DsGetSiteNameW

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

DWORD DsGetSiteNameW(
    LPCWSTR ComputerName,   // optional
    LPWSTR* SiteName
);

<DllImport("NETAPI32.dll", CharSet:=CharSet.Unicode, ExactSpelling:=True)>
Public Shared Function DsGetSiteNameW(
    <MarshalAs(UnmanagedType.LPWStr)> ComputerName As String,   ' LPCWSTR optional
    SiteName As IntPtr   ' LPWSTR* out
) As UInteger
End Function

' ComputerName : LPCWSTR optional
' SiteName : LPWSTR* out
Declare PtrSafe Function DsGetSiteNameW Lib "netapi32" ( _
    ByVal ComputerName As LongPtr, _
    ByVal SiteName 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

DsGetSiteNameW = ctypes.windll.netapi32.DsGetSiteNameW
DsGetSiteNameW.restype = wintypes.DWORD
DsGetSiteNameW.argtypes = [
    wintypes.LPCWSTR,  # ComputerName : LPCWSTR optional
    ctypes.c_void_p,  # SiteName : LPWSTR* out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('NETAPI32.dll')
DsGetSiteNameW = Fiddle::Function.new(
  lib['DsGetSiteNameW'],
  [
    Fiddle::TYPE_VOIDP,  # ComputerName : LPCWSTR optional
    Fiddle::TYPE_VOIDP,  # SiteName : LPWSTR* out
  ],
  -Fiddle::TYPE_INT)
# Wide strings: pass str.encode("UTF-16LE") + "\x00\x00"

#[link(name = "netapi32")]
extern "system" {
    fn DsGetSiteNameW(
        ComputerName: *const u16,  // LPCWSTR optional
        SiteName: *mut *mut u16  // LPWSTR* out
    ) -> u32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("NETAPI32.dll", CharSet = CharSet.Unicode)]
public static extern uint DsGetSiteNameW([MarshalAs(UnmanagedType.LPWStr)] string ComputerName, IntPtr SiteName);
"@
$api = Add-Type -MemberDefinition $sig -Name 'NETAPI32_DsGetSiteNameW' -Namespace Win32 -PassThru
# $api::DsGetSiteNameW(ComputerName, SiteName)

#uselib "NETAPI32.dll"
#func global DsGetSiteNameW "DsGetSiteNameW" wptr, wptr
; DsGetSiteNameW ComputerName, varptr(SiteName)   ; 戻り値は stat
; ComputerName : LPCWSTR optional -> "wptr"
; SiteName : LPWSTR* 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 DsGetSiteNameW "DsGetSiteNameW" wstr, var
; res = DsGetSiteNameW(ComputerName, SiteName)
; ComputerName : LPCWSTR optional -> "wstr"
; SiteName : LPWSTR* 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 DsGetSiteNameW(LPCWSTR ComputerName, LPWSTR* SiteName)
#uselib "NETAPI32.dll"
#cfunc global DsGetSiteNameW "DsGetSiteNameW" wstr, var
; res = DsGetSiteNameW(ComputerName, SiteName)
; ComputerName : LPCWSTR optional -> "wstr"
; SiteName : LPWSTR* 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")
	procDsGetSiteNameW = netapi32.NewProc("DsGetSiteNameW")
)

// ComputerName (LPCWSTR optional), SiteName (LPWSTR* out)
r1, _, err := procDsGetSiteNameW.Call(
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(ComputerName))),
	uintptr(SiteName),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // DWORD

function DsGetSiteNameW(
  ComputerName: PWideChar;   // LPCWSTR optional
  SiteName: PPWideChar   // LPWSTR* out
): DWORD; stdcall;
  external 'NETAPI32.dll' name 'DsGetSiteNameW';

result := DllCall("NETAPI32\DsGetSiteNameW"
    , "WStr", ComputerName   ; LPCWSTR optional
    , "Ptr", SiteName   ; LPWSTR* out
    , "UInt")   ; return: DWORD

●DsGetSiteNameW(ComputerName, SiteName) = DLL("NETAPI32.dll", "dword DsGetSiteNameW(char*, void*)")
# 呼び出し: DsGetSiteNameW(ComputerName, SiteName)
# ComputerName : LPCWSTR optional -> "char*"
# SiteName : LPWSTR* 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。