WSAInstallServiceClassW

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

INT WSAInstallServiceClassW(
    WSASERVICECLASSINFOW* lpServiceClassInfo
);

<DllImport("WS2_32.dll", CharSet:=CharSet.Unicode, SetLastError:=True, ExactSpelling:=True)>
Public Shared Function WSAInstallServiceClassW(
    lpServiceClassInfo As IntPtr   ' WSASERVICECLASSINFOW*
) As Integer
End Function

' lpServiceClassInfo : WSASERVICECLASSINFOW*
Declare PtrSafe Function WSAInstallServiceClassW Lib "ws2_32" ( _
    ByVal lpServiceClassInfo 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

WSAInstallServiceClassW = ctypes.windll.ws2_32.WSAInstallServiceClassW
WSAInstallServiceClassW.restype = ctypes.c_int
WSAInstallServiceClassW.argtypes = [
    ctypes.c_void_p,  # lpServiceClassInfo : WSASERVICECLASSINFOW*
]
# GetLastError: use ctypes.GetLastError() (or ctypes.WinDLL(use_last_error=True))

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('WS2_32.dll')
WSAInstallServiceClassW = Fiddle::Function.new(
  lib['WSAInstallServiceClassW'],
  [
    Fiddle::TYPE_VOIDP,  # lpServiceClassInfo : WSASERVICECLASSINFOW*
  ],
  Fiddle::TYPE_INT)
# Wide strings: pass str.encode("UTF-16LE") + "\x00\x00"

#[link(name = "ws2_32")]
extern "system" {
    fn WSAInstallServiceClassW(
        lpServiceClassInfo: *mut WSASERVICECLASSINFOW  // WSASERVICECLASSINFOW*
    ) -> 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 WSAInstallServiceClassW(IntPtr lpServiceClassInfo);
"@
$api = Add-Type -MemberDefinition $sig -Name 'WS2_32_WSAInstallServiceClassW' -Namespace Win32 -PassThru
# $api::WSAInstallServiceClassW(lpServiceClassInfo)

#uselib "WS2_32.dll"
#func global WSAInstallServiceClassW "WSAInstallServiceClassW" wptr
; WSAInstallServiceClassW varptr(lpServiceClassInfo)   ; 戻り値は stat
; lpServiceClassInfo : WSASERVICECLASSINFOW* -> "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 WSAInstallServiceClassW "WSAInstallServiceClassW" var
; res = WSAInstallServiceClassW(lpServiceClassInfo)
; lpServiceClassInfo : WSASERVICECLASSINFOW* -> "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 WSAInstallServiceClassW(WSASERVICECLASSINFOW* lpServiceClassInfo)
#uselib "WS2_32.dll"
#cfunc global WSAInstallServiceClassW "WSAInstallServiceClassW" var
; res = WSAInstallServiceClassW(lpServiceClassInfo)
; lpServiceClassInfo : WSASERVICECLASSINFOW* -> "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")
	procWSAInstallServiceClassW = ws2_32.NewProc("WSAInstallServiceClassW")
)

// lpServiceClassInfo (WSASERVICECLASSINFOW*)
r1, _, err := procWSAInstallServiceClassW.Call(
	uintptr(lpServiceClassInfo),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // INT

function WSAInstallServiceClassW(
  lpServiceClassInfo: Pointer   // WSASERVICECLASSINFOW*
): Integer; stdcall;
  external 'WS2_32.dll' name 'WSAInstallServiceClassW';

result := DllCall("WS2_32\WSAInstallServiceClassW"
    , "Ptr", lpServiceClassInfo   ; WSASERVICECLASSINFOW*
    , "Int")   ; return: INT

●WSAInstallServiceClassW(lpServiceClassInfo) = DLL("WS2_32.dll", "int WSAInstallServiceClassW(void*)")
# 呼び出し: WSAInstallServiceClassW(lpServiceClassInfo)
# lpServiceClassInfo : WSASERVICECLASSINFOW* -> "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。