RtmGetNextHopPointer

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

DWORD RtmGetNextHopPointer(
    INT_PTR RtmRegHandle,
    INT_PTR NextHopHandle,
    RTM_NEXTHOP_INFO** NextHopPointer
);

<DllImport("rtm.dll", ExactSpelling:=True)>
Public Shared Function RtmGetNextHopPointer(
    RtmRegHandle As IntPtr,   ' INT_PTR
    NextHopHandle As IntPtr,   ' INT_PTR
    NextHopPointer As IntPtr   ' RTM_NEXTHOP_INFO** in/out
) As UInteger
End Function

' RtmRegHandle : INT_PTR
' NextHopHandle : INT_PTR
' NextHopPointer : RTM_NEXTHOP_INFO** in/out
Declare PtrSafe Function RtmGetNextHopPointer Lib "rtm" ( _
    ByVal RtmRegHandle As LongPtr, _
    ByVal NextHopHandle As LongPtr, _
    ByVal NextHopPointer 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

RtmGetNextHopPointer = ctypes.windll.rtm.RtmGetNextHopPointer
RtmGetNextHopPointer.restype = wintypes.DWORD
RtmGetNextHopPointer.argtypes = [
    ctypes.c_ssize_t,  # RtmRegHandle : INT_PTR
    ctypes.c_ssize_t,  # NextHopHandle : INT_PTR
    ctypes.c_void_p,  # NextHopPointer : RTM_NEXTHOP_INFO** in/out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('rtm.dll')
RtmGetNextHopPointer = Fiddle::Function.new(
  lib['RtmGetNextHopPointer'],
  [
    Fiddle::TYPE_INTPTR_T,  # RtmRegHandle : INT_PTR
    Fiddle::TYPE_INTPTR_T,  # NextHopHandle : INT_PTR
    Fiddle::TYPE_VOIDP,  # NextHopPointer : RTM_NEXTHOP_INFO** in/out
  ],
  -Fiddle::TYPE_INT)

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

$sig = @"
[DllImport("rtm.dll")]
public static extern uint RtmGetNextHopPointer(IntPtr RtmRegHandle, IntPtr NextHopHandle, IntPtr NextHopPointer);
"@
$api = Add-Type -MemberDefinition $sig -Name 'rtm_RtmGetNextHopPointer' -Namespace Win32 -PassThru
# $api::RtmGetNextHopPointer(RtmRegHandle, NextHopHandle, NextHopPointer)

#uselib "rtm.dll"
#func global RtmGetNextHopPointer "RtmGetNextHopPointer" sptr, sptr, sptr
; RtmGetNextHopPointer RtmRegHandle, NextHopHandle, varptr(NextHopPointer)   ; 戻り値は stat
; RtmRegHandle : INT_PTR -> "sptr"
; NextHopHandle : INT_PTR -> "sptr"
; NextHopPointer : RTM_NEXTHOP_INFO** 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")
	procRtmGetNextHopPointer = rtm.NewProc("RtmGetNextHopPointer")
)

// RtmRegHandle (INT_PTR), NextHopHandle (INT_PTR), NextHopPointer (RTM_NEXTHOP_INFO** in/out)
r1, _, err := procRtmGetNextHopPointer.Call(
	uintptr(RtmRegHandle),
	uintptr(NextHopHandle),
	uintptr(NextHopPointer),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // DWORD

function RtmGetNextHopPointer(
  RtmRegHandle: NativeInt;   // INT_PTR
  NextHopHandle: NativeInt;   // INT_PTR
  NextHopPointer: Pointer   // RTM_NEXTHOP_INFO** in/out
): DWORD; stdcall;
  external 'rtm.dll' name 'RtmGetNextHopPointer';

result := DllCall("rtm\RtmGetNextHopPointer"
    , "Ptr", RtmRegHandle   ; INT_PTR
    , "Ptr", NextHopHandle   ; INT_PTR
    , "Ptr", NextHopPointer   ; RTM_NEXTHOP_INFO** in/out
    , "UInt")   ; return: DWORD

●RtmGetNextHopPointer(RtmRegHandle, NextHopHandle, NextHopPointer) = DLL("rtm.dll", "dword RtmGetNextHopPointer(int, int, void*)")
# 呼び出し: RtmGetNextHopPointer(RtmRegHandle, NextHopHandle, NextHopPointer)
# RtmRegHandle : INT_PTR -> "int"
# NextHopHandle : INT_PTR -> "int"
# NextHopPointer : RTM_NEXTHOP_INFO** 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 RtmGetNextHopPointer(
    RtmRegHandle: isize, // INT_PTR
    NextHopHandle: isize, // INT_PTR
    NextHopPointer: [*c][*c]RTM_NEXTHOP_INFO // RTM_NEXTHOP_INFO** in/out
) callconv(std.os.windows.WINAPI) u32;

proc RtmGetNextHopPointer(
    RtmRegHandle: int,  # INT_PTR
    NextHopHandle: int,  # INT_PTR
    NextHopPointer: ptr RTM_NEXTHOP_INFO  # RTM_NEXTHOP_INFO** in/out
): uint32 {.importc: "RtmGetNextHopPointer", stdcall, dynlib: "rtm.dll".}

pragma(lib, "rtm");
extern(Windows)
uint RtmGetNextHopPointer(
    ptrdiff_t RtmRegHandle,   // INT_PTR
    ptrdiff_t NextHopHandle,   // INT_PTR
    RTM_NEXTHOP_INFO** NextHopPointer   // RTM_NEXTHOP_INFO** in/out
);

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

local ffi = require("ffi")
ffi.cdef[[
uint32_t RtmGetNextHopPointer(
    intptr_t RtmRegHandle,
    intptr_t NextHopHandle,
    void* NextHopPointer);
]]
local rtm = ffi.load("rtm")
-- rtm.RtmGetNextHopPointer(RtmRegHandle, NextHopHandle, NextHopPointer)
-- RtmRegHandle : INT_PTR
-- NextHopHandle : INT_PTR
-- NextHopPointer : RTM_NEXTHOP_INFO** 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 RtmGetNextHopPointer = lib.func('__stdcall', 'RtmGetNextHopPointer', 'uint32_t', ['intptr_t', 'intptr_t', 'void *']);
// RtmGetNextHopPointer(RtmRegHandle, NextHopHandle, NextHopPointer)
// RtmRegHandle : INT_PTR -> 'intptr_t'
// NextHopHandle : INT_PTR -> 'intptr_t'
// NextHopPointer : RTM_NEXTHOP_INFO** in/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("rtm.dll", {
  RtmGetNextHopPointer: { parameters: ["isize", "isize", "pointer"], result: "u32" },
});
// lib.symbols.RtmGetNextHopPointer(RtmRegHandle, NextHopHandle, NextHopPointer)
// RtmRegHandle : INT_PTR -> "isize"
// NextHopHandle : INT_PTR -> "isize"
// NextHopPointer : RTM_NEXTHOP_INFO** 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 RtmGetNextHopPointer(
    intptr_t RtmRegHandle,
    intptr_t NextHopHandle,
    void* NextHopPointer);
C, "rtm.dll");
// $ffi->RtmGetNextHopPointer(RtmRegHandle, NextHopHandle, NextHopPointer);
// RtmRegHandle : INT_PTR
// NextHopHandle : INT_PTR
// NextHopPointer : RTM_NEXTHOP_INFO** 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 RtmGetNextHopPointer(
        long RtmRegHandle,   // INT_PTR
        long NextHopHandle,   // INT_PTR
        Pointer NextHopPointer   // RTM_NEXTHOP_INFO** in/out
    );
}

@[Link("rtm")]
lib Librtm
  fun RtmGetNextHopPointer = RtmGetNextHopPointer(
    RtmRegHandle : LibC::SSizeT,   # INT_PTR
    NextHopHandle : LibC::SSizeT,   # INT_PTR
    NextHopPointer : RTM_NEXTHOP_INFO**   # RTM_NEXTHOP_INFO** 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 RtmGetNextHopPointerNative = Uint32 Function(IntPtr, IntPtr, Pointer<Void>);
typedef RtmGetNextHopPointerDart = int Function(int, int, Pointer<Void>);
final RtmGetNextHopPointer = DynamicLibrary.open('rtm.dll')
    .lookupFunction<RtmGetNextHopPointerNative, RtmGetNextHopPointerDart>('RtmGetNextHopPointer');
// RtmRegHandle : INT_PTR -> IntPtr
// NextHopHandle : INT_PTR -> IntPtr
// NextHopPointer : RTM_NEXTHOP_INFO** in/out -> Pointer<Void>
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。

{$mode objfpc}{$H+}
function RtmGetNextHopPointer(
  RtmRegHandle: NativeInt;   // INT_PTR
  NextHopHandle: NativeInt;   // INT_PTR
  NextHopPointer: Pointer   // RTM_NEXTHOP_INFO** in/out
): DWORD; stdcall;
  external 'rtm.dll' name 'RtmGetNextHopPointer';

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

foreign import stdcall safe "RtmGetNextHopPointer"
  c_RtmGetNextHopPointer :: CIntPtr -> CIntPtr -> Ptr () -> IO Word32
-- RtmRegHandle : INT_PTR -> CIntPtr
-- NextHopHandle : INT_PTR -> CIntPtr
-- NextHopPointer : RTM_NEXTHOP_INFO** in/out -> Ptr ()
-- 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 rtmgetnexthoppointer =
  foreign "RtmGetNextHopPointer"
    (intptr_t @-> intptr_t @-> (ptr void) @-> returning uint32_t)
(* RtmRegHandle : INT_PTR -> intptr_t *)
(* NextHopHandle : INT_PTR -> intptr_t *)
(* NextHopPointer : RTM_NEXTHOP_INFO** in/out -> (ptr void) *)
(* 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 ("RtmGetNextHopPointer" rtm-get-next-hop-pointer :convention :stdcall) :uint32
  (rtm-reg-handle :int64)   ; INT_PTR
  (next-hop-handle :int64)   ; INT_PTR
  (next-hop-pointer :pointer))   ; RTM_NEXTHOP_INFO** in/out
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。

use Win32::API;
my $RtmGetNextHopPointer = Win32::API::More->new('rtm',
    'DWORD RtmGetNextHopPointer(LPARAM RtmRegHandle, LPARAM NextHopHandle, LPVOID NextHopPointer)');
# my $ret = $RtmGetNextHopPointer->Call($RtmRegHandle, $NextHopHandle, $NextHopPointer);
# RtmRegHandle : INT_PTR -> LPARAM
# NextHopHandle : INT_PTR -> LPARAM
# NextHopPointer : RTM_NEXTHOP_INFO** 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。