ホーム › NetworkManagement.IpHelper › PfSetLogBuffer

PfSetLogBuffer

関数

パケットフィルタのログ用バッファを設定する。

DLLIPHLPAPI.dll呼出規約winapi

シグネチャ

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

DWORD PfSetLogBuffer(
    BYTE* pbBuffer,
    DWORD dwSize,
    DWORD dwThreshold,
    DWORD dwEntries,
    DWORD* pdwLoggedEntries,
    DWORD* pdwLostEntries,
    DWORD* pdwSizeUsed
);

パラメーター

名前	型	方向	説明
pbBuffer	BYTE*	inout	ログ記録に使用するバッファへのポインタ。
dwSize	DWORD	in	ログバッファ全体のサイズ(バイト単位)。
dwThreshold	DWORD	in	イベント通知を発火させるしきい値(バイト単位)。
dwEntries	DWORD	in	バッファに格納可能なログエントリ数。
pdwLoggedEntries	DWORD*	inout	実際に記録されたエントリ数を受け取る出力ポインタ。
pdwLostEntries	DWORD*	inout	バッファ満杯などで失われたエントリ数を受け取る出力ポインタ。
pdwSizeUsed	DWORD*	inout	使用済みバッファサイズを受け取る出力ポインタ。

戻り値の型: DWORD

各言語での呼び出し定義

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

DWORD PfSetLogBuffer(
    BYTE* pbBuffer,
    DWORD dwSize,
    DWORD dwThreshold,
    DWORD dwEntries,
    DWORD* pdwLoggedEntries,
    DWORD* pdwLostEntries,
    DWORD* pdwSizeUsed
);

[DllImport("IPHLPAPI.dll", ExactSpelling = true)]
static extern uint PfSetLogBuffer(
    IntPtr pbBuffer,   // BYTE* in/out
    uint dwSize,   // DWORD
    uint dwThreshold,   // DWORD
    uint dwEntries,   // DWORD
    ref uint pdwLoggedEntries,   // DWORD* in/out
    ref uint pdwLostEntries,   // DWORD* in/out
    ref uint pdwSizeUsed   // DWORD* in/out
);

<DllImport("IPHLPAPI.dll", ExactSpelling:=True)>
Public Shared Function PfSetLogBuffer(
    pbBuffer As IntPtr,   ' BYTE* in/out
    dwSize As UInteger,   ' DWORD
    dwThreshold As UInteger,   ' DWORD
    dwEntries As UInteger,   ' DWORD
    ByRef pdwLoggedEntries As UInteger,   ' DWORD* in/out
    ByRef pdwLostEntries As UInteger,   ' DWORD* in/out
    ByRef pdwSizeUsed As UInteger   ' DWORD* in/out
) As UInteger
End Function

' pbBuffer : BYTE* in/out
' dwSize : DWORD
' dwThreshold : DWORD
' dwEntries : DWORD
' pdwLoggedEntries : DWORD* in/out
' pdwLostEntries : DWORD* in/out
' pdwSizeUsed : DWORD* in/out
Declare PtrSafe Function PfSetLogBuffer Lib "iphlpapi" ( _
    ByVal pbBuffer As LongPtr, _
    ByVal dwSize As Long, _
    ByVal dwThreshold As Long, _
    ByVal dwEntries As Long, _
    ByRef pdwLoggedEntries As Long, _
    ByRef pdwLostEntries As Long, _
    ByRef pdwSizeUsed 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

PfSetLogBuffer = ctypes.windll.iphlpapi.PfSetLogBuffer
PfSetLogBuffer.restype = wintypes.DWORD
PfSetLogBuffer.argtypes = [
    ctypes.POINTER(ctypes.c_ubyte),  # pbBuffer : BYTE* in/out
    wintypes.DWORD,  # dwSize : DWORD
    wintypes.DWORD,  # dwThreshold : DWORD
    wintypes.DWORD,  # dwEntries : DWORD
    ctypes.POINTER(wintypes.DWORD),  # pdwLoggedEntries : DWORD* in/out
    ctypes.POINTER(wintypes.DWORD),  # pdwLostEntries : DWORD* in/out
    ctypes.POINTER(wintypes.DWORD),  # pdwSizeUsed : DWORD* in/out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('IPHLPAPI.dll')
PfSetLogBuffer = Fiddle::Function.new(
  lib['PfSetLogBuffer'],
  [
    Fiddle::TYPE_VOIDP,  # pbBuffer : BYTE* in/out
    -Fiddle::TYPE_INT,  # dwSize : DWORD
    -Fiddle::TYPE_INT,  # dwThreshold : DWORD
    -Fiddle::TYPE_INT,  # dwEntries : DWORD
    Fiddle::TYPE_VOIDP,  # pdwLoggedEntries : DWORD* in/out
    Fiddle::TYPE_VOIDP,  # pdwLostEntries : DWORD* in/out
    Fiddle::TYPE_VOIDP,  # pdwSizeUsed : DWORD* in/out
  ],
  -Fiddle::TYPE_INT)

#[link(name = "iphlpapi")]
extern "system" {
    fn PfSetLogBuffer(
        pbBuffer: *mut u8,  // BYTE* in/out
        dwSize: u32,  // DWORD
        dwThreshold: u32,  // DWORD
        dwEntries: u32,  // DWORD
        pdwLoggedEntries: *mut u32,  // DWORD* in/out
        pdwLostEntries: *mut u32,  // DWORD* in/out
        pdwSizeUsed: *mut u32  // DWORD* in/out
    ) -> u32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("IPHLPAPI.dll")]
public static extern uint PfSetLogBuffer(IntPtr pbBuffer, uint dwSize, uint dwThreshold, uint dwEntries, ref uint pdwLoggedEntries, ref uint pdwLostEntries, ref uint pdwSizeUsed);
"@
$api = Add-Type -MemberDefinition $sig -Name 'IPHLPAPI_PfSetLogBuffer' -Namespace Win32 -PassThru
# $api::PfSetLogBuffer(pbBuffer, dwSize, dwThreshold, dwEntries, pdwLoggedEntries, pdwLostEntries, pdwSizeUsed)

#uselib "IPHLPAPI.dll"
#func global PfSetLogBuffer "PfSetLogBuffer" sptr, sptr, sptr, sptr, sptr, sptr, sptr
; PfSetLogBuffer varptr(pbBuffer), dwSize, dwThreshold, dwEntries, varptr(pdwLoggedEntries), varptr(pdwLostEntries), varptr(pdwSizeUsed)   ; 戻り値は stat
; pbBuffer : BYTE* in/out -> "sptr"
; dwSize : DWORD -> "sptr"
; dwThreshold : DWORD -> "sptr"
; dwEntries : DWORD -> "sptr"
; pdwLoggedEntries : DWORD* in/out -> "sptr"
; pdwLostEntries : DWORD* in/out -> "sptr"
; pdwSizeUsed : 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。

出力引数:

#uselib "IPHLPAPI.dll"
#cfunc global PfSetLogBuffer "PfSetLogBuffer" var, int, int, int, var, var, var
; res = PfSetLogBuffer(pbBuffer, dwSize, dwThreshold, dwEntries, pdwLoggedEntries, pdwLostEntries, pdwSizeUsed)
; pbBuffer : BYTE* in/out -> "var"
; dwSize : DWORD -> "int"
; dwThreshold : DWORD -> "int"
; dwEntries : DWORD -> "int"
; pdwLoggedEntries : DWORD* in/out -> "var"
; pdwLostEntries : DWORD* in/out -> "var"
; pdwSizeUsed : DWORD* in/out -> "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。#uselib "IPHLPAPI.dll"
#cfunc global PfSetLogBuffer "PfSetLogBuffer" sptr, int, int, int, sptr, sptr, sptr
; res = PfSetLogBuffer(varptr(pbBuffer), dwSize, dwThreshold, dwEntries, varptr(pdwLoggedEntries), varptr(pdwLostEntries), varptr(pdwSizeUsed))
; pbBuffer : BYTE* in/out -> "sptr"
; dwSize : DWORD -> "int"
; dwThreshold : DWORD -> "int"
; dwEntries : DWORD -> "int"
; pdwLoggedEntries : DWORD* in/out -> "sptr"
; pdwLostEntries : DWORD* in/out -> "sptr"
; pdwSizeUsed : DWORD* in/out -> "sptr"
; ※出力/バッファ引数はポインタ方式(token=sptr / 呼び出しは varptr(変数))。

出力引数:

; DWORD PfSetLogBuffer(BYTE* pbBuffer, DWORD dwSize, DWORD dwThreshold, DWORD dwEntries, DWORD* pdwLoggedEntries, DWORD* pdwLostEntries, DWORD* pdwSizeUsed)
#uselib "IPHLPAPI.dll"
#cfunc global PfSetLogBuffer "PfSetLogBuffer" var, int, int, int, var, var, var
; res = PfSetLogBuffer(pbBuffer, dwSize, dwThreshold, dwEntries, pdwLoggedEntries, pdwLostEntries, pdwSizeUsed)
; pbBuffer : BYTE* in/out -> "var"
; dwSize : DWORD -> "int"
; dwThreshold : DWORD -> "int"
; dwEntries : DWORD -> "int"
; pdwLoggedEntries : DWORD* in/out -> "var"
; pdwLostEntries : DWORD* in/out -> "var"
; pdwSizeUsed : DWORD* in/out -> "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。; DWORD PfSetLogBuffer(BYTE* pbBuffer, DWORD dwSize, DWORD dwThreshold, DWORD dwEntries, DWORD* pdwLoggedEntries, DWORD* pdwLostEntries, DWORD* pdwSizeUsed)
#uselib "IPHLPAPI.dll"
#cfunc global PfSetLogBuffer "PfSetLogBuffer" intptr, int, int, int, intptr, intptr, intptr
; res = PfSetLogBuffer(varptr(pbBuffer), dwSize, dwThreshold, dwEntries, varptr(pdwLoggedEntries), varptr(pdwLostEntries), varptr(pdwSizeUsed))
; pbBuffer : BYTE* in/out -> "intptr"
; dwSize : DWORD -> "int"
; dwThreshold : DWORD -> "int"
; dwEntries : DWORD -> "int"
; pdwLoggedEntries : DWORD* in/out -> "intptr"
; pdwLostEntries : DWORD* in/out -> "intptr"
; pdwSizeUsed : DWORD* in/out -> "intptr"
; ※出力/バッファ引数はポインタ方式(token=intptr / 呼び出しは varptr(変数))。

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

var (
	iphlpapi = windows.NewLazySystemDLL("IPHLPAPI.dll")
	procPfSetLogBuffer = iphlpapi.NewProc("PfSetLogBuffer")
)

// pbBuffer (BYTE* in/out), dwSize (DWORD), dwThreshold (DWORD), dwEntries (DWORD), pdwLoggedEntries (DWORD* in/out), pdwLostEntries (DWORD* in/out), pdwSizeUsed (DWORD* in/out)
r1, _, err := procPfSetLogBuffer.Call(
	uintptr(pbBuffer),
	uintptr(dwSize),
	uintptr(dwThreshold),
	uintptr(dwEntries),
	uintptr(pdwLoggedEntries),
	uintptr(pdwLostEntries),
	uintptr(pdwSizeUsed),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // DWORD

function PfSetLogBuffer(
  pbBuffer: Pointer;   // BYTE* in/out
  dwSize: DWORD;   // DWORD
  dwThreshold: DWORD;   // DWORD
  dwEntries: DWORD;   // DWORD
  pdwLoggedEntries: Pointer;   // DWORD* in/out
  pdwLostEntries: Pointer;   // DWORD* in/out
  pdwSizeUsed: Pointer   // DWORD* in/out
): DWORD; stdcall;
  external 'IPHLPAPI.dll' name 'PfSetLogBuffer';

result := DllCall("IPHLPAPI\PfSetLogBuffer"
    , "Ptr", pbBuffer   ; BYTE* in/out
    , "UInt", dwSize   ; DWORD
    , "UInt", dwThreshold   ; DWORD
    , "UInt", dwEntries   ; DWORD
    , "Ptr", pdwLoggedEntries   ; DWORD* in/out
    , "Ptr", pdwLostEntries   ; DWORD* in/out
    , "Ptr", pdwSizeUsed   ; DWORD* in/out
    , "UInt")   ; return: DWORD

●PfSetLogBuffer(pbBuffer, dwSize, dwThreshold, dwEntries, pdwLoggedEntries, pdwLostEntries, pdwSizeUsed) = DLL("IPHLPAPI.dll", "dword PfSetLogBuffer(void*, dword, dword, dword, void*, void*, void*)")
# 呼び出し: PfSetLogBuffer(pbBuffer, dwSize, dwThreshold, dwEntries, pdwLoggedEntries, pdwLostEntries, pdwSizeUsed)
# pbBuffer : BYTE* in/out -> "void*"
# dwSize : DWORD -> "dword"
# dwThreshold : DWORD -> "dword"
# dwEntries : DWORD -> "dword"
# pdwLoggedEntries : DWORD* in/out -> "void*"
# pdwLostEntries : DWORD* in/out -> "void*"
# pdwSizeUsed : 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 "iphlpapi" fn PfSetLogBuffer(
    pbBuffer: [*c]u8, // BYTE* in/out
    dwSize: u32, // DWORD
    dwThreshold: u32, // DWORD
    dwEntries: u32, // DWORD
    pdwLoggedEntries: [*c]u32, // DWORD* in/out
    pdwLostEntries: [*c]u32, // DWORD* in/out
    pdwSizeUsed: [*c]u32 // DWORD* in/out
) callconv(std.os.windows.WINAPI) u32;

proc PfSetLogBuffer(
    pbBuffer: ptr uint8,  # BYTE* in/out
    dwSize: uint32,  # DWORD
    dwThreshold: uint32,  # DWORD
    dwEntries: uint32,  # DWORD
    pdwLoggedEntries: ptr uint32,  # DWORD* in/out
    pdwLostEntries: ptr uint32,  # DWORD* in/out
    pdwSizeUsed: ptr uint32  # DWORD* in/out
): uint32 {.importc: "PfSetLogBuffer", stdcall, dynlib: "IPHLPAPI.dll".}

pragma(lib, "iphlpapi");
extern(Windows)
uint PfSetLogBuffer(
    ubyte* pbBuffer,   // BYTE* in/out
    uint dwSize,   // DWORD
    uint dwThreshold,   // DWORD
    uint dwEntries,   // DWORD
    uint* pdwLoggedEntries,   // DWORD* in/out
    uint* pdwLostEntries,   // DWORD* in/out
    uint* pdwSizeUsed   // DWORD* in/out
);

ccall((:PfSetLogBuffer, "IPHLPAPI.dll"), stdcall, UInt32,
      (Ptr{UInt8}, UInt32, UInt32, UInt32, Ptr{UInt32}, Ptr{UInt32}, Ptr{UInt32}),
      pbBuffer, dwSize, dwThreshold, dwEntries, pdwLoggedEntries, pdwLostEntries, pdwSizeUsed)
# pbBuffer : BYTE* in/out -> Ptr{UInt8}
# dwSize : DWORD -> UInt32
# dwThreshold : DWORD -> UInt32
# dwEntries : DWORD -> UInt32
# pdwLoggedEntries : DWORD* in/out -> Ptr{UInt32}
# pdwLostEntries : DWORD* in/out -> Ptr{UInt32}
# pdwSizeUsed : 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 PfSetLogBuffer(
    uint8_t* pbBuffer,
    uint32_t dwSize,
    uint32_t dwThreshold,
    uint32_t dwEntries,
    uint32_t* pdwLoggedEntries,
    uint32_t* pdwLostEntries,
    uint32_t* pdwSizeUsed);
]]
local iphlpapi = ffi.load("iphlpapi")
-- iphlpapi.PfSetLogBuffer(pbBuffer, dwSize, dwThreshold, dwEntries, pdwLoggedEntries, pdwLostEntries, pdwSizeUsed)
-- pbBuffer : BYTE* in/out
-- dwSize : DWORD
-- dwThreshold : DWORD
-- dwEntries : DWORD
-- pdwLoggedEntries : DWORD* in/out
-- pdwLostEntries : DWORD* in/out
-- pdwSizeUsed : 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('IPHLPAPI.dll');
const PfSetLogBuffer = lib.func('__stdcall', 'PfSetLogBuffer', 'uint32_t', ['uint8_t *', 'uint32_t', 'uint32_t', 'uint32_t', 'uint32_t *', 'uint32_t *', 'uint32_t *']);
// PfSetLogBuffer(pbBuffer, dwSize, dwThreshold, dwEntries, pdwLoggedEntries, pdwLostEntries, pdwSizeUsed)
// pbBuffer : BYTE* in/out -> 'uint8_t *'
// dwSize : DWORD -> 'uint32_t'
// dwThreshold : DWORD -> 'uint32_t'
// dwEntries : DWORD -> 'uint32_t'
// pdwLoggedEntries : DWORD* in/out -> 'uint32_t *'
// pdwLostEntries : DWORD* in/out -> 'uint32_t *'
// pdwSizeUsed : 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("IPHLPAPI.dll", {
  PfSetLogBuffer: { parameters: ["pointer", "u32", "u32", "u32", "pointer", "pointer", "pointer"], result: "u32" },
});
// lib.symbols.PfSetLogBuffer(pbBuffer, dwSize, dwThreshold, dwEntries, pdwLoggedEntries, pdwLostEntries, pdwSizeUsed)
// pbBuffer : BYTE* in/out -> "pointer"
// dwSize : DWORD -> "u32"
// dwThreshold : DWORD -> "u32"
// dwEntries : DWORD -> "u32"
// pdwLoggedEntries : DWORD* in/out -> "pointer"
// pdwLostEntries : DWORD* in/out -> "pointer"
// pdwSizeUsed : 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 PfSetLogBuffer(
    uint8_t* pbBuffer,
    uint32_t dwSize,
    uint32_t dwThreshold,
    uint32_t dwEntries,
    uint32_t* pdwLoggedEntries,
    uint32_t* pdwLostEntries,
    uint32_t* pdwSizeUsed);
C, "IPHLPAPI.dll");
// $ffi->PfSetLogBuffer(pbBuffer, dwSize, dwThreshold, dwEntries, pdwLoggedEntries, pdwLostEntries, pdwSizeUsed);
// pbBuffer : BYTE* in/out
// dwSize : DWORD
// dwThreshold : DWORD
// dwEntries : DWORD
// pdwLoggedEntries : DWORD* in/out
// pdwLostEntries : DWORD* in/out
// pdwSizeUsed : 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 Iphlpapi extends StdCallLibrary {
    Iphlpapi INSTANCE = Native.load("iphlpapi", Iphlpapi.class);
    int PfSetLogBuffer(
        byte[] pbBuffer,   // BYTE* in/out
        int dwSize,   // DWORD
        int dwThreshold,   // DWORD
        int dwEntries,   // DWORD
        IntByReference pdwLoggedEntries,   // DWORD* in/out
        IntByReference pdwLostEntries,   // DWORD* in/out
        IntByReference pdwSizeUsed   // DWORD* in/out
    );
}

@[Link("iphlpapi")]
lib LibIPHLPAPI
  fun PfSetLogBuffer = PfSetLogBuffer(
    pbBuffer : UInt8*,   # BYTE* in/out
    dwSize : UInt32,   # DWORD
    dwThreshold : UInt32,   # DWORD
    dwEntries : UInt32,   # DWORD
    pdwLoggedEntries : UInt32*,   # DWORD* in/out
    pdwLostEntries : UInt32*,   # DWORD* in/out
    pdwSizeUsed : 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 PfSetLogBufferNative = Uint32 Function(Pointer<Uint8>, Uint32, Uint32, Uint32, Pointer<Uint32>, Pointer<Uint32>, Pointer<Uint32>);
typedef PfSetLogBufferDart = int Function(Pointer<Uint8>, int, int, int, Pointer<Uint32>, Pointer<Uint32>, Pointer<Uint32>);
final PfSetLogBuffer = DynamicLibrary.open('IPHLPAPI.dll')
    .lookupFunction<PfSetLogBufferNative, PfSetLogBufferDart>('PfSetLogBuffer');
// pbBuffer : BYTE* in/out -> Pointer<Uint8>
// dwSize : DWORD -> Uint32
// dwThreshold : DWORD -> Uint32
// dwEntries : DWORD -> Uint32
// pdwLoggedEntries : DWORD* in/out -> Pointer<Uint32>
// pdwLostEntries : DWORD* in/out -> Pointer<Uint32>
// pdwSizeUsed : DWORD* in/out -> Pointer<Uint32>
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。

{$mode objfpc}{$H+}
function PfSetLogBuffer(
  pbBuffer: Pointer;   // BYTE* in/out
  dwSize: DWORD;   // DWORD
  dwThreshold: DWORD;   // DWORD
  dwEntries: DWORD;   // DWORD
  pdwLoggedEntries: Pointer;   // DWORD* in/out
  pdwLostEntries: Pointer;   // DWORD* in/out
  pdwSizeUsed: Pointer   // DWORD* in/out
): DWORD; stdcall;
  external 'IPHLPAPI.dll' name 'PfSetLogBuffer';

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

foreign import stdcall safe "PfSetLogBuffer"
  c_PfSetLogBuffer :: Ptr Word8 -> Word32 -> Word32 -> Word32 -> Ptr Word32 -> Ptr Word32 -> Ptr Word32 -> IO Word32
-- pbBuffer : BYTE* in/out -> Ptr Word8
-- dwSize : DWORD -> Word32
-- dwThreshold : DWORD -> Word32
-- dwEntries : DWORD -> Word32
-- pdwLoggedEntries : DWORD* in/out -> Ptr Word32
-- pdwLostEntries : DWORD* in/out -> Ptr Word32
-- pdwSizeUsed : 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 pfsetlogbuffer =
  foreign "PfSetLogBuffer"
    ((ptr uint8_t) @-> uint32_t @-> uint32_t @-> uint32_t @-> (ptr uint32_t) @-> (ptr uint32_t) @-> (ptr uint32_t) @-> returning uint32_t)
(* pbBuffer : BYTE* in/out -> (ptr uint8_t) *)
(* dwSize : DWORD -> uint32_t *)
(* dwThreshold : DWORD -> uint32_t *)
(* dwEntries : DWORD -> uint32_t *)
(* pdwLoggedEntries : DWORD* in/out -> (ptr uint32_t) *)
(* pdwLostEntries : DWORD* in/out -> (ptr uint32_t) *)
(* pdwSizeUsed : 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 iphlpapi (t "IPHLPAPI.dll"))
(cffi:use-foreign-library iphlpapi)

(cffi:defcfun ("PfSetLogBuffer" pf-set-log-buffer :convention :stdcall) :uint32
  (pb-buffer :pointer)   ; BYTE* in/out
  (dw-size :uint32)   ; DWORD
  (dw-threshold :uint32)   ; DWORD
  (dw-entries :uint32)   ; DWORD
  (pdw-logged-entries :pointer)   ; DWORD* in/out
  (pdw-lost-entries :pointer)   ; DWORD* in/out
  (pdw-size-used :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 $PfSetLogBuffer = Win32::API::More->new('IPHLPAPI',
    'DWORD PfSetLogBuffer(LPVOID pbBuffer, DWORD dwSize, DWORD dwThreshold, DWORD dwEntries, LPVOID pdwLoggedEntries, LPVOID pdwLostEntries, LPVOID pdwSizeUsed)');
# my $ret = $PfSetLogBuffer->Call($pbBuffer, $dwSize, $dwThreshold, $dwEntries, $pdwLoggedEntries, $pdwLostEntries, $pdwSizeUsed);
# pbBuffer : BYTE* in/out -> LPVOID
# dwSize : DWORD -> DWORD
# dwThreshold : DWORD -> DWORD
# dwEntries : DWORD -> DWORD
# pdwLoggedEntries : DWORD* in/out -> LPVOID
# pdwLostEntries : DWORD* in/out -> LPVOID
# pdwSizeUsed : 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。