ClusterRegEnumKey

// CLUSAPI.dll
#include <windows.h>

INT ClusterRegEnumKey(
    HKEY hKey,
    DWORD dwIndex,
    LPWSTR lpszName,
    DWORD* lpcchName,
    FILETIME* lpftLastWriteTime   // optional
);

<DllImport("CLUSAPI.dll", ExactSpelling:=True)>
Public Shared Function ClusterRegEnumKey(
    hKey As IntPtr,   ' HKEY
    dwIndex As UInteger,   ' DWORD
    <MarshalAs(UnmanagedType.LPWStr)> lpszName As System.Text.StringBuilder,   ' LPWSTR out
    ByRef lpcchName As UInteger,   ' DWORD* in/out
    lpftLastWriteTime As IntPtr   ' FILETIME* optional, out
) As Integer
End Function

' hKey : HKEY
' dwIndex : DWORD
' lpszName : LPWSTR out
' lpcchName : DWORD* in/out
' lpftLastWriteTime : FILETIME* optional, out
Declare PtrSafe Function ClusterRegEnumKey Lib "clusapi" ( _
    ByVal hKey As LongPtr, _
    ByVal dwIndex As Long, _
    ByVal lpszName As LongPtr, _
    ByRef lpcchName As Long, _
    ByVal lpftLastWriteTime As LongPtr) As Long
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

ClusterRegEnumKey = ctypes.windll.clusapi.ClusterRegEnumKey
ClusterRegEnumKey.restype = ctypes.c_int
ClusterRegEnumKey.argtypes = [
    wintypes.HANDLE,  # hKey : HKEY
    wintypes.DWORD,  # dwIndex : DWORD
    wintypes.LPWSTR,  # lpszName : LPWSTR out
    ctypes.POINTER(wintypes.DWORD),  # lpcchName : DWORD* in/out
    ctypes.c_void_p,  # lpftLastWriteTime : FILETIME* optional, out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('CLUSAPI.dll')
ClusterRegEnumKey = Fiddle::Function.new(
  lib['ClusterRegEnumKey'],
  [
    Fiddle::TYPE_VOIDP,  # hKey : HKEY
    -Fiddle::TYPE_INT,  # dwIndex : DWORD
    Fiddle::TYPE_VOIDP,  # lpszName : LPWSTR out
    Fiddle::TYPE_VOIDP,  # lpcchName : DWORD* in/out
    Fiddle::TYPE_VOIDP,  # lpftLastWriteTime : FILETIME* optional, out
  ],
  Fiddle::TYPE_INT)

#[link(name = "clusapi")]
extern "system" {
    fn ClusterRegEnumKey(
        hKey: *mut core::ffi::c_void,  // HKEY
        dwIndex: u32,  // DWORD
        lpszName: *mut u16,  // LPWSTR out
        lpcchName: *mut u32,  // DWORD* in/out
        lpftLastWriteTime: *mut FILETIME  // FILETIME* optional, out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("CLUSAPI.dll")]
public static extern int ClusterRegEnumKey(IntPtr hKey, uint dwIndex, [MarshalAs(UnmanagedType.LPWStr)] System.Text.StringBuilder lpszName, ref uint lpcchName, IntPtr lpftLastWriteTime);
"@
$api = Add-Type -MemberDefinition $sig -Name 'CLUSAPI_ClusterRegEnumKey' -Namespace Win32 -PassThru
# $api::ClusterRegEnumKey(hKey, dwIndex, lpszName, lpcchName, lpftLastWriteTime)

#uselib "CLUSAPI.dll"
#func global ClusterRegEnumKey "ClusterRegEnumKey" sptr, sptr, sptr, sptr, sptr
; ClusterRegEnumKey hKey, dwIndex, varptr(lpszName), varptr(lpcchName), varptr(lpftLastWriteTime)   ; 戻り値は stat
; hKey : HKEY -> "sptr"
; dwIndex : DWORD -> "sptr"
; lpszName : LPWSTR out -> "sptr"
; lpcchName : DWORD* in/out -> "sptr"
; lpftLastWriteTime : FILETIME* optional, out -> "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。

#uselib "CLUSAPI.dll"
#cfunc global ClusterRegEnumKey "ClusterRegEnumKey" sptr, int, var, var, var
; res = ClusterRegEnumKey(hKey, dwIndex, lpszName, lpcchName, lpftLastWriteTime)
; hKey : HKEY -> "sptr"
; dwIndex : DWORD -> "int"
; lpszName : LPWSTR out -> "var"
; lpcchName : DWORD* in/out -> "var"
; lpftLastWriteTime : FILETIME* optional, out -> "var"
; ※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。

; INT ClusterRegEnumKey(HKEY hKey, DWORD dwIndex, LPWSTR lpszName, DWORD* lpcchName, FILETIME* lpftLastWriteTime)
#uselib "CLUSAPI.dll"
#cfunc global ClusterRegEnumKey "ClusterRegEnumKey" intptr, int, var, var, var
; res = ClusterRegEnumKey(hKey, dwIndex, lpszName, lpcchName, lpftLastWriteTime)
; hKey : HKEY -> "intptr"
; dwIndex : DWORD -> "int"
; lpszName : LPWSTR out -> "var"
; lpcchName : DWORD* in/out -> "var"
; lpftLastWriteTime : FILETIME* optional, out -> "var"
; ※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 (
	clusapi = windows.NewLazySystemDLL("CLUSAPI.dll")
	procClusterRegEnumKey = clusapi.NewProc("ClusterRegEnumKey")
)

// hKey (HKEY), dwIndex (DWORD), lpszName (LPWSTR out), lpcchName (DWORD* in/out), lpftLastWriteTime (FILETIME* optional, out)
r1, _, err := procClusterRegEnumKey.Call(
	uintptr(hKey),
	uintptr(dwIndex),
	uintptr(lpszName),
	uintptr(lpcchName),
	uintptr(lpftLastWriteTime),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // INT

function ClusterRegEnumKey(
  hKey: THandle;   // HKEY
  dwIndex: DWORD;   // DWORD
  lpszName: PWideChar;   // LPWSTR out
  lpcchName: Pointer;   // DWORD* in/out
  lpftLastWriteTime: Pointer   // FILETIME* optional, out
): Integer; stdcall;
  external 'CLUSAPI.dll' name 'ClusterRegEnumKey';

result := DllCall("CLUSAPI\ClusterRegEnumKey"
    , "Ptr", hKey   ; HKEY
    , "UInt", dwIndex   ; DWORD
    , "Ptr", lpszName   ; LPWSTR out
    , "Ptr", lpcchName   ; DWORD* in/out
    , "Ptr", lpftLastWriteTime   ; FILETIME* optional, out
    , "Int")   ; return: INT

●ClusterRegEnumKey(hKey, dwIndex, lpszName, lpcchName, lpftLastWriteTime) = DLL("CLUSAPI.dll", "int ClusterRegEnumKey(void*, dword, char*, void*, void*)")
# 呼び出し: ClusterRegEnumKey(hKey, dwIndex, lpszName, lpcchName, lpftLastWriteTime)
# hKey : HKEY -> "void*"
# dwIndex : DWORD -> "dword"
# lpszName : LPWSTR out -> "char*"
# lpcchName : DWORD* in/out -> "void*"
# lpftLastWriteTime : FILETIME* optional, out -> "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)。