RtmGetEnumNextHops

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

DWORD RtmGetEnumNextHops(
    INT_PTR RtmRegHandle,
    INT_PTR EnumHandle,
    DWORD* NumNextHops,
    INT_PTR* NextHopHandles
);

<DllImport("rtm.dll", ExactSpelling:=True)>
Public Shared Function RtmGetEnumNextHops(
    RtmRegHandle As IntPtr,   ' INT_PTR
    EnumHandle As IntPtr,   ' INT_PTR
    ByRef NumNextHops As UInteger,   ' DWORD* in/out
    ByRef NextHopHandles As IntPtr   ' INT_PTR* in/out
) As UInteger
End Function

' RtmRegHandle : INT_PTR
' EnumHandle : INT_PTR
' NumNextHops : DWORD* in/out
' NextHopHandles : INT_PTR* in/out
Declare PtrSafe Function RtmGetEnumNextHops Lib "rtm" ( _
    ByVal RtmRegHandle As LongPtr, _
    ByVal EnumHandle As LongPtr, _
    ByRef NumNextHops As Long, _
    ByRef NextHopHandles 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

RtmGetEnumNextHops = ctypes.windll.rtm.RtmGetEnumNextHops
RtmGetEnumNextHops.restype = wintypes.DWORD
RtmGetEnumNextHops.argtypes = [
    ctypes.c_ssize_t,  # RtmRegHandle : INT_PTR
    ctypes.c_ssize_t,  # EnumHandle : INT_PTR
    ctypes.POINTER(wintypes.DWORD),  # NumNextHops : DWORD* in/out
    ctypes.POINTER(ctypes.c_ssize_t),  # NextHopHandles : INT_PTR* in/out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('rtm.dll')
RtmGetEnumNextHops = Fiddle::Function.new(
  lib['RtmGetEnumNextHops'],
  [
    Fiddle::TYPE_INTPTR_T,  # RtmRegHandle : INT_PTR
    Fiddle::TYPE_INTPTR_T,  # EnumHandle : INT_PTR
    Fiddle::TYPE_VOIDP,  # NumNextHops : DWORD* in/out
    Fiddle::TYPE_VOIDP,  # NextHopHandles : INT_PTR* in/out
  ],
  -Fiddle::TYPE_INT)

#[link(name = "rtm")]
extern "system" {
    fn RtmGetEnumNextHops(
        RtmRegHandle: isize,  // INT_PTR
        EnumHandle: isize,  // INT_PTR
        NumNextHops: *mut u32,  // DWORD* in/out
        NextHopHandles: *mut isize  // INT_PTR* in/out
    ) -> u32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("rtm.dll")]
public static extern uint RtmGetEnumNextHops(IntPtr RtmRegHandle, IntPtr EnumHandle, ref uint NumNextHops, ref IntPtr NextHopHandles);
"@
$api = Add-Type -MemberDefinition $sig -Name 'rtm_RtmGetEnumNextHops' -Namespace Win32 -PassThru
# $api::RtmGetEnumNextHops(RtmRegHandle, EnumHandle, NumNextHops, NextHopHandles)

#uselib "rtm.dll"
#func global RtmGetEnumNextHops "RtmGetEnumNextHops" sptr, sptr, sptr, sptr
; RtmGetEnumNextHops RtmRegHandle, EnumHandle, varptr(NumNextHops), varptr(NextHopHandles)   ; 戻り値は stat
; RtmRegHandle : INT_PTR -> "sptr"
; EnumHandle : INT_PTR -> "sptr"
; NumNextHops : DWORD* in/out -> "sptr"
; NextHopHandles : INT_PTR* 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 (
	rtm = windows.NewLazySystemDLL("rtm.dll")
	procRtmGetEnumNextHops = rtm.NewProc("RtmGetEnumNextHops")
)

// RtmRegHandle (INT_PTR), EnumHandle (INT_PTR), NumNextHops (DWORD* in/out), NextHopHandles (INT_PTR* in/out)
r1, _, err := procRtmGetEnumNextHops.Call(
	uintptr(RtmRegHandle),
	uintptr(EnumHandle),
	uintptr(NumNextHops),
	uintptr(NextHopHandles),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // DWORD

function RtmGetEnumNextHops(
  RtmRegHandle: NativeInt;   // INT_PTR
  EnumHandle: NativeInt;   // INT_PTR
  NumNextHops: Pointer;   // DWORD* in/out
  NextHopHandles: Pointer   // INT_PTR* in/out
): DWORD; stdcall;
  external 'rtm.dll' name 'RtmGetEnumNextHops';

result := DllCall("rtm\RtmGetEnumNextHops"
    , "Ptr", RtmRegHandle   ; INT_PTR
    , "Ptr", EnumHandle   ; INT_PTR
    , "Ptr", NumNextHops   ; DWORD* in/out
    , "Ptr", NextHopHandles   ; INT_PTR* in/out
    , "UInt")   ; return: DWORD

●RtmGetEnumNextHops(RtmRegHandle, EnumHandle, NumNextHops, NextHopHandles) = DLL("rtm.dll", "dword RtmGetEnumNextHops(int, int, void*, void*)")
# 呼び出し: RtmGetEnumNextHops(RtmRegHandle, EnumHandle, NumNextHops, NextHopHandles)
# RtmRegHandle : INT_PTR -> "int"
# EnumHandle : INT_PTR -> "int"
# NumNextHops : DWORD* in/out -> "void*"
# NextHopHandles : INT_PTR* 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 "rtm" fn RtmGetEnumNextHops(
    RtmRegHandle: isize, // INT_PTR
    EnumHandle: isize, // INT_PTR
    NumNextHops: [*c]u32, // DWORD* in/out
    NextHopHandles: [*c]isize // INT_PTR* in/out
) callconv(std.os.windows.WINAPI) u32;

proc RtmGetEnumNextHops(
    RtmRegHandle: int,  # INT_PTR
    EnumHandle: int,  # INT_PTR
    NumNextHops: ptr uint32,  # DWORD* in/out
    NextHopHandles: ptr int  # INT_PTR* in/out
): uint32 {.importc: "RtmGetEnumNextHops", stdcall, dynlib: "rtm.dll".}

pragma(lib, "rtm");
extern(Windows)
uint RtmGetEnumNextHops(
    ptrdiff_t RtmRegHandle,   // INT_PTR
    ptrdiff_t EnumHandle,   // INT_PTR
    uint* NumNextHops,   // DWORD* in/out
    ptrdiff_t* NextHopHandles   // INT_PTR* in/out
);

ccall((:RtmGetEnumNextHops, "rtm.dll"), stdcall, UInt32,
      (Int, Int, Ptr{UInt32}, Ptr{Int}),
      RtmRegHandle, EnumHandle, NumNextHops, NextHopHandles)
# RtmRegHandle : INT_PTR -> Int
# EnumHandle : INT_PTR -> Int
# NumNextHops : DWORD* in/out -> Ptr{UInt32}
# NextHopHandles : INT_PTR* in/out -> Ptr{Int}
# stdcall は 32bit のみ意味を持つ(x64 では無視)。

local ffi = require("ffi")
ffi.cdef[[
uint32_t RtmGetEnumNextHops(
    intptr_t RtmRegHandle,
    intptr_t EnumHandle,
    uint32_t* NumNextHops,
    intptr_t* NextHopHandles);
]]
local rtm = ffi.load("rtm")
-- rtm.RtmGetEnumNextHops(RtmRegHandle, EnumHandle, NumNextHops, NextHopHandles)
-- RtmRegHandle : INT_PTR
-- EnumHandle : INT_PTR
-- NumNextHops : DWORD* in/out
-- NextHopHandles : INT_PTR* 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('rtm.dll');
const RtmGetEnumNextHops = lib.func('__stdcall', 'RtmGetEnumNextHops', 'uint32_t', ['intptr_t', 'intptr_t', 'uint32_t *', 'intptr_t *']);
// RtmGetEnumNextHops(RtmRegHandle, EnumHandle, NumNextHops, NextHopHandles)
// RtmRegHandle : INT_PTR -> 'intptr_t'
// EnumHandle : INT_PTR -> 'intptr_t'
// NumNextHops : DWORD* in/out -> 'uint32_t *'
// NextHopHandles : INT_PTR* in/out -> 'intptr_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("rtm.dll", {
  RtmGetEnumNextHops: { parameters: ["isize", "isize", "pointer", "pointer"], result: "u32" },
});
// lib.symbols.RtmGetEnumNextHops(RtmRegHandle, EnumHandle, NumNextHops, NextHopHandles)
// RtmRegHandle : INT_PTR -> "isize"
// EnumHandle : INT_PTR -> "isize"
// NumNextHops : DWORD* in/out -> "pointer"
// NextHopHandles : INT_PTR* 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 RtmGetEnumNextHops(
    intptr_t RtmRegHandle,
    intptr_t EnumHandle,
    uint32_t* NumNextHops,
    intptr_t* NextHopHandles);
C, "rtm.dll");
// $ffi->RtmGetEnumNextHops(RtmRegHandle, EnumHandle, NumNextHops, NextHopHandles);
// RtmRegHandle : INT_PTR
// EnumHandle : INT_PTR
// NumNextHops : DWORD* in/out
// NextHopHandles : INT_PTR* 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 Rtm extends StdCallLibrary {
    Rtm INSTANCE = Native.load("rtm", Rtm.class);
    int RtmGetEnumNextHops(
        long RtmRegHandle,   // INT_PTR
        long EnumHandle,   // INT_PTR
        IntByReference NumNextHops,   // DWORD* in/out
        LongByReference NextHopHandles   // INT_PTR* in/out
    );
}

@[Link("rtm")]
lib Librtm
  fun RtmGetEnumNextHops = RtmGetEnumNextHops(
    RtmRegHandle : LibC::SSizeT,   # INT_PTR
    EnumHandle : LibC::SSizeT,   # INT_PTR
    NumNextHops : UInt32*,   # DWORD* in/out
    NextHopHandles : LibC::SSizeT*   # INT_PTR* 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 RtmGetEnumNextHopsNative = Uint32 Function(IntPtr, IntPtr, Pointer<Uint32>, Pointer<IntPtr>);
typedef RtmGetEnumNextHopsDart = int Function(int, int, Pointer<Uint32>, Pointer<IntPtr>);
final RtmGetEnumNextHops = DynamicLibrary.open('rtm.dll')
    .lookupFunction<RtmGetEnumNextHopsNative, RtmGetEnumNextHopsDart>('RtmGetEnumNextHops');
// RtmRegHandle : INT_PTR -> IntPtr
// EnumHandle : INT_PTR -> IntPtr
// NumNextHops : DWORD* in/out -> Pointer<Uint32>
// NextHopHandles : INT_PTR* in/out -> Pointer<IntPtr>
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。

{$mode objfpc}{$H+}
function RtmGetEnumNextHops(
  RtmRegHandle: NativeInt;   // INT_PTR
  EnumHandle: NativeInt;   // INT_PTR
  NumNextHops: Pointer;   // DWORD* in/out
  NextHopHandles: Pointer   // INT_PTR* in/out
): DWORD; stdcall;
  external 'rtm.dll' name 'RtmGetEnumNextHops';

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

foreign import stdcall safe "RtmGetEnumNextHops"
  c_RtmGetEnumNextHops :: CIntPtr -> CIntPtr -> Ptr Word32 -> Ptr CIntPtr -> IO Word32
-- RtmRegHandle : INT_PTR -> CIntPtr
-- EnumHandle : INT_PTR -> CIntPtr
-- NumNextHops : DWORD* in/out -> Ptr Word32
-- NextHopHandles : INT_PTR* in/out -> Ptr CIntPtr
-- 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 rtmgetenumnexthops =
  foreign "RtmGetEnumNextHops"
    (intptr_t @-> intptr_t @-> (ptr uint32_t) @-> (ptr intptr_t) @-> returning uint32_t)
(* RtmRegHandle : INT_PTR -> intptr_t *)
(* EnumHandle : INT_PTR -> intptr_t *)
(* NumNextHops : DWORD* in/out -> (ptr uint32_t) *)
(* NextHopHandles : INT_PTR* in/out -> (ptr intptr_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 rtm (t "rtm.dll"))
(cffi:use-foreign-library rtm)

(cffi:defcfun ("RtmGetEnumNextHops" rtm-get-enum-next-hops :convention :stdcall) :uint32
  (rtm-reg-handle :int64)   ; INT_PTR
  (enum-handle :int64)   ; INT_PTR
  (num-next-hops :pointer)   ; DWORD* in/out
  (next-hop-handles :pointer))   ; INT_PTR* in/out
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。

use Win32::API;
my $RtmGetEnumNextHops = Win32::API::More->new('rtm',
    'DWORD RtmGetEnumNextHops(LPARAM RtmRegHandle, LPARAM EnumHandle, LPVOID NumNextHops, LPVOID NextHopHandles)');
# my $ret = $RtmGetEnumNextHops->Call($RtmRegHandle, $EnumHandle, $NumNextHops, $NextHopHandles);
# RtmRegHandle : INT_PTR -> LPARAM
# EnumHandle : INT_PTR -> LPARAM
# NumNextHops : DWORD* in/out -> LPVOID
# NextHopHandles : INT_PTR* 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。