WSAStringToAddressW

// WS2_32.dll  (Unicode / -W)
#include <windows.h>

INT WSAStringToAddressW(
    LPWSTR AddressString,
    INT AddressFamily,
    WSAPROTOCOL_INFOW* lpProtocolInfo,   // optional
    SOCKADDR* lpAddress,
    INT* lpAddressLength
);

<DllImport("WS2_32.dll", CharSet:=CharSet.Unicode, SetLastError:=True, ExactSpelling:=True)>
Public Shared Function WSAStringToAddressW(
    <MarshalAs(UnmanagedType.LPWStr)> AddressString As String,   ' LPWSTR
    AddressFamily As Integer,   ' INT
    lpProtocolInfo As IntPtr,   ' WSAPROTOCOL_INFOW* optional
    lpAddress As IntPtr,   ' SOCKADDR* out
    ByRef lpAddressLength As Integer   ' INT* in/out
) As Integer
End Function

' AddressString : LPWSTR
' AddressFamily : INT
' lpProtocolInfo : WSAPROTOCOL_INFOW* optional
' lpAddress : SOCKADDR* out
' lpAddressLength : INT* in/out
Declare PtrSafe Function WSAStringToAddressW Lib "ws2_32" ( _
    ByVal AddressString As LongPtr, _
    ByVal AddressFamily As Long, _
    ByVal lpProtocolInfo As LongPtr, _
    ByVal lpAddress As LongPtr, _
    ByRef lpAddressLength As Long) 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

WSAStringToAddressW = ctypes.windll.ws2_32.WSAStringToAddressW
WSAStringToAddressW.restype = ctypes.c_int
WSAStringToAddressW.argtypes = [
    wintypes.LPCWSTR,  # AddressString : LPWSTR
    ctypes.c_int,  # AddressFamily : INT
    ctypes.c_void_p,  # lpProtocolInfo : WSAPROTOCOL_INFOW* optional
    ctypes.c_void_p,  # lpAddress : SOCKADDR* out
    ctypes.POINTER(ctypes.c_int),  # lpAddressLength : INT* in/out
]
# GetLastError: use ctypes.GetLastError() (or ctypes.WinDLL(use_last_error=True))

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('WS2_32.dll')
WSAStringToAddressW = Fiddle::Function.new(
  lib['WSAStringToAddressW'],
  [
    Fiddle::TYPE_VOIDP,  # AddressString : LPWSTR
    Fiddle::TYPE_INT,  # AddressFamily : INT
    Fiddle::TYPE_VOIDP,  # lpProtocolInfo : WSAPROTOCOL_INFOW* optional
    Fiddle::TYPE_VOIDP,  # lpAddress : SOCKADDR* out
    Fiddle::TYPE_VOIDP,  # lpAddressLength : INT* in/out
  ],
  Fiddle::TYPE_INT)
# Wide strings: pass str.encode("UTF-16LE") + "\x00\x00"

#[link(name = "ws2_32")]
extern "system" {
    fn WSAStringToAddressW(
        AddressString: *mut u16,  // LPWSTR
        AddressFamily: i32,  // INT
        lpProtocolInfo: *mut WSAPROTOCOL_INFOW,  // WSAPROTOCOL_INFOW* optional
        lpAddress: *mut SOCKADDR,  // SOCKADDR* out
        lpAddressLength: *mut i32  // INT* in/out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("WS2_32.dll", CharSet = CharSet.Unicode, SetLastError = true)]
public static extern int WSAStringToAddressW([MarshalAs(UnmanagedType.LPWStr)] string AddressString, int AddressFamily, IntPtr lpProtocolInfo, IntPtr lpAddress, ref int lpAddressLength);
"@
$api = Add-Type -MemberDefinition $sig -Name 'WS2_32_WSAStringToAddressW' -Namespace Win32 -PassThru
# $api::WSAStringToAddressW(AddressString, AddressFamily, lpProtocolInfo, lpAddress, lpAddressLength)

#uselib "WS2_32.dll"
#func global WSAStringToAddressW "WSAStringToAddressW" wptr, wptr, wptr, wptr, wptr
; WSAStringToAddressW AddressString, AddressFamily, varptr(lpProtocolInfo), varptr(lpAddress), varptr(lpAddressLength)   ; 戻り値は stat
; AddressString : LPWSTR -> "wptr"
; AddressFamily : INT -> "wptr"
; lpProtocolInfo : WSAPROTOCOL_INFOW* optional -> "wptr"
; lpAddress : SOCKADDR* out -> "wptr"
; lpAddressLength : INT* in/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 "WS2_32.dll"
#cfunc global WSAStringToAddressW "WSAStringToAddressW" wstr, int, var, var, var
; res = WSAStringToAddressW(AddressString, AddressFamily, lpProtocolInfo, lpAddress, lpAddressLength)
; AddressString : LPWSTR -> "wstr"
; AddressFamily : INT -> "int"
; lpProtocolInfo : WSAPROTOCOL_INFOW* optional -> "var"
; lpAddress : SOCKADDR* out -> "var"
; lpAddressLength : INT* in/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 WSAStringToAddressW(LPWSTR AddressString, INT AddressFamily, WSAPROTOCOL_INFOW* lpProtocolInfo, SOCKADDR* lpAddress, INT* lpAddressLength)
#uselib "WS2_32.dll"
#cfunc global WSAStringToAddressW "WSAStringToAddressW" wstr, int, var, var, var
; res = WSAStringToAddressW(AddressString, AddressFamily, lpProtocolInfo, lpAddress, lpAddressLength)
; AddressString : LPWSTR -> "wstr"
; AddressFamily : INT -> "int"
; lpProtocolInfo : WSAPROTOCOL_INFOW* optional -> "var"
; lpAddress : SOCKADDR* out -> "var"
; lpAddressLength : INT* in/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 (
	ws2_32 = windows.NewLazySystemDLL("WS2_32.dll")
	procWSAStringToAddressW = ws2_32.NewProc("WSAStringToAddressW")
)

// AddressString (LPWSTR), AddressFamily (INT), lpProtocolInfo (WSAPROTOCOL_INFOW* optional), lpAddress (SOCKADDR* out), lpAddressLength (INT* in/out)
r1, _, err := procWSAStringToAddressW.Call(
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(AddressString))),
	uintptr(AddressFamily),
	uintptr(lpProtocolInfo),
	uintptr(lpAddress),
	uintptr(lpAddressLength),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // INT

function WSAStringToAddressW(
  AddressString: PWideChar;   // LPWSTR
  AddressFamily: Integer;   // INT
  lpProtocolInfo: Pointer;   // WSAPROTOCOL_INFOW* optional
  lpAddress: Pointer;   // SOCKADDR* out
  lpAddressLength: Pointer   // INT* in/out
): Integer; stdcall;
  external 'WS2_32.dll' name 'WSAStringToAddressW';

result := DllCall("WS2_32\WSAStringToAddressW"
    , "WStr", AddressString   ; LPWSTR
    , "Int", AddressFamily   ; INT
    , "Ptr", lpProtocolInfo   ; WSAPROTOCOL_INFOW* optional
    , "Ptr", lpAddress   ; SOCKADDR* out
    , "Ptr", lpAddressLength   ; INT* in/out
    , "Int")   ; return: INT

●WSAStringToAddressW(AddressString, AddressFamily, lpProtocolInfo, lpAddress, lpAddressLength) = DLL("WS2_32.dll", "int WSAStringToAddressW(char*, int, void*, void*, void*)")
# 呼び出し: WSAStringToAddressW(AddressString, AddressFamily, lpProtocolInfo, lpAddress, lpAddressLength)
# AddressString : LPWSTR -> "char*"
# AddressFamily : INT -> "int"
# lpProtocolInfo : WSAPROTOCOL_INFOW* optional -> "void*"
# lpAddress : SOCKADDR* out -> "void*"
# lpAddressLength : INT* in/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。