DhcpGetOriginalSubnetMask

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

DWORD DhcpGetOriginalSubnetMask(
    LPCWSTR sAdapterName,
    DWORD* dwSubnetMask
);

<DllImport("dhcpcsvc.dll", ExactSpelling:=True)>
Public Shared Function DhcpGetOriginalSubnetMask(
    <MarshalAs(UnmanagedType.LPWStr)> sAdapterName As String,   ' LPCWSTR
    ByRef dwSubnetMask As UInteger   ' DWORD* in/out
) As UInteger
End Function

' sAdapterName : LPCWSTR
' dwSubnetMask : DWORD* in/out
Declare PtrSafe Function DhcpGetOriginalSubnetMask Lib "dhcpcsvc" ( _
    ByVal sAdapterName As LongPtr, _
    ByRef dwSubnetMask As Long) As Long
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

DhcpGetOriginalSubnetMask = ctypes.windll.dhcpcsvc.DhcpGetOriginalSubnetMask
DhcpGetOriginalSubnetMask.restype = wintypes.DWORD
DhcpGetOriginalSubnetMask.argtypes = [
    wintypes.LPCWSTR,  # sAdapterName : LPCWSTR
    ctypes.POINTER(wintypes.DWORD),  # dwSubnetMask : DWORD* in/out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('dhcpcsvc.dll')
DhcpGetOriginalSubnetMask = Fiddle::Function.new(
  lib['DhcpGetOriginalSubnetMask'],
  [
    Fiddle::TYPE_VOIDP,  # sAdapterName : LPCWSTR
    Fiddle::TYPE_VOIDP,  # dwSubnetMask : DWORD* in/out
  ],
  -Fiddle::TYPE_INT)

#[link(name = "dhcpcsvc")]
extern "system" {
    fn DhcpGetOriginalSubnetMask(
        sAdapterName: *const u16,  // LPCWSTR
        dwSubnetMask: *mut u32  // DWORD* in/out
    ) -> u32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("dhcpcsvc.dll")]
public static extern uint DhcpGetOriginalSubnetMask([MarshalAs(UnmanagedType.LPWStr)] string sAdapterName, ref uint dwSubnetMask);
"@
$api = Add-Type -MemberDefinition $sig -Name 'dhcpcsvc_DhcpGetOriginalSubnetMask' -Namespace Win32 -PassThru
# $api::DhcpGetOriginalSubnetMask(sAdapterName, dwSubnetMask)

#uselib "dhcpcsvc.dll"
#func global DhcpGetOriginalSubnetMask "DhcpGetOriginalSubnetMask" sptr, sptr
; DhcpGetOriginalSubnetMask sAdapterName, varptr(dwSubnetMask)   ; 戻り値は stat
; sAdapterName : LPCWSTR -> "sptr"
; dwSubnetMask : DWORD* in/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。

import (
	"golang.org/x/sys/windows"
	"unsafe"
)

var (
	dhcpcsvc = windows.NewLazySystemDLL("dhcpcsvc.dll")
	procDhcpGetOriginalSubnetMask = dhcpcsvc.NewProc("DhcpGetOriginalSubnetMask")
)

// sAdapterName (LPCWSTR), dwSubnetMask (DWORD* in/out)
r1, _, err := procDhcpGetOriginalSubnetMask.Call(
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(sAdapterName))),
	uintptr(dwSubnetMask),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // DWORD

function DhcpGetOriginalSubnetMask(
  sAdapterName: PWideChar;   // LPCWSTR
  dwSubnetMask: Pointer   // DWORD* in/out
): DWORD; stdcall;
  external 'dhcpcsvc.dll' name 'DhcpGetOriginalSubnetMask';

result := DllCall("dhcpcsvc\DhcpGetOriginalSubnetMask"
    , "WStr", sAdapterName   ; LPCWSTR
    , "Ptr", dwSubnetMask   ; DWORD* in/out
    , "UInt")   ; return: DWORD

●DhcpGetOriginalSubnetMask(sAdapterName, dwSubnetMask) = DLL("dhcpcsvc.dll", "dword DhcpGetOriginalSubnetMask(char*, void*)")
# 呼び出し: DhcpGetOriginalSubnetMask(sAdapterName, dwSubnetMask)
# sAdapterName : LPCWSTR -> "char*"
# dwSubnetMask : DWORD* 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)。

const std = @import("std");

extern "dhcpcsvc" fn DhcpGetOriginalSubnetMask(
    sAdapterName: [*c]const u16, // LPCWSTR
    dwSubnetMask: [*c]u32 // DWORD* in/out
) callconv(std.os.windows.WINAPI) u32;

proc DhcpGetOriginalSubnetMask(
    sAdapterName: WideCString,  # LPCWSTR
    dwSubnetMask: ptr uint32  # DWORD* in/out
): uint32 {.importc: "DhcpGetOriginalSubnetMask", stdcall, dynlib: "dhcpcsvc.dll".}

pragma(lib, "dhcpcsvc");
extern(Windows)
uint DhcpGetOriginalSubnetMask(
    const(wchar)* sAdapterName,   // LPCWSTR
    uint* dwSubnetMask   // DWORD* in/out
);

ccall((:DhcpGetOriginalSubnetMask, "dhcpcsvc.dll"), stdcall, UInt32,
      (Cwstring, Ptr{UInt32}),
      sAdapterName, dwSubnetMask)
# sAdapterName : LPCWSTR -> Cwstring
# dwSubnetMask : DWORD* in/out -> Ptr{UInt32}
# stdcall は 32bit のみ意味を持つ(x64 では無視)。

local ffi = require("ffi")
ffi.cdef[[
uint32_t DhcpGetOriginalSubnetMask(
    const uint16_t* sAdapterName,
    uint32_t* dwSubnetMask);
]]
local dhcpcsvc = ffi.load("dhcpcsvc")
-- dhcpcsvc.DhcpGetOriginalSubnetMask(sAdapterName, dwSubnetMask)
-- sAdapterName : LPCWSTR
-- dwSubnetMask : DWORD* in/out
-- 構造体/GUIDへのポインタは cdef が通るよう void* で表記(実型は各引数コメント参照)。値渡し構造体・enum は対応する typedef を cdef に追加すること。

const koffi = require('koffi');
const lib = koffi.load('dhcpcsvc.dll');
const DhcpGetOriginalSubnetMask = lib.func('__stdcall', 'DhcpGetOriginalSubnetMask', 'uint32_t', ['str16', 'uint32_t *']);
// DhcpGetOriginalSubnetMask(sAdapterName, dwSubnetMask)
// sAdapterName : LPCWSTR -> 'str16'
// dwSubnetMask : DWORD* in/out -> 'uint32_t *'
// 出力ポインタは koffi.out(...) で包む。構造体は koffi.struct で定義。

const lib = Deno.dlopen("dhcpcsvc.dll", {
  DhcpGetOriginalSubnetMask: { parameters: ["buffer", "pointer"], result: "u32" },
});
// lib.symbols.DhcpGetOriginalSubnetMask(sAdapterName, dwSubnetMask)
// sAdapterName : LPCWSTR -> "buffer"
// dwSubnetMask : DWORD* in/out -> "pointer"
// 文字列引数は "buffer"(NUL 終端のバイト列を Uint8Array で渡す)。
// 値渡し構造体は { struct: [ ...field types... ] } を使用。

<?php
$ffi = FFI::cdef(<<<C
uint32_t DhcpGetOriginalSubnetMask(
    const uint16_t* sAdapterName,
    uint32_t* dwSubnetMask);
C, "dhcpcsvc.dll");
// $ffi->DhcpGetOriginalSubnetMask(sAdapterName, dwSubnetMask);
// sAdapterName : LPCWSTR
// dwSubnetMask : DWORD* in/out
// 構造体/GUIDへのポインタは cdef が通るよう void* で表記(実型は各引数コメント参照)。値渡し構造体・enum は対応する typedef を cdef に追加すること。
// WINAPI(stdcall): x64 では呼出規約が統一されるため問題なし。x86 では __stdcall 対応のラッパが必要な場合あり。

import com.sun.jna.*;
import com.sun.jna.ptr.*;
import com.sun.jna.win32.StdCallLibrary;
import com.sun.jna.win32.W32APIOptions;

public interface Dhcpcsvc extends StdCallLibrary {
    Dhcpcsvc INSTANCE = Native.load("dhcpcsvc", Dhcpcsvc.class);
    int DhcpGetOriginalSubnetMask(
        WString sAdapterName,   // LPCWSTR
        IntByReference dwSubnetMask   // DWORD* in/out
    );
}

@[Link("dhcpcsvc")]
lib Libdhcpcsvc
  fun DhcpGetOriginalSubnetMask = DhcpGetOriginalSubnetMask(
    sAdapterName : UInt16*,   # LPCWSTR
    dwSubnetMask : UInt32*   # DWORD* in/out
  ) : UInt32
end
# 構造体/GUID/enum は lib 内に対応する型定義が必要。
# 呼出規約: x64 は規約統一のため OK。x86(32bit)は WINAPI=stdcall だが Crystal の fun に stdcall 付与構文がなく非対応。

import 'dart:ffi';
import 'package:ffi/ffi.dart';

typedef DhcpGetOriginalSubnetMaskNative = Uint32 Function(Pointer<Utf16>, Pointer<Uint32>);
typedef DhcpGetOriginalSubnetMaskDart = int Function(Pointer<Utf16>, Pointer<Uint32>);
final DhcpGetOriginalSubnetMask = DynamicLibrary.open('dhcpcsvc.dll')
    .lookupFunction<DhcpGetOriginalSubnetMaskNative, DhcpGetOriginalSubnetMaskDart>('DhcpGetOriginalSubnetMask');
// sAdapterName : LPCWSTR -> Pointer<Utf16>
// dwSubnetMask : DWORD* in/out -> Pointer<Uint32>
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。

{$mode objfpc}{$H+}
function DhcpGetOriginalSubnetMask(
  sAdapterName: PWideChar;   // LPCWSTR
  dwSubnetMask: Pointer   // DWORD* in/out
): DWORD; stdcall;
  external 'dhcpcsvc.dll' name 'DhcpGetOriginalSubnetMask';

import Foreign
import Foreign.C.Types
import Foreign.C.String

foreign import stdcall safe "DhcpGetOriginalSubnetMask"
  c_DhcpGetOriginalSubnetMask :: CWString -> Ptr Word32 -> IO Word32
-- sAdapterName : LPCWSTR -> CWString
-- dwSubnetMask : DWORD* in/out -> Ptr Word32
-- 要 GHC(Windows)。stdcall は x64 では ccall として扱われる。ブロックする API は safe 呼び出し推奨。

open Ctypes
open Foreign

let dhcpgetoriginalsubnetmask =
  foreign "DhcpGetOriginalSubnetMask"
    ((ptr uint16_t) @-> (ptr uint32_t) @-> returning uint32_t)
(* sAdapterName : LPCWSTR -> (ptr uint16_t) *)
(* dwSubnetMask : DWORD* in/out -> (ptr uint32_t) *)
(* foreign は cdecl 前提。x64 Windows では WINAPI と一致。構造体は ctypes structure を定義のこと。 *)

(cffi:define-foreign-library dhcpcsvc (t "dhcpcsvc.dll"))
(cffi:use-foreign-library dhcpcsvc)

(cffi:defcfun ("DhcpGetOriginalSubnetMask" dhcp-get-original-subnet-mask :convention :stdcall) :uint32
  (s-adapter-name (:string :encoding :utf-16le))   ; LPCWSTR
  (dw-subnet-mask :pointer))   ; DWORD* in/out
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。

use Win32::API;
my $DhcpGetOriginalSubnetMask = Win32::API::More->new('dhcpcsvc',
    'DWORD DhcpGetOriginalSubnetMask(LPCWSTR sAdapterName, LPVOID dwSubnetMask)');
# my $ret = $DhcpGetOriginalSubnetMask->Call($sAdapterName, $dwSubnetMask);
# sAdapterName : LPCWSTR -> LPCWSTR
# dwSubnetMask : DWORD* in/out -> LPVOID
# 値渡し構造体は pack() した文字列、または Win32::API::Struct を使用。