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MprConfigTransportEnum

関数

ルーター構成内のトランスポート一覧を列挙する。

DLLMPRAPI.dll呼出規約winapi対応OSwindowsserver2000

シグネチャ

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

DWORD MprConfigTransportEnum(
    HANDLE hMprConfig,
    DWORD dwLevel,
    BYTE** lplpBuffer,
    DWORD dwPrefMaxLen,
    DWORD* lpdwEntriesRead,
    DWORD* lpdwTotalEntries,
    DWORD* lpdwResumeHandle   // optional
);

パラメーター

名前	型	方向	説明
hMprConfig	HANDLE	in	MprConfigServerConnectで取得した構成ハンドル。
dwLevel	DWORD	in	返される情報のレベルを示す値。
lplpBuffer	BYTE**	out	列挙されたトランスポート情報の配列を格納したバッファへのポインタを受け取る。
dwPrefMaxLen	DWORD	in	返すデータの推奨最大バイト数。-1で全件を一度に返す。
lpdwEntriesRead	DWORD*	out	今回読み取られたエントリ数を受け取るポインタ。
lpdwTotalEntries	DWORD*	out	列挙可能なエントリの総数を受け取るポインタ。
lpdwResumeHandle	DWORD*	inoutoptional	列挙継続位置を保持するハンドルへのポインタ。初回は0を指す。不要ならNULL可。

戻り値の型: DWORD

各言語での呼び出し定義

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

DWORD MprConfigTransportEnum(
    HANDLE hMprConfig,
    DWORD dwLevel,
    BYTE** lplpBuffer,
    DWORD dwPrefMaxLen,
    DWORD* lpdwEntriesRead,
    DWORD* lpdwTotalEntries,
    DWORD* lpdwResumeHandle   // optional
);

[DllImport("MPRAPI.dll", ExactSpelling = true)]
static extern uint MprConfigTransportEnum(
    IntPtr hMprConfig,   // HANDLE
    uint dwLevel,   // DWORD
    IntPtr lplpBuffer,   // BYTE** out
    uint dwPrefMaxLen,   // DWORD
    out uint lpdwEntriesRead,   // DWORD* out
    out uint lpdwTotalEntries,   // DWORD* out
    IntPtr lpdwResumeHandle   // DWORD* optional, in/out
);

<DllImport("MPRAPI.dll", ExactSpelling:=True)>
Public Shared Function MprConfigTransportEnum(
    hMprConfig As IntPtr,   ' HANDLE
    dwLevel As UInteger,   ' DWORD
    lplpBuffer As IntPtr,   ' BYTE** out
    dwPrefMaxLen As UInteger,   ' DWORD
    <Out> ByRef lpdwEntriesRead As UInteger,   ' DWORD* out
    <Out> ByRef lpdwTotalEntries As UInteger,   ' DWORD* out
    lpdwResumeHandle As IntPtr   ' DWORD* optional, in/out
) As UInteger
End Function

' hMprConfig : HANDLE
' dwLevel : DWORD
' lplpBuffer : BYTE** out
' dwPrefMaxLen : DWORD
' lpdwEntriesRead : DWORD* out
' lpdwTotalEntries : DWORD* out
' lpdwResumeHandle : DWORD* optional, in/out
Declare PtrSafe Function MprConfigTransportEnum Lib "mprapi" ( _
    ByVal hMprConfig As LongPtr, _
    ByVal dwLevel As Long, _
    ByVal lplpBuffer As LongPtr, _
    ByVal dwPrefMaxLen As Long, _
    ByRef lpdwEntriesRead As Long, _
    ByRef lpdwTotalEntries As Long, _
    ByVal lpdwResumeHandle 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

MprConfigTransportEnum = ctypes.windll.mprapi.MprConfigTransportEnum
MprConfigTransportEnum.restype = wintypes.DWORD
MprConfigTransportEnum.argtypes = [
    wintypes.HANDLE,  # hMprConfig : HANDLE
    wintypes.DWORD,  # dwLevel : DWORD
    ctypes.c_void_p,  # lplpBuffer : BYTE** out
    wintypes.DWORD,  # dwPrefMaxLen : DWORD
    ctypes.POINTER(wintypes.DWORD),  # lpdwEntriesRead : DWORD* out
    ctypes.POINTER(wintypes.DWORD),  # lpdwTotalEntries : DWORD* out
    ctypes.POINTER(wintypes.DWORD),  # lpdwResumeHandle : DWORD* optional, in/out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('MPRAPI.dll')
MprConfigTransportEnum = Fiddle::Function.new(
  lib['MprConfigTransportEnum'],
  [
    Fiddle::TYPE_VOIDP,  # hMprConfig : HANDLE
    -Fiddle::TYPE_INT,  # dwLevel : DWORD
    Fiddle::TYPE_VOIDP,  # lplpBuffer : BYTE** out
    -Fiddle::TYPE_INT,  # dwPrefMaxLen : DWORD
    Fiddle::TYPE_VOIDP,  # lpdwEntriesRead : DWORD* out
    Fiddle::TYPE_VOIDP,  # lpdwTotalEntries : DWORD* out
    Fiddle::TYPE_VOIDP,  # lpdwResumeHandle : DWORD* optional, in/out
  ],
  -Fiddle::TYPE_INT)

#[link(name = "mprapi")]
extern "system" {
    fn MprConfigTransportEnum(
        hMprConfig: *mut core::ffi::c_void,  // HANDLE
        dwLevel: u32,  // DWORD
        lplpBuffer: *mut *mut u8,  // BYTE** out
        dwPrefMaxLen: u32,  // DWORD
        lpdwEntriesRead: *mut u32,  // DWORD* out
        lpdwTotalEntries: *mut u32,  // DWORD* out
        lpdwResumeHandle: *mut u32  // DWORD* optional, in/out
    ) -> u32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("MPRAPI.dll")]
public static extern uint MprConfigTransportEnum(IntPtr hMprConfig, uint dwLevel, IntPtr lplpBuffer, uint dwPrefMaxLen, out uint lpdwEntriesRead, out uint lpdwTotalEntries, IntPtr lpdwResumeHandle);
"@
$api = Add-Type -MemberDefinition $sig -Name 'MPRAPI_MprConfigTransportEnum' -Namespace Win32 -PassThru
# $api::MprConfigTransportEnum(hMprConfig, dwLevel, lplpBuffer, dwPrefMaxLen, lpdwEntriesRead, lpdwTotalEntries, lpdwResumeHandle)

#uselib "MPRAPI.dll"
#func global MprConfigTransportEnum "MprConfigTransportEnum" sptr, sptr, sptr, sptr, sptr, sptr, sptr
; MprConfigTransportEnum hMprConfig, dwLevel, varptr(lplpBuffer), dwPrefMaxLen, varptr(lpdwEntriesRead), varptr(lpdwTotalEntries), varptr(lpdwResumeHandle)   ; 戻り値は stat
; hMprConfig : HANDLE -> "sptr"
; dwLevel : DWORD -> "sptr"
; lplpBuffer : BYTE** out -> "sptr"
; dwPrefMaxLen : DWORD -> "sptr"
; lpdwEntriesRead : DWORD* out -> "sptr"
; lpdwTotalEntries : DWORD* out -> "sptr"
; lpdwResumeHandle : DWORD* optional, 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 "MPRAPI.dll"
#cfunc global MprConfigTransportEnum "MprConfigTransportEnum" sptr, int, var, int, var, var, var
; res = MprConfigTransportEnum(hMprConfig, dwLevel, lplpBuffer, dwPrefMaxLen, lpdwEntriesRead, lpdwTotalEntries, lpdwResumeHandle)
; hMprConfig : HANDLE -> "sptr"
; dwLevel : DWORD -> "int"
; lplpBuffer : BYTE** out -> "var"
; dwPrefMaxLen : DWORD -> "int"
; lpdwEntriesRead : DWORD* out -> "var"
; lpdwTotalEntries : DWORD* out -> "var"
; lpdwResumeHandle : DWORD* optional, 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 "MPRAPI.dll"
#cfunc global MprConfigTransportEnum "MprConfigTransportEnum" sptr, int, sptr, int, sptr, sptr, sptr
; res = MprConfigTransportEnum(hMprConfig, dwLevel, varptr(lplpBuffer), dwPrefMaxLen, varptr(lpdwEntriesRead), varptr(lpdwTotalEntries), varptr(lpdwResumeHandle))
; hMprConfig : HANDLE -> "sptr"
; dwLevel : DWORD -> "int"
; lplpBuffer : BYTE** out -> "sptr"
; dwPrefMaxLen : DWORD -> "int"
; lpdwEntriesRead : DWORD* out -> "sptr"
; lpdwTotalEntries : DWORD* out -> "sptr"
; lpdwResumeHandle : DWORD* optional, 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 MprConfigTransportEnum(HANDLE hMprConfig, DWORD dwLevel, BYTE** lplpBuffer, DWORD dwPrefMaxLen, DWORD* lpdwEntriesRead, DWORD* lpdwTotalEntries, DWORD* lpdwResumeHandle)
#uselib "MPRAPI.dll"
#cfunc global MprConfigTransportEnum "MprConfigTransportEnum" intptr, int, var, int, var, var, var
; res = MprConfigTransportEnum(hMprConfig, dwLevel, lplpBuffer, dwPrefMaxLen, lpdwEntriesRead, lpdwTotalEntries, lpdwResumeHandle)
; hMprConfig : HANDLE -> "intptr"
; dwLevel : DWORD -> "int"
; lplpBuffer : BYTE** out -> "var"
; dwPrefMaxLen : DWORD -> "int"
; lpdwEntriesRead : DWORD* out -> "var"
; lpdwTotalEntries : DWORD* out -> "var"
; lpdwResumeHandle : DWORD* optional, 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 MprConfigTransportEnum(HANDLE hMprConfig, DWORD dwLevel, BYTE** lplpBuffer, DWORD dwPrefMaxLen, DWORD* lpdwEntriesRead, DWORD* lpdwTotalEntries, DWORD* lpdwResumeHandle)
#uselib "MPRAPI.dll"
#cfunc global MprConfigTransportEnum "MprConfigTransportEnum" intptr, int, intptr, int, intptr, intptr, intptr
; res = MprConfigTransportEnum(hMprConfig, dwLevel, varptr(lplpBuffer), dwPrefMaxLen, varptr(lpdwEntriesRead), varptr(lpdwTotalEntries), varptr(lpdwResumeHandle))
; hMprConfig : HANDLE -> "intptr"
; dwLevel : DWORD -> "int"
; lplpBuffer : BYTE** out -> "intptr"
; dwPrefMaxLen : DWORD -> "int"
; lpdwEntriesRead : DWORD* out -> "intptr"
; lpdwTotalEntries : DWORD* out -> "intptr"
; lpdwResumeHandle : DWORD* optional, 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 (
	mprapi = windows.NewLazySystemDLL("MPRAPI.dll")
	procMprConfigTransportEnum = mprapi.NewProc("MprConfigTransportEnum")
)

// hMprConfig (HANDLE), dwLevel (DWORD), lplpBuffer (BYTE** out), dwPrefMaxLen (DWORD), lpdwEntriesRead (DWORD* out), lpdwTotalEntries (DWORD* out), lpdwResumeHandle (DWORD* optional, in/out)
r1, _, err := procMprConfigTransportEnum.Call(
	uintptr(hMprConfig),
	uintptr(dwLevel),
	uintptr(lplpBuffer),
	uintptr(dwPrefMaxLen),
	uintptr(lpdwEntriesRead),
	uintptr(lpdwTotalEntries),
	uintptr(lpdwResumeHandle),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // DWORD

function MprConfigTransportEnum(
  hMprConfig: THandle;   // HANDLE
  dwLevel: DWORD;   // DWORD
  lplpBuffer: Pointer;   // BYTE** out
  dwPrefMaxLen: DWORD;   // DWORD
  lpdwEntriesRead: Pointer;   // DWORD* out
  lpdwTotalEntries: Pointer;   // DWORD* out
  lpdwResumeHandle: Pointer   // DWORD* optional, in/out
): DWORD; stdcall;
  external 'MPRAPI.dll' name 'MprConfigTransportEnum';

result := DllCall("MPRAPI\MprConfigTransportEnum"
    , "Ptr", hMprConfig   ; HANDLE
    , "UInt", dwLevel   ; DWORD
    , "Ptr", lplpBuffer   ; BYTE** out
    , "UInt", dwPrefMaxLen   ; DWORD
    , "Ptr", lpdwEntriesRead   ; DWORD* out
    , "Ptr", lpdwTotalEntries   ; DWORD* out
    , "Ptr", lpdwResumeHandle   ; DWORD* optional, in/out
    , "UInt")   ; return: DWORD

●MprConfigTransportEnum(hMprConfig, dwLevel, lplpBuffer, dwPrefMaxLen, lpdwEntriesRead, lpdwTotalEntries, lpdwResumeHandle) = DLL("MPRAPI.dll", "dword MprConfigTransportEnum(void*, dword, void*, dword, void*, void*, void*)")
# 呼び出し: MprConfigTransportEnum(hMprConfig, dwLevel, lplpBuffer, dwPrefMaxLen, lpdwEntriesRead, lpdwTotalEntries, lpdwResumeHandle)
# hMprConfig : HANDLE -> "void*"
# dwLevel : DWORD -> "dword"
# lplpBuffer : BYTE** out -> "void*"
# dwPrefMaxLen : DWORD -> "dword"
# lpdwEntriesRead : DWORD* out -> "void*"
# lpdwTotalEntries : DWORD* out -> "void*"
# lpdwResumeHandle : DWORD* optional, 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 "mprapi" fn MprConfigTransportEnum(
    hMprConfig: ?*anyopaque, // HANDLE
    dwLevel: u32, // DWORD
    lplpBuffer: [*c][*c]u8, // BYTE** out
    dwPrefMaxLen: u32, // DWORD
    lpdwEntriesRead: [*c]u32, // DWORD* out
    lpdwTotalEntries: [*c]u32, // DWORD* out
    lpdwResumeHandle: [*c]u32 // DWORD* optional, in/out
) callconv(std.os.windows.WINAPI) u32;

proc MprConfigTransportEnum(
    hMprConfig: pointer,  # HANDLE
    dwLevel: uint32,  # DWORD
    lplpBuffer: ptr uint8,  # BYTE** out
    dwPrefMaxLen: uint32,  # DWORD
    lpdwEntriesRead: ptr uint32,  # DWORD* out
    lpdwTotalEntries: ptr uint32,  # DWORD* out
    lpdwResumeHandle: ptr uint32  # DWORD* optional, in/out
): uint32 {.importc: "MprConfigTransportEnum", stdcall, dynlib: "MPRAPI.dll".}

pragma(lib, "mprapi");
extern(Windows)
uint MprConfigTransportEnum(
    void* hMprConfig,   // HANDLE
    uint dwLevel,   // DWORD
    ubyte** lplpBuffer,   // BYTE** out
    uint dwPrefMaxLen,   // DWORD
    uint* lpdwEntriesRead,   // DWORD* out
    uint* lpdwTotalEntries,   // DWORD* out
    uint* lpdwResumeHandle   // DWORD* optional, in/out
);

ccall((:MprConfigTransportEnum, "MPRAPI.dll"), stdcall, UInt32,
      (Ptr{Cvoid}, UInt32, Ptr{UInt8}, UInt32, Ptr{UInt32}, Ptr{UInt32}, Ptr{UInt32}),
      hMprConfig, dwLevel, lplpBuffer, dwPrefMaxLen, lpdwEntriesRead, lpdwTotalEntries, lpdwResumeHandle)
# hMprConfig : HANDLE -> Ptr{Cvoid}
# dwLevel : DWORD -> UInt32
# lplpBuffer : BYTE** out -> Ptr{UInt8}
# dwPrefMaxLen : DWORD -> UInt32
# lpdwEntriesRead : DWORD* out -> Ptr{UInt32}
# lpdwTotalEntries : DWORD* out -> Ptr{UInt32}
# lpdwResumeHandle : DWORD* optional, 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 MprConfigTransportEnum(
    void* hMprConfig,
    uint32_t dwLevel,
    uint8_t** lplpBuffer,
    uint32_t dwPrefMaxLen,
    uint32_t* lpdwEntriesRead,
    uint32_t* lpdwTotalEntries,
    uint32_t* lpdwResumeHandle);
]]
local mprapi = ffi.load("mprapi")
-- mprapi.MprConfigTransportEnum(hMprConfig, dwLevel, lplpBuffer, dwPrefMaxLen, lpdwEntriesRead, lpdwTotalEntries, lpdwResumeHandle)
-- hMprConfig : HANDLE
-- dwLevel : DWORD
-- lplpBuffer : BYTE** out
-- dwPrefMaxLen : DWORD
-- lpdwEntriesRead : DWORD* out
-- lpdwTotalEntries : DWORD* out
-- lpdwResumeHandle : DWORD* optional, 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('MPRAPI.dll');
const MprConfigTransportEnum = lib.func('__stdcall', 'MprConfigTransportEnum', 'uint32_t', ['void *', 'uint32_t', 'uint8_t *', 'uint32_t', 'uint32_t *', 'uint32_t *', 'uint32_t *']);
// MprConfigTransportEnum(hMprConfig, dwLevel, lplpBuffer, dwPrefMaxLen, lpdwEntriesRead, lpdwTotalEntries, lpdwResumeHandle)
// hMprConfig : HANDLE -> 'void *'
// dwLevel : DWORD -> 'uint32_t'
// lplpBuffer : BYTE** out -> 'uint8_t *'
// dwPrefMaxLen : DWORD -> 'uint32_t'
// lpdwEntriesRead : DWORD* out -> 'uint32_t *'
// lpdwTotalEntries : DWORD* out -> 'uint32_t *'
// lpdwResumeHandle : DWORD* optional, 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("MPRAPI.dll", {
  MprConfigTransportEnum: { parameters: ["pointer", "u32", "pointer", "u32", "pointer", "pointer", "pointer"], result: "u32" },
});
// lib.symbols.MprConfigTransportEnum(hMprConfig, dwLevel, lplpBuffer, dwPrefMaxLen, lpdwEntriesRead, lpdwTotalEntries, lpdwResumeHandle)
// hMprConfig : HANDLE -> "pointer"
// dwLevel : DWORD -> "u32"
// lplpBuffer : BYTE** out -> "pointer"
// dwPrefMaxLen : DWORD -> "u32"
// lpdwEntriesRead : DWORD* out -> "pointer"
// lpdwTotalEntries : DWORD* out -> "pointer"
// lpdwResumeHandle : DWORD* optional, 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 MprConfigTransportEnum(
    void* hMprConfig,
    uint32_t dwLevel,
    uint8_t** lplpBuffer,
    uint32_t dwPrefMaxLen,
    uint32_t* lpdwEntriesRead,
    uint32_t* lpdwTotalEntries,
    uint32_t* lpdwResumeHandle);
C, "MPRAPI.dll");
// $ffi->MprConfigTransportEnum(hMprConfig, dwLevel, lplpBuffer, dwPrefMaxLen, lpdwEntriesRead, lpdwTotalEntries, lpdwResumeHandle);
// hMprConfig : HANDLE
// dwLevel : DWORD
// lplpBuffer : BYTE** out
// dwPrefMaxLen : DWORD
// lpdwEntriesRead : DWORD* out
// lpdwTotalEntries : DWORD* out
// lpdwResumeHandle : DWORD* optional, 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 Mprapi extends StdCallLibrary {
    Mprapi INSTANCE = Native.load("mprapi", Mprapi.class);
    int MprConfigTransportEnum(
        Pointer hMprConfig,   // HANDLE
        int dwLevel,   // DWORD
        Pointer lplpBuffer,   // BYTE** out
        int dwPrefMaxLen,   // DWORD
        IntByReference lpdwEntriesRead,   // DWORD* out
        IntByReference lpdwTotalEntries,   // DWORD* out
        IntByReference lpdwResumeHandle   // DWORD* optional, in/out
    );
}

@[Link("mprapi")]
lib LibMPRAPI
  fun MprConfigTransportEnum = MprConfigTransportEnum(
    hMprConfig : Void*,   # HANDLE
    dwLevel : UInt32,   # DWORD
    lplpBuffer : UInt8**,   # BYTE** out
    dwPrefMaxLen : UInt32,   # DWORD
    lpdwEntriesRead : UInt32*,   # DWORD* out
    lpdwTotalEntries : UInt32*,   # DWORD* out
    lpdwResumeHandle : UInt32*   # DWORD* optional, 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 MprConfigTransportEnumNative = Uint32 Function(Pointer<Void>, Uint32, Pointer<Uint8>, Uint32, Pointer<Uint32>, Pointer<Uint32>, Pointer<Uint32>);
typedef MprConfigTransportEnumDart = int Function(Pointer<Void>, int, Pointer<Uint8>, int, Pointer<Uint32>, Pointer<Uint32>, Pointer<Uint32>);
final MprConfigTransportEnum = DynamicLibrary.open('MPRAPI.dll')
    .lookupFunction<MprConfigTransportEnumNative, MprConfigTransportEnumDart>('MprConfigTransportEnum');
// hMprConfig : HANDLE -> Pointer<Void>
// dwLevel : DWORD -> Uint32
// lplpBuffer : BYTE** out -> Pointer<Uint8>
// dwPrefMaxLen : DWORD -> Uint32
// lpdwEntriesRead : DWORD* out -> Pointer<Uint32>
// lpdwTotalEntries : DWORD* out -> Pointer<Uint32>
// lpdwResumeHandle : DWORD* optional, in/out -> Pointer<Uint32>
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。

{$mode objfpc}{$H+}
function MprConfigTransportEnum(
  hMprConfig: THandle;   // HANDLE
  dwLevel: DWORD;   // DWORD
  lplpBuffer: Pointer;   // BYTE** out
  dwPrefMaxLen: DWORD;   // DWORD
  lpdwEntriesRead: Pointer;   // DWORD* out
  lpdwTotalEntries: Pointer;   // DWORD* out
  lpdwResumeHandle: Pointer   // DWORD* optional, in/out
): DWORD; stdcall;
  external 'MPRAPI.dll' name 'MprConfigTransportEnum';

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

foreign import stdcall safe "MprConfigTransportEnum"
  c_MprConfigTransportEnum :: Ptr () -> Word32 -> Ptr Word8 -> Word32 -> Ptr Word32 -> Ptr Word32 -> Ptr Word32 -> IO Word32
-- hMprConfig : HANDLE -> Ptr ()
-- dwLevel : DWORD -> Word32
-- lplpBuffer : BYTE** out -> Ptr Word8
-- dwPrefMaxLen : DWORD -> Word32
-- lpdwEntriesRead : DWORD* out -> Ptr Word32
-- lpdwTotalEntries : DWORD* out -> Ptr Word32
-- lpdwResumeHandle : DWORD* optional, 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 mprconfigtransportenum =
  foreign "MprConfigTransportEnum"
    ((ptr void) @-> uint32_t @-> (ptr uint8_t) @-> uint32_t @-> (ptr uint32_t) @-> (ptr uint32_t) @-> (ptr uint32_t) @-> returning uint32_t)
(* hMprConfig : HANDLE -> (ptr void) *)
(* dwLevel : DWORD -> uint32_t *)
(* lplpBuffer : BYTE** out -> (ptr uint8_t) *)
(* dwPrefMaxLen : DWORD -> uint32_t *)
(* lpdwEntriesRead : DWORD* out -> (ptr uint32_t) *)
(* lpdwTotalEntries : DWORD* out -> (ptr uint32_t) *)
(* lpdwResumeHandle : DWORD* optional, 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 mprapi (t "MPRAPI.dll"))
(cffi:use-foreign-library mprapi)

(cffi:defcfun ("MprConfigTransportEnum" mpr-config-transport-enum :convention :stdcall) :uint32
  (h-mpr-config :pointer)   ; HANDLE
  (dw-level :uint32)   ; DWORD
  (lplp-buffer :pointer)   ; BYTE** out
  (dw-pref-max-len :uint32)   ; DWORD
  (lpdw-entries-read :pointer)   ; DWORD* out
  (lpdw-total-entries :pointer)   ; DWORD* out
  (lpdw-resume-handle :pointer))   ; DWORD* optional, in/out
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。

use Win32::API;
my $MprConfigTransportEnum = Win32::API::More->new('MPRAPI',
    'DWORD MprConfigTransportEnum(HANDLE hMprConfig, DWORD dwLevel, LPVOID lplpBuffer, DWORD dwPrefMaxLen, LPVOID lpdwEntriesRead, LPVOID lpdwTotalEntries, LPVOID lpdwResumeHandle)');
# my $ret = $MprConfigTransportEnum->Call($hMprConfig, $dwLevel, $lplpBuffer, $dwPrefMaxLen, $lpdwEntriesRead, $lpdwTotalEntries, $lpdwResumeHandle);
# hMprConfig : HANDLE -> HANDLE
# dwLevel : DWORD -> DWORD
# lplpBuffer : BYTE** out -> LPVOID
# dwPrefMaxLen : DWORD -> DWORD
# lpdwEntriesRead : DWORD* out -> LPVOID
# lpdwTotalEntries : DWORD* out -> LPVOID
# lpdwResumeHandle : DWORD* optional, 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。