DsGetDcNextW

// NETAPI32.dll  (Unicode / -W)
#include <windows.h>

DWORD DsGetDcNextW(
    HANDLE GetDcContextHandle,
    DWORD* SockAddressCount,   // optional
    SOCKET_ADDRESS** SockAddresses,   // optional
    LPWSTR* DnsHostName   // optional
);

<DllImport("NETAPI32.dll", CharSet:=CharSet.Unicode, ExactSpelling:=True)>
Public Shared Function DsGetDcNextW(
    GetDcContextHandle As IntPtr,   ' HANDLE
    SockAddressCount As IntPtr,   ' DWORD* optional, out
    SockAddresses As IntPtr,   ' SOCKET_ADDRESS** optional, out
    DnsHostName As IntPtr   ' LPWSTR* optional, out
) As UInteger
End Function

' GetDcContextHandle : HANDLE
' SockAddressCount : DWORD* optional, out
' SockAddresses : SOCKET_ADDRESS** optional, out
' DnsHostName : LPWSTR* optional, out
Declare PtrSafe Function DsGetDcNextW Lib "netapi32" ( _
    ByVal GetDcContextHandle As LongPtr, _
    ByVal SockAddressCount As LongPtr, _
    ByVal SockAddresses As LongPtr, _
    ByVal DnsHostName 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

DsGetDcNextW = ctypes.windll.netapi32.DsGetDcNextW
DsGetDcNextW.restype = wintypes.DWORD
DsGetDcNextW.argtypes = [
    wintypes.HANDLE,  # GetDcContextHandle : HANDLE
    ctypes.POINTER(wintypes.DWORD),  # SockAddressCount : DWORD* optional, out
    ctypes.c_void_p,  # SockAddresses : SOCKET_ADDRESS** optional, out
    ctypes.c_void_p,  # DnsHostName : LPWSTR* optional, out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('NETAPI32.dll')
DsGetDcNextW = Fiddle::Function.new(
  lib['DsGetDcNextW'],
  [
    Fiddle::TYPE_VOIDP,  # GetDcContextHandle : HANDLE
    Fiddle::TYPE_VOIDP,  # SockAddressCount : DWORD* optional, out
    Fiddle::TYPE_VOIDP,  # SockAddresses : SOCKET_ADDRESS** optional, out
    Fiddle::TYPE_VOIDP,  # DnsHostName : LPWSTR* optional, out
  ],
  -Fiddle::TYPE_INT)
# Wide strings: pass str.encode("UTF-16LE") + "\x00\x00"

#[link(name = "netapi32")]
extern "system" {
    fn DsGetDcNextW(
        GetDcContextHandle: *mut core::ffi::c_void,  // HANDLE
        SockAddressCount: *mut u32,  // DWORD* optional, out
        SockAddresses: *mut *mut SOCKET_ADDRESS,  // SOCKET_ADDRESS** optional, out
        DnsHostName: *mut *mut u16  // LPWSTR* optional, out
    ) -> u32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("NETAPI32.dll", CharSet = CharSet.Unicode)]
public static extern uint DsGetDcNextW(IntPtr GetDcContextHandle, IntPtr SockAddressCount, IntPtr SockAddresses, IntPtr DnsHostName);
"@
$api = Add-Type -MemberDefinition $sig -Name 'NETAPI32_DsGetDcNextW' -Namespace Win32 -PassThru
# $api::DsGetDcNextW(GetDcContextHandle, SockAddressCount, SockAddresses, DnsHostName)

#uselib "NETAPI32.dll"
#func global DsGetDcNextW "DsGetDcNextW" wptr, wptr, wptr, wptr
; DsGetDcNextW GetDcContextHandle, varptr(SockAddressCount), varptr(SockAddresses), varptr(DnsHostName)   ; 戻り値は stat
; GetDcContextHandle : HANDLE -> "wptr"
; SockAddressCount : DWORD* optional, out -> "wptr"
; SockAddresses : SOCKET_ADDRESS** optional, out -> "wptr"
; DnsHostName : LPWSTR* optional, out -> "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。

#uselib "NETAPI32.dll"
#cfunc global DsGetDcNextW "DsGetDcNextW" sptr, var, var, var
; res = DsGetDcNextW(GetDcContextHandle, SockAddressCount, SockAddresses, DnsHostName)
; GetDcContextHandle : HANDLE -> "sptr"
; SockAddressCount : DWORD* optional, out -> "var"
; SockAddresses : SOCKET_ADDRESS** optional, out -> "var"
; DnsHostName : LPWSTR* 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。

; DWORD DsGetDcNextW(HANDLE GetDcContextHandle, DWORD* SockAddressCount, SOCKET_ADDRESS** SockAddresses, LPWSTR* DnsHostName)
#uselib "NETAPI32.dll"
#cfunc global DsGetDcNextW "DsGetDcNextW" intptr, var, var, var
; res = DsGetDcNextW(GetDcContextHandle, SockAddressCount, SockAddresses, DnsHostName)
; GetDcContextHandle : HANDLE -> "intptr"
; SockAddressCount : DWORD* optional, out -> "var"
; SockAddresses : SOCKET_ADDRESS** optional, out -> "var"
; DnsHostName : LPWSTR* 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 (
	netapi32 = windows.NewLazySystemDLL("NETAPI32.dll")
	procDsGetDcNextW = netapi32.NewProc("DsGetDcNextW")
)

// GetDcContextHandle (HANDLE), SockAddressCount (DWORD* optional, out), SockAddresses (SOCKET_ADDRESS** optional, out), DnsHostName (LPWSTR* optional, out)
r1, _, err := procDsGetDcNextW.Call(
	uintptr(GetDcContextHandle),
	uintptr(SockAddressCount),
	uintptr(SockAddresses),
	uintptr(DnsHostName),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // DWORD

function DsGetDcNextW(
  GetDcContextHandle: THandle;   // HANDLE
  SockAddressCount: Pointer;   // DWORD* optional, out
  SockAddresses: Pointer;   // SOCKET_ADDRESS** optional, out
  DnsHostName: PPWideChar   // LPWSTR* optional, out
): DWORD; stdcall;
  external 'NETAPI32.dll' name 'DsGetDcNextW';

result := DllCall("NETAPI32\DsGetDcNextW"
    , "Ptr", GetDcContextHandle   ; HANDLE
    , "Ptr", SockAddressCount   ; DWORD* optional, out
    , "Ptr", SockAddresses   ; SOCKET_ADDRESS** optional, out
    , "Ptr", DnsHostName   ; LPWSTR* optional, out
    , "UInt")   ; return: DWORD

●DsGetDcNextW(GetDcContextHandle, SockAddressCount, SockAddresses, DnsHostName) = DLL("NETAPI32.dll", "dword DsGetDcNextW(void*, void*, void*, void*)")
# 呼び出し: DsGetDcNextW(GetDcContextHandle, SockAddressCount, SockAddresses, DnsHostName)
# GetDcContextHandle : HANDLE -> "void*"
# SockAddressCount : DWORD* optional, out -> "void*"
# SockAddresses : SOCKET_ADDRESS** optional, out -> "void*"
# DnsHostName : LPWSTR* 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)。
# ※-W(Unicode)関数。なでしこ1はANSIのため -A 版の利用を推奨。