RasGetLinkStatistics

// RASAPI32.dll
#include <windows.h>

DWORD RasGetLinkStatistics(
    HRASCONN hRasConn,
    DWORD dwSubEntry,
    RAS_STATS* lpStatistics
);

<DllImport("RASAPI32.dll", ExactSpelling:=True)>
Public Shared Function RasGetLinkStatistics(
    hRasConn As IntPtr,   ' HRASCONN
    dwSubEntry As UInteger,   ' DWORD
    lpStatistics As IntPtr   ' RAS_STATS* in/out
) As UInteger
End Function

' hRasConn : HRASCONN
' dwSubEntry : DWORD
' lpStatistics : RAS_STATS* in/out
Declare PtrSafe Function RasGetLinkStatistics Lib "rasapi32" ( _
    ByVal hRasConn As LongPtr, _
    ByVal dwSubEntry As Long, _
    ByVal lpStatistics 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

RasGetLinkStatistics = ctypes.windll.rasapi32.RasGetLinkStatistics
RasGetLinkStatistics.restype = wintypes.DWORD
RasGetLinkStatistics.argtypes = [
    wintypes.HANDLE,  # hRasConn : HRASCONN
    wintypes.DWORD,  # dwSubEntry : DWORD
    ctypes.c_void_p,  # lpStatistics : RAS_STATS* in/out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('RASAPI32.dll')
RasGetLinkStatistics = Fiddle::Function.new(
  lib['RasGetLinkStatistics'],
  [
    Fiddle::TYPE_VOIDP,  # hRasConn : HRASCONN
    -Fiddle::TYPE_INT,  # dwSubEntry : DWORD
    Fiddle::TYPE_VOIDP,  # lpStatistics : RAS_STATS* in/out
  ],
  -Fiddle::TYPE_INT)

#[link(name = "rasapi32")]
extern "system" {
    fn RasGetLinkStatistics(
        hRasConn: *mut core::ffi::c_void,  // HRASCONN
        dwSubEntry: u32,  // DWORD
        lpStatistics: *mut RAS_STATS  // RAS_STATS* in/out
    ) -> u32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("RASAPI32.dll")]
public static extern uint RasGetLinkStatistics(IntPtr hRasConn, uint dwSubEntry, IntPtr lpStatistics);
"@
$api = Add-Type -MemberDefinition $sig -Name 'RASAPI32_RasGetLinkStatistics' -Namespace Win32 -PassThru
# $api::RasGetLinkStatistics(hRasConn, dwSubEntry, lpStatistics)

#uselib "RASAPI32.dll"
#func global RasGetLinkStatistics "RasGetLinkStatistics" sptr, sptr, sptr
; RasGetLinkStatistics hRasConn, dwSubEntry, varptr(lpStatistics)   ; 戻り値は stat
; hRasConn : HRASCONN -> "sptr"
; dwSubEntry : DWORD -> "sptr"
; lpStatistics : RAS_STATS* 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 (
	rasapi32 = windows.NewLazySystemDLL("RASAPI32.dll")
	procRasGetLinkStatistics = rasapi32.NewProc("RasGetLinkStatistics")
)

// hRasConn (HRASCONN), dwSubEntry (DWORD), lpStatistics (RAS_STATS* in/out)
r1, _, err := procRasGetLinkStatistics.Call(
	uintptr(hRasConn),
	uintptr(dwSubEntry),
	uintptr(lpStatistics),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // DWORD

function RasGetLinkStatistics(
  hRasConn: THandle;   // HRASCONN
  dwSubEntry: DWORD;   // DWORD
  lpStatistics: Pointer   // RAS_STATS* in/out
): DWORD; stdcall;
  external 'RASAPI32.dll' name 'RasGetLinkStatistics';

result := DllCall("RASAPI32\RasGetLinkStatistics"
    , "Ptr", hRasConn   ; HRASCONN
    , "UInt", dwSubEntry   ; DWORD
    , "Ptr", lpStatistics   ; RAS_STATS* in/out
    , "UInt")   ; return: DWORD

●RasGetLinkStatistics(hRasConn, dwSubEntry, lpStatistics) = DLL("RASAPI32.dll", "dword RasGetLinkStatistics(void*, dword, void*)")
# 呼び出し: RasGetLinkStatistics(hRasConn, dwSubEntry, lpStatistics)
# hRasConn : HRASCONN -> "void*"
# dwSubEntry : DWORD -> "dword"
# lpStatistics : RAS_STATS* 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 "rasapi32" fn RasGetLinkStatistics(
    hRasConn: ?*anyopaque, // HRASCONN
    dwSubEntry: u32, // DWORD
    lpStatistics: [*c]RAS_STATS // RAS_STATS* in/out
) callconv(std.os.windows.WINAPI) u32;

proc RasGetLinkStatistics(
    hRasConn: pointer,  # HRASCONN
    dwSubEntry: uint32,  # DWORD
    lpStatistics: ptr RAS_STATS  # RAS_STATS* in/out
): uint32 {.importc: "RasGetLinkStatistics", stdcall, dynlib: "RASAPI32.dll".}

pragma(lib, "rasapi32");
extern(Windows)
uint RasGetLinkStatistics(
    void* hRasConn,   // HRASCONN
    uint dwSubEntry,   // DWORD
    RAS_STATS* lpStatistics   // RAS_STATS* in/out
);

ccall((:RasGetLinkStatistics, "RASAPI32.dll"), stdcall, UInt32,
      (Ptr{Cvoid}, UInt32, Ptr{RAS_STATS}),
      hRasConn, dwSubEntry, lpStatistics)
# hRasConn : HRASCONN -> Ptr{Cvoid}
# dwSubEntry : DWORD -> UInt32
# lpStatistics : RAS_STATS* in/out -> Ptr{RAS_STATS}
# stdcall は 32bit のみ意味を持つ(x64 では無視)。

local ffi = require("ffi")
ffi.cdef[[
uint32_t RasGetLinkStatistics(
    void* hRasConn,
    uint32_t dwSubEntry,
    void* lpStatistics);
]]
local rasapi32 = ffi.load("rasapi32")
-- rasapi32.RasGetLinkStatistics(hRasConn, dwSubEntry, lpStatistics)
-- hRasConn : HRASCONN
-- dwSubEntry : DWORD
-- lpStatistics : RAS_STATS* 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('RASAPI32.dll');
const RasGetLinkStatistics = lib.func('__stdcall', 'RasGetLinkStatistics', 'uint32_t', ['void *', 'uint32_t', 'void *']);
// RasGetLinkStatistics(hRasConn, dwSubEntry, lpStatistics)
// hRasConn : HRASCONN -> 'void *'
// dwSubEntry : DWORD -> 'uint32_t'
// lpStatistics : RAS_STATS* 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("RASAPI32.dll", {
  RasGetLinkStatistics: { parameters: ["pointer", "u32", "pointer"], result: "u32" },
});
// lib.symbols.RasGetLinkStatistics(hRasConn, dwSubEntry, lpStatistics)
// hRasConn : HRASCONN -> "pointer"
// dwSubEntry : DWORD -> "u32"
// lpStatistics : RAS_STATS* 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 RasGetLinkStatistics(
    void* hRasConn,
    uint32_t dwSubEntry,
    void* lpStatistics);
C, "RASAPI32.dll");
// $ffi->RasGetLinkStatistics(hRasConn, dwSubEntry, lpStatistics);
// hRasConn : HRASCONN
// dwSubEntry : DWORD
// lpStatistics : RAS_STATS* 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 Rasapi32 extends StdCallLibrary {
    Rasapi32 INSTANCE = Native.load("rasapi32", Rasapi32.class);
    int RasGetLinkStatistics(
        Pointer hRasConn,   // HRASCONN
        int dwSubEntry,   // DWORD
        Pointer lpStatistics   // RAS_STATS* in/out
    );
}

@[Link("rasapi32")]
lib LibRASAPI32
  fun RasGetLinkStatistics = RasGetLinkStatistics(
    hRasConn : Void*,   # HRASCONN
    dwSubEntry : UInt32,   # DWORD
    lpStatistics : RAS_STATS*   # RAS_STATS* 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 RasGetLinkStatisticsNative = Uint32 Function(Pointer<Void>, Uint32, Pointer<Void>);
typedef RasGetLinkStatisticsDart = int Function(Pointer<Void>, int, Pointer<Void>);
final RasGetLinkStatistics = DynamicLibrary.open('RASAPI32.dll')
    .lookupFunction<RasGetLinkStatisticsNative, RasGetLinkStatisticsDart>('RasGetLinkStatistics');
// hRasConn : HRASCONN -> Pointer<Void>
// dwSubEntry : DWORD -> Uint32
// lpStatistics : RAS_STATS* in/out -> Pointer<Void>
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。

{$mode objfpc}{$H+}
function RasGetLinkStatistics(
  hRasConn: THandle;   // HRASCONN
  dwSubEntry: DWORD;   // DWORD
  lpStatistics: Pointer   // RAS_STATS* in/out
): DWORD; stdcall;
  external 'RASAPI32.dll' name 'RasGetLinkStatistics';

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

foreign import stdcall safe "RasGetLinkStatistics"
  c_RasGetLinkStatistics :: Ptr () -> Word32 -> Ptr () -> IO Word32
-- hRasConn : HRASCONN -> Ptr ()
-- dwSubEntry : DWORD -> Word32
-- lpStatistics : RAS_STATS* 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 rasgetlinkstatistics =
  foreign "RasGetLinkStatistics"
    ((ptr void) @-> uint32_t @-> (ptr void) @-> returning uint32_t)
(* hRasConn : HRASCONN -> (ptr void) *)
(* dwSubEntry : DWORD -> uint32_t *)
(* lpStatistics : RAS_STATS* 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 rasapi32 (t "RASAPI32.dll"))
(cffi:use-foreign-library rasapi32)

(cffi:defcfun ("RasGetLinkStatistics" ras-get-link-statistics :convention :stdcall) :uint32
  (h-ras-conn :pointer)   ; HRASCONN
  (dw-sub-entry :uint32)   ; DWORD
  (lp-statistics :pointer))   ; RAS_STATS* in/out
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。

use Win32::API;
my $RasGetLinkStatistics = Win32::API::More->new('RASAPI32',
    'DWORD RasGetLinkStatistics(HANDLE hRasConn, DWORD dwSubEntry, LPVOID lpStatistics)');
# my $ret = $RasGetLinkStatistics->Call($hRasConn, $dwSubEntry, $lpStatistics);
# hRasConn : HRASCONN -> HANDLE
# dwSubEntry : DWORD -> DWORD
# lpStatistics : RAS_STATS* 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。