HcnEnumerateLoadBalancers

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

HRESULT HcnEnumerateLoadBalancers(
    LPCWSTR Query,
    LPWSTR* LoadBalancer,
    LPWSTR* ErrorRecord   // optional
);

<DllImport("computenetwork.dll", ExactSpelling:=True)>
Public Shared Function HcnEnumerateLoadBalancers(
    <MarshalAs(UnmanagedType.LPWStr)> Query As String,   ' LPCWSTR
    LoadBalancer As IntPtr,   ' LPWSTR* out
    ErrorRecord As IntPtr   ' LPWSTR* optional, out
) As Integer
End Function

' Query : LPCWSTR
' LoadBalancer : LPWSTR* out
' ErrorRecord : LPWSTR* optional, out
Declare PtrSafe Function HcnEnumerateLoadBalancers Lib "computenetwork" ( _
    ByVal Query As LongPtr, _
    ByVal LoadBalancer As LongPtr, _
    ByVal ErrorRecord 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

HcnEnumerateLoadBalancers = ctypes.windll.computenetwork.HcnEnumerateLoadBalancers
HcnEnumerateLoadBalancers.restype = ctypes.c_int
HcnEnumerateLoadBalancers.argtypes = [
    wintypes.LPCWSTR,  # Query : LPCWSTR
    ctypes.c_void_p,  # LoadBalancer : LPWSTR* out
    ctypes.c_void_p,  # ErrorRecord : LPWSTR* optional, out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('computenetwork.dll')
HcnEnumerateLoadBalancers = Fiddle::Function.new(
  lib['HcnEnumerateLoadBalancers'],
  [
    Fiddle::TYPE_VOIDP,  # Query : LPCWSTR
    Fiddle::TYPE_VOIDP,  # LoadBalancer : LPWSTR* out
    Fiddle::TYPE_VOIDP,  # ErrorRecord : LPWSTR* optional, out
  ],
  Fiddle::TYPE_INT)

#[link(name = "computenetwork")]
extern "system" {
    fn HcnEnumerateLoadBalancers(
        Query: *const u16,  // LPCWSTR
        LoadBalancer: *mut *mut u16,  // LPWSTR* out
        ErrorRecord: *mut *mut u16  // LPWSTR* optional, out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("computenetwork.dll")]
public static extern int HcnEnumerateLoadBalancers([MarshalAs(UnmanagedType.LPWStr)] string Query, IntPtr LoadBalancer, IntPtr ErrorRecord);
"@
$api = Add-Type -MemberDefinition $sig -Name 'computenetwork_HcnEnumerateLoadBalancers' -Namespace Win32 -PassThru
# $api::HcnEnumerateLoadBalancers(Query, LoadBalancer, ErrorRecord)

#uselib "computenetwork.dll"
#func global HcnEnumerateLoadBalancers "HcnEnumerateLoadBalancers" sptr, sptr, sptr
; HcnEnumerateLoadBalancers Query, varptr(LoadBalancer), varptr(ErrorRecord)   ; 戻り値は stat
; Query : LPCWSTR -> "sptr"
; LoadBalancer : LPWSTR* out -> "sptr"
; ErrorRecord : LPWSTR* optional, 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 (
	computenetwork = windows.NewLazySystemDLL("computenetwork.dll")
	procHcnEnumerateLoadBalancers = computenetwork.NewProc("HcnEnumerateLoadBalancers")
)

// Query (LPCWSTR), LoadBalancer (LPWSTR* out), ErrorRecord (LPWSTR* optional, out)
r1, _, err := procHcnEnumerateLoadBalancers.Call(
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(Query))),
	uintptr(LoadBalancer),
	uintptr(ErrorRecord),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // HRESULT

function HcnEnumerateLoadBalancers(
  Query: PWideChar;   // LPCWSTR
  LoadBalancer: PPWideChar;   // LPWSTR* out
  ErrorRecord: PPWideChar   // LPWSTR* optional, out
): Integer; stdcall;
  external 'computenetwork.dll' name 'HcnEnumerateLoadBalancers';

result := DllCall("computenetwork\HcnEnumerateLoadBalancers"
    , "WStr", Query   ; LPCWSTR
    , "Ptr", LoadBalancer   ; LPWSTR* out
    , "Ptr", ErrorRecord   ; LPWSTR* optional, out
    , "Int")   ; return: HRESULT

●HcnEnumerateLoadBalancers(Query, LoadBalancer, ErrorRecord) = DLL("computenetwork.dll", "int HcnEnumerateLoadBalancers(char*, void*, void*)")
# 呼び出し: HcnEnumerateLoadBalancers(Query, LoadBalancer, ErrorRecord)
# Query : LPCWSTR -> "char*"
# LoadBalancer : LPWSTR* out -> "void*"
# ErrorRecord : LPWSTR* optional, 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 "computenetwork" fn HcnEnumerateLoadBalancers(
    Query: [*c]const u16, // LPCWSTR
    LoadBalancer: [*c][*c]u16, // LPWSTR* out
    ErrorRecord: [*c][*c]u16 // LPWSTR* optional, out
) callconv(std.os.windows.WINAPI) i32;

proc HcnEnumerateLoadBalancers(
    Query: WideCString,  # LPCWSTR
    LoadBalancer: ptr WideCString,  # LPWSTR* out
    ErrorRecord: ptr WideCString  # LPWSTR* optional, out
): int32 {.importc: "HcnEnumerateLoadBalancers", stdcall, dynlib: "computenetwork.dll".}

pragma(lib, "computenetwork");
extern(Windows)
int HcnEnumerateLoadBalancers(
    const(wchar)* Query,   // LPCWSTR
    wchar** LoadBalancer,   // LPWSTR* out
    wchar** ErrorRecord   // LPWSTR* optional, out
);

ccall((:HcnEnumerateLoadBalancers, "computenetwork.dll"), stdcall, Int32,
      (Cwstring, Ptr{Ptr{UInt16}}, Ptr{Ptr{UInt16}}),
      Query, LoadBalancer, ErrorRecord)
# Query : LPCWSTR -> Cwstring
# LoadBalancer : LPWSTR* out -> Ptr{Ptr{UInt16}}
# ErrorRecord : LPWSTR* optional, out -> Ptr{Ptr{UInt16}}
# stdcall は 32bit のみ意味を持つ(x64 では無視)。

local ffi = require("ffi")
ffi.cdef[[
int32_t HcnEnumerateLoadBalancers(
    const uint16_t* Query,
    uint16_t** LoadBalancer,
    uint16_t** ErrorRecord);
]]
local computenetwork = ffi.load("computenetwork")
-- computenetwork.HcnEnumerateLoadBalancers(Query, LoadBalancer, ErrorRecord)
-- Query : LPCWSTR
-- LoadBalancer : LPWSTR* out
-- ErrorRecord : LPWSTR* optional, 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('computenetwork.dll');
const HcnEnumerateLoadBalancers = lib.func('__stdcall', 'HcnEnumerateLoadBalancers', 'int32_t', ['str16', 'void *', 'void *']);
// HcnEnumerateLoadBalancers(Query, LoadBalancer, ErrorRecord)
// Query : LPCWSTR -> 'str16'
// LoadBalancer : LPWSTR* out -> 'void *'
// ErrorRecord : LPWSTR* optional, out -> 'void *'
// 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("computenetwork.dll", {
  HcnEnumerateLoadBalancers: { parameters: ["buffer", "pointer", "pointer"], result: "i32" },
});
// lib.symbols.HcnEnumerateLoadBalancers(Query, LoadBalancer, ErrorRecord)
// Query : LPCWSTR -> "buffer"
// LoadBalancer : LPWSTR* out -> "pointer"
// ErrorRecord : LPWSTR* optional, 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
int32_t HcnEnumerateLoadBalancers(
    const uint16_t* Query,
    uint16_t** LoadBalancer,
    uint16_t** ErrorRecord);
C, "computenetwork.dll");
// $ffi->HcnEnumerateLoadBalancers(Query, LoadBalancer, ErrorRecord);
// Query : LPCWSTR
// LoadBalancer : LPWSTR* out
// ErrorRecord : LPWSTR* optional, 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 Computenetwork extends StdCallLibrary {
    Computenetwork INSTANCE = Native.load("computenetwork", Computenetwork.class);
    int HcnEnumerateLoadBalancers(
        WString Query,   // LPCWSTR
        PointerByReference LoadBalancer,   // LPWSTR* out
        PointerByReference ErrorRecord   // LPWSTR* optional, out
    );
}

@[Link("computenetwork")]
lib Libcomputenetwork
  fun HcnEnumerateLoadBalancers = HcnEnumerateLoadBalancers(
    Query : UInt16*,   # LPCWSTR
    LoadBalancer : UInt16**,   # LPWSTR* out
    ErrorRecord : UInt16**   # LPWSTR* optional, out
  ) : Int32
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 HcnEnumerateLoadBalancersNative = Int32 Function(Pointer<Utf16>, Pointer<Pointer<Utf16>>, Pointer<Pointer<Utf16>>);
typedef HcnEnumerateLoadBalancersDart = int Function(Pointer<Utf16>, Pointer<Pointer<Utf16>>, Pointer<Pointer<Utf16>>);
final HcnEnumerateLoadBalancers = DynamicLibrary.open('computenetwork.dll')
    .lookupFunction<HcnEnumerateLoadBalancersNative, HcnEnumerateLoadBalancersDart>('HcnEnumerateLoadBalancers');
// Query : LPCWSTR -> Pointer<Utf16>
// LoadBalancer : LPWSTR* out -> Pointer<Pointer<Utf16>>
// ErrorRecord : LPWSTR* optional, out -> Pointer<Pointer<Utf16>>
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。

{$mode objfpc}{$H+}
function HcnEnumerateLoadBalancers(
  Query: PWideChar;   // LPCWSTR
  LoadBalancer: PPWideChar;   // LPWSTR* out
  ErrorRecord: PPWideChar   // LPWSTR* optional, out
): Integer; stdcall;
  external 'computenetwork.dll' name 'HcnEnumerateLoadBalancers';

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

foreign import stdcall safe "HcnEnumerateLoadBalancers"
  c_HcnEnumerateLoadBalancers :: CWString -> Ptr CWString -> Ptr CWString -> IO Int32
-- Query : LPCWSTR -> CWString
-- LoadBalancer : LPWSTR* out -> Ptr CWString
-- ErrorRecord : LPWSTR* optional, out -> Ptr CWString
-- 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 hcnenumerateloadbalancers =
  foreign "HcnEnumerateLoadBalancers"
    ((ptr uint16_t) @-> (ptr (ptr uint16_t)) @-> (ptr (ptr uint16_t)) @-> returning int32_t)
(* Query : LPCWSTR -> (ptr uint16_t) *)
(* LoadBalancer : LPWSTR* out -> (ptr (ptr uint16_t)) *)
(* ErrorRecord : LPWSTR* optional, out -> (ptr (ptr uint16_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 computenetwork (t "computenetwork.dll"))
(cffi:use-foreign-library computenetwork)

(cffi:defcfun ("HcnEnumerateLoadBalancers" hcn-enumerate-load-balancers :convention :stdcall) :int32
  (query (:string :encoding :utf-16le))   ; LPCWSTR
  (load-balancer :pointer)   ; LPWSTR* out
  (error-record :pointer))   ; LPWSTR* optional, out
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。

use Win32::API;
my $HcnEnumerateLoadBalancers = Win32::API::More->new('computenetwork',
    'int HcnEnumerateLoadBalancers(LPCWSTR Query, LPVOID LoadBalancer, LPVOID ErrorRecord)');
# my $ret = $HcnEnumerateLoadBalancers->Call($Query, $LoadBalancer, $ErrorRecord);
# Query : LPCWSTR -> LPCWSTR
# LoadBalancer : LPWSTR* out -> LPVOID
# ErrorRecord : LPWSTR* optional, out -> LPVOID
# 値渡し構造体は pack() した文字列、または Win32::API::Struct を使用。