GetAddrInfoW

// WS2_32.dll
#include <windows.h>

INT GetAddrInfoW(
    LPCWSTR pNodeName,   // optional
    LPCWSTR pServiceName,   // optional
    const ADDRINFOW* pHints,   // optional
    ADDRINFOW** ppResult
);

<DllImport("WS2_32.dll", ExactSpelling:=True)>
Public Shared Function GetAddrInfoW(
    <MarshalAs(UnmanagedType.LPWStr)> pNodeName As String,   ' LPCWSTR optional
    <MarshalAs(UnmanagedType.LPWStr)> pServiceName As String,   ' LPCWSTR optional
    pHints As IntPtr,   ' ADDRINFOW* optional
    ppResult As IntPtr   ' ADDRINFOW** out
) As Integer
End Function

' pNodeName : LPCWSTR optional
' pServiceName : LPCWSTR optional
' pHints : ADDRINFOW* optional
' ppResult : ADDRINFOW** out
Declare PtrSafe Function GetAddrInfoW Lib "ws2_32" ( _
    ByVal pNodeName As LongPtr, _
    ByVal pServiceName As LongPtr, _
    ByVal pHints As LongPtr, _
    ByVal ppResult 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

GetAddrInfoW = ctypes.windll.ws2_32.GetAddrInfoW
GetAddrInfoW.restype = ctypes.c_int
GetAddrInfoW.argtypes = [
    wintypes.LPCWSTR,  # pNodeName : LPCWSTR optional
    wintypes.LPCWSTR,  # pServiceName : LPCWSTR optional
    ctypes.c_void_p,  # pHints : ADDRINFOW* optional
    ctypes.c_void_p,  # ppResult : ADDRINFOW** out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('WS2_32.dll')
GetAddrInfoW = Fiddle::Function.new(
  lib['GetAddrInfoW'],
  [
    Fiddle::TYPE_VOIDP,  # pNodeName : LPCWSTR optional
    Fiddle::TYPE_VOIDP,  # pServiceName : LPCWSTR optional
    Fiddle::TYPE_VOIDP,  # pHints : ADDRINFOW* optional
    Fiddle::TYPE_VOIDP,  # ppResult : ADDRINFOW** out
  ],
  Fiddle::TYPE_INT)

#[link(name = "ws2_32")]
extern "system" {
    fn GetAddrInfoW(
        pNodeName: *const u16,  // LPCWSTR optional
        pServiceName: *const u16,  // LPCWSTR optional
        pHints: *const ADDRINFOW,  // ADDRINFOW* optional
        ppResult: *mut *mut ADDRINFOW  // ADDRINFOW** out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("WS2_32.dll")]
public static extern int GetAddrInfoW([MarshalAs(UnmanagedType.LPWStr)] string pNodeName, [MarshalAs(UnmanagedType.LPWStr)] string pServiceName, IntPtr pHints, IntPtr ppResult);
"@
$api = Add-Type -MemberDefinition $sig -Name 'WS2_32_GetAddrInfoW' -Namespace Win32 -PassThru
# $api::GetAddrInfoW(pNodeName, pServiceName, pHints, ppResult)

#uselib "WS2_32.dll"
#func global GetAddrInfoW "GetAddrInfoW" sptr, sptr, sptr, sptr
; GetAddrInfoW pNodeName, pServiceName, varptr(pHints), varptr(ppResult)   ; 戻り値は stat
; pNodeName : LPCWSTR optional -> "sptr"
; pServiceName : LPCWSTR optional -> "sptr"
; pHints : ADDRINFOW* optional -> "sptr"
; ppResult : ADDRINFOW** 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 "WS2_32.dll"
#cfunc global GetAddrInfoW "GetAddrInfoW" wstr, wstr, var, var
; res = GetAddrInfoW(pNodeName, pServiceName, pHints, ppResult)
; pNodeName : LPCWSTR optional -> "wstr"
; pServiceName : LPCWSTR optional -> "wstr"
; pHints : ADDRINFOW* optional -> "var"
; ppResult : ADDRINFOW** 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 GetAddrInfoW(LPCWSTR pNodeName, LPCWSTR pServiceName, ADDRINFOW* pHints, ADDRINFOW** ppResult)
#uselib "WS2_32.dll"
#cfunc global GetAddrInfoW "GetAddrInfoW" wstr, wstr, var, var
; res = GetAddrInfoW(pNodeName, pServiceName, pHints, ppResult)
; pNodeName : LPCWSTR optional -> "wstr"
; pServiceName : LPCWSTR optional -> "wstr"
; pHints : ADDRINFOW* optional -> "var"
; ppResult : ADDRINFOW** 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")
	procGetAddrInfoW = ws2_32.NewProc("GetAddrInfoW")
)

// pNodeName (LPCWSTR optional), pServiceName (LPCWSTR optional), pHints (ADDRINFOW* optional), ppResult (ADDRINFOW** out)
r1, _, err := procGetAddrInfoW.Call(
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(pNodeName))),
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(pServiceName))),
	uintptr(pHints),
	uintptr(ppResult),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // INT

function GetAddrInfoW(
  pNodeName: PWideChar;   // LPCWSTR optional
  pServiceName: PWideChar;   // LPCWSTR optional
  pHints: Pointer;   // ADDRINFOW* optional
  ppResult: Pointer   // ADDRINFOW** out
): Integer; stdcall;
  external 'WS2_32.dll' name 'GetAddrInfoW';

result := DllCall("WS2_32\GetAddrInfoW"
    , "WStr", pNodeName   ; LPCWSTR optional
    , "WStr", pServiceName   ; LPCWSTR optional
    , "Ptr", pHints   ; ADDRINFOW* optional
    , "Ptr", ppResult   ; ADDRINFOW** out
    , "Int")   ; return: INT

●GetAddrInfoW(pNodeName, pServiceName, pHints, ppResult) = DLL("WS2_32.dll", "int GetAddrInfoW(char*, char*, void*, void*)")
# 呼び出し: GetAddrInfoW(pNodeName, pServiceName, pHints, ppResult)
# pNodeName : LPCWSTR optional -> "char*"
# pServiceName : LPCWSTR optional -> "char*"
# pHints : ADDRINFOW* optional -> "void*"
# ppResult : ADDRINFOW** 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)。