<DllImport("CFGMGR32.dll", CharSet:=CharSet.Ansi, ExactSpelling:=True)>
Public Shared Function CM_Get_Class_Key_NameA(
    ByRef ClassGuid As Guid,   ' GUID*
    <MarshalAs(UnmanagedType.LPStr)> pszKeyName As System.Text.StringBuilder,   ' LPSTR optional, out
    ByRef pulLength As UInteger,   ' DWORD* in/out
    ulFlags As UInteger   ' DWORD
) As UInteger
End Function

' ClassGuid : GUID*
' pszKeyName : LPSTR optional, out
' pulLength : DWORD* in/out
' ulFlags : DWORD
Declare PtrSafe Function CM_Get_Class_Key_NameA Lib "cfgmgr32" ( _
    ByVal ClassGuid As LongPtr, _
    ByVal pszKeyName As String, _
    ByRef pulLength As Long, _
    ByVal ulFlags As Long) As Long
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

CM_Get_Class_Key_NameA = ctypes.windll.cfgmgr32.CM_Get_Class_Key_NameA
CM_Get_Class_Key_NameA.restype = wintypes.DWORD
CM_Get_Class_Key_NameA.argtypes = [
    ctypes.c_void_p,  # ClassGuid : GUID*
    wintypes.LPSTR,  # pszKeyName : LPSTR optional, out
    ctypes.POINTER(wintypes.DWORD),  # pulLength : DWORD* in/out
    wintypes.DWORD,  # ulFlags : DWORD
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('CFGMGR32.dll')
CM_Get_Class_Key_NameA = Fiddle::Function.new(
  lib['CM_Get_Class_Key_NameA'],
  [
    Fiddle::TYPE_VOIDP,  # ClassGuid : GUID*
    Fiddle::TYPE_VOIDP,  # pszKeyName : LPSTR optional, out
    Fiddle::TYPE_VOIDP,  # pulLength : DWORD* in/out
    -Fiddle::TYPE_INT,  # ulFlags : DWORD
  ],
  -Fiddle::TYPE_INT)

#[link(name = "cfgmgr32")]
extern "system" {
    fn CM_Get_Class_Key_NameA(
        ClassGuid: *mut GUID,  // GUID*
        pszKeyName: *mut u8,  // LPSTR optional, out
        pulLength: *mut u32,  // DWORD* in/out
        ulFlags: u32  // DWORD
    ) -> u32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("CFGMGR32.dll", CharSet = CharSet.Ansi)]
public static extern uint CM_Get_Class_Key_NameA(ref Guid ClassGuid, [MarshalAs(UnmanagedType.LPStr)] System.Text.StringBuilder pszKeyName, ref uint pulLength, uint ulFlags);
"@
$api = Add-Type -MemberDefinition $sig -Name 'CFGMGR32_CM_Get_Class_Key_NameA' -Namespace Win32 -PassThru
# $api::CM_Get_Class_Key_NameA(ClassGuid, pszKeyName, pulLength, ulFlags)

#uselib "CFGMGR32.dll"
#func global CM_Get_Class_Key_NameA "CM_Get_Class_Key_NameA" sptr, sptr, sptr, sptr
; CM_Get_Class_Key_NameA varptr(ClassGuid), varptr(pszKeyName), varptr(pulLength), ulFlags   ; 戻り値は stat
; ClassGuid : GUID* -> "sptr"
; pszKeyName : LPSTR optional, out -> "sptr"
; pulLength : DWORD* in/out -> "sptr"
; ulFlags : DWORD -> "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 (
	cfgmgr32 = windows.NewLazySystemDLL("CFGMGR32.dll")
	procCM_Get_Class_Key_NameA = cfgmgr32.NewProc("CM_Get_Class_Key_NameA")
)

// ClassGuid (GUID*), pszKeyName (LPSTR optional, out), pulLength (DWORD* in/out), ulFlags (DWORD)
r1, _, err := procCM_Get_Class_Key_NameA.Call(
	uintptr(ClassGuid),
	uintptr(pszKeyName),
	uintptr(pulLength),
	uintptr(ulFlags),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // CONFIGRET

function CM_Get_Class_Key_NameA(
  ClassGuid: PGUID;   // GUID*
  pszKeyName: PAnsiChar;   // LPSTR optional, out
  pulLength: Pointer;   // DWORD* in/out
  ulFlags: DWORD   // DWORD
): DWORD; stdcall;
  external 'CFGMGR32.dll' name 'CM_Get_Class_Key_NameA';

result := DllCall("CFGMGR32\CM_Get_Class_Key_NameA"
    , "Ptr", ClassGuid   ; GUID*
    , "Ptr", pszKeyName   ; LPSTR optional, out
    , "Ptr", pulLength   ; DWORD* in/out
    , "UInt", ulFlags   ; DWORD
    , "UInt")   ; return: CONFIGRET

●CM_Get_Class_Key_NameA(ClassGuid, pszKeyName, pulLength, ulFlags) = DLL("CFGMGR32.dll", "dword CM_Get_Class_Key_NameA(void*, char*, void*, dword)")
# 呼び出し: CM_Get_Class_Key_NameA(ClassGuid, pszKeyName, pulLength, ulFlags)
# ClassGuid : GUID* -> "void*"
# pszKeyName : LPSTR optional, out -> "char*"
# pulLength : DWORD* in/out -> "void*"
# ulFlags : DWORD -> "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 "cfgmgr32" fn CM_Get_Class_Key_NameA(
    ClassGuid: [*c]GUID, // GUID*
    pszKeyName: [*c]u8, // LPSTR optional, out
    pulLength: [*c]u32, // DWORD* in/out
    ulFlags: u32 // DWORD
) callconv(std.os.windows.WINAPI) u32;

proc CM_Get_Class_Key_NameA(
    ClassGuid: ptr GUID,  # GUID*
    pszKeyName: ptr char,  # LPSTR optional, out
    pulLength: ptr uint32,  # DWORD* in/out
    ulFlags: uint32  # DWORD
): uint32 {.importc: "CM_Get_Class_Key_NameA", stdcall, dynlib: "CFGMGR32.dll".}

pragma(lib, "cfgmgr32");
extern(Windows)
uint CM_Get_Class_Key_NameA(
    GUID* ClassGuid,   // GUID*
    char* pszKeyName,   // LPSTR optional, out
    uint* pulLength,   // DWORD* in/out
    uint ulFlags   // DWORD
);

ccall((:CM_Get_Class_Key_NameA, "CFGMGR32.dll"), stdcall, UInt32,
      (Ptr{GUID}, Ptr{UInt8}, Ptr{UInt32}, UInt32),
      ClassGuid, pszKeyName, pulLength, ulFlags)
# ClassGuid : GUID* -> Ptr{GUID}
# pszKeyName : LPSTR optional, out -> Ptr{UInt8}
# pulLength : DWORD* in/out -> Ptr{UInt32}
# ulFlags : DWORD -> UInt32
# stdcall は 32bit のみ意味を持つ(x64 では無視)。

local ffi = require("ffi")
ffi.cdef[[
uint32_t CM_Get_Class_Key_NameA(
    void* ClassGuid,
    char* pszKeyName,
    uint32_t* pulLength,
    uint32_t ulFlags);
]]
local cfgmgr32 = ffi.load("cfgmgr32")
-- cfgmgr32.CM_Get_Class_Key_NameA(ClassGuid, pszKeyName, pulLength, ulFlags)
-- ClassGuid : GUID*
-- pszKeyName : LPSTR optional, out
-- pulLength : DWORD* in/out
-- ulFlags : DWORD
-- 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('CFGMGR32.dll');
const CM_Get_Class_Key_NameA = lib.func('__stdcall', 'CM_Get_Class_Key_NameA', 'uint32_t', ['void *', 'char *', 'uint32_t *', 'uint32_t']);
// CM_Get_Class_Key_NameA(ClassGuid, pszKeyName, pulLength, ulFlags)
// ClassGuid : GUID* -> 'void *'
// pszKeyName : LPSTR optional, out -> 'char *'
// pulLength : DWORD* in/out -> 'uint32_t *'
// ulFlags : DWORD -> '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("CFGMGR32.dll", {
  CM_Get_Class_Key_NameA: { parameters: ["pointer", "buffer", "pointer", "u32"], result: "u32" },
});
// lib.symbols.CM_Get_Class_Key_NameA(ClassGuid, pszKeyName, pulLength, ulFlags)
// ClassGuid : GUID* -> "pointer"
// pszKeyName : LPSTR optional, out -> "buffer"
// pulLength : DWORD* in/out -> "pointer"
// ulFlags : DWORD -> "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
uint32_t CM_Get_Class_Key_NameA(
    void* ClassGuid,
    char* pszKeyName,
    uint32_t* pulLength,
    uint32_t ulFlags);
C, "CFGMGR32.dll");
// $ffi->CM_Get_Class_Key_NameA(ClassGuid, pszKeyName, pulLength, ulFlags);
// ClassGuid : GUID*
// pszKeyName : LPSTR optional, out
// pulLength : DWORD* in/out
// ulFlags : DWORD
// 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 Cfgmgr32 extends StdCallLibrary {
    Cfgmgr32 INSTANCE = Native.load("cfgmgr32", Cfgmgr32.class, W32APIOptions.ASCII_OPTIONS);
    int CM_Get_Class_Key_NameA(
        Pointer ClassGuid,   // GUID*
        byte[] pszKeyName,   // LPSTR optional, out
        IntByReference pulLength,   // DWORD* in/out
        int ulFlags   // DWORD
    );
}

@[Link("cfgmgr32")]
lib LibCFGMGR32
  fun CM_Get_Class_Key_NameA = CM_Get_Class_Key_NameA(
    ClassGuid : GUID*,   # GUID*
    pszKeyName : UInt8*,   # LPSTR optional, out
    pulLength : UInt32*,   # DWORD* in/out
    ulFlags : UInt32   # DWORD
  ) : 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 CM_Get_Class_Key_NameANative = Uint32 Function(Pointer<Void>, Pointer<Utf8>, Pointer<Uint32>, Uint32);
typedef CM_Get_Class_Key_NameADart = int Function(Pointer<Void>, Pointer<Utf8>, Pointer<Uint32>, int);
final CM_Get_Class_Key_NameA = DynamicLibrary.open('CFGMGR32.dll')
    .lookupFunction<CM_Get_Class_Key_NameANative, CM_Get_Class_Key_NameADart>('CM_Get_Class_Key_NameA');
// ClassGuid : GUID* -> Pointer<Void>
// pszKeyName : LPSTR optional, out -> Pointer<Utf8>
// pulLength : DWORD* in/out -> Pointer<Uint32>
// ulFlags : DWORD -> Uint32
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。

{$mode objfpc}{$H+}
function CM_Get_Class_Key_NameA(
  ClassGuid: PGUID;   // GUID*
  pszKeyName: PAnsiChar;   // LPSTR optional, out
  pulLength: Pointer;   // DWORD* in/out
  ulFlags: DWORD   // DWORD
): DWORD; stdcall;
  external 'CFGMGR32.dll' name 'CM_Get_Class_Key_NameA';

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

foreign import stdcall safe "CM_Get_Class_Key_NameA"
  c_CM_Get_Class_Key_NameA :: Ptr () -> CString -> Ptr Word32 -> Word32 -> IO Word32
-- ClassGuid : GUID* -> Ptr ()
-- pszKeyName : LPSTR optional, out -> CString
-- pulLength : DWORD* in/out -> Ptr Word32
-- ulFlags : DWORD -> 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 cm_get_class_key_namea =
  foreign "CM_Get_Class_Key_NameA"
    ((ptr void) @-> string @-> (ptr uint32_t) @-> uint32_t @-> returning uint32_t)
(* ClassGuid : GUID* -> (ptr void) *)
(* pszKeyName : LPSTR optional, out -> string *)
(* pulLength : DWORD* in/out -> (ptr uint32_t) *)
(* ulFlags : DWORD -> 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 cfgmgr32 (t "CFGMGR32.dll"))
(cffi:use-foreign-library cfgmgr32)

(cffi:defcfun ("CM_Get_Class_Key_NameA" cm-get-class-key-name-a :convention :stdcall) :uint32
  (class-guid :pointer)   ; GUID*
  (psz-key-name :pointer)   ; LPSTR optional, out
  (pul-length :pointer)   ; DWORD* in/out
  (ul-flags :uint32))   ; DWORD
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。

use Win32::API;
my $CM_Get_Class_Key_NameA = Win32::API::More->new('CFGMGR32',
    'DWORD CM_Get_Class_Key_NameA(LPVOID ClassGuid, LPSTR pszKeyName, LPVOID pulLength, DWORD ulFlags)');
# my $ret = $CM_Get_Class_Key_NameA->Call($ClassGuid, $pszKeyName, $pulLength, $ulFlags);
# ClassGuid : GUID* -> LPVOID
# pszKeyName : LPSTR optional, out -> LPSTR
# pulLength : DWORD* in/out -> LPVOID
# ulFlags : DWORD -> DWORD
# 値渡し構造体は pack() した文字列、または Win32::API::Struct を使用。