RasGetConnectionStatistics

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

DWORD RasGetConnectionStatistics(
    HRASCONN hRasConn,
    RAS_STATS* lpStatistics
);

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

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

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

require 'fiddle'
require 'fiddle/import'

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

#[link(name = "rasapi32")]
extern "system" {
    fn RasGetConnectionStatistics(
        hRasConn: *mut core::ffi::c_void,  // HRASCONN
        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 RasGetConnectionStatistics(IntPtr hRasConn, IntPtr lpStatistics);
"@
$api = Add-Type -MemberDefinition $sig -Name 'RASAPI32_RasGetConnectionStatistics' -Namespace Win32 -PassThru
# $api::RasGetConnectionStatistics(hRasConn, lpStatistics)

#uselib "RASAPI32.dll"
#func global RasGetConnectionStatistics "RasGetConnectionStatistics" sptr, sptr
; RasGetConnectionStatistics hRasConn, varptr(lpStatistics)   ; 戻り値は stat
; hRasConn : HRASCONN -> "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")
	procRasGetConnectionStatistics = rasapi32.NewProc("RasGetConnectionStatistics")
)

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

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

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

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

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

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

ccall((:RasGetConnectionStatistics, "RASAPI32.dll"), stdcall, UInt32,
      (Ptr{Cvoid}, Ptr{RAS_STATS}),
      hRasConn, lpStatistics)
# hRasConn : HRASCONN -> Ptr{Cvoid}
# 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 RasGetConnectionStatistics(
    void* hRasConn,
    void* lpStatistics);
]]
local rasapi32 = ffi.load("rasapi32")
-- rasapi32.RasGetConnectionStatistics(hRasConn, lpStatistics)
-- hRasConn : HRASCONN
-- 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 RasGetConnectionStatistics = lib.func('__stdcall', 'RasGetConnectionStatistics', 'uint32_t', ['void *', 'void *']);
// RasGetConnectionStatistics(hRasConn, lpStatistics)
// hRasConn : HRASCONN -> 'void *'
// 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", {
  RasGetConnectionStatistics: { parameters: ["pointer", "pointer"], result: "u32" },
});
// lib.symbols.RasGetConnectionStatistics(hRasConn, lpStatistics)
// hRasConn : HRASCONN -> "pointer"
// 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 RasGetConnectionStatistics(
    void* hRasConn,
    void* lpStatistics);
C, "RASAPI32.dll");
// $ffi->RasGetConnectionStatistics(hRasConn, lpStatistics);
// hRasConn : HRASCONN
// 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 RasGetConnectionStatistics(
        Pointer hRasConn,   // HRASCONN
        Pointer lpStatistics   // RAS_STATS* in/out
    );
}

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

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

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

foreign import stdcall safe "RasGetConnectionStatistics"
  c_RasGetConnectionStatistics :: Ptr () -> Ptr () -> IO Word32
-- hRasConn : HRASCONN -> Ptr ()
-- 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 rasgetconnectionstatistics =
  foreign "RasGetConnectionStatistics"
    ((ptr void) @-> (ptr void) @-> returning uint32_t)
(* hRasConn : HRASCONN -> (ptr void) *)
(* 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 ("RasGetConnectionStatistics" ras-get-connection-statistics :convention :stdcall) :uint32
  (h-ras-conn :pointer)   ; HRASCONN
  (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 $RasGetConnectionStatistics = Win32::API::More->new('RASAPI32',
    'DWORD RasGetConnectionStatistics(HANDLE hRasConn, LPVOID lpStatistics)');
# my $ret = $RasGetConnectionStatistics->Call($hRasConn, $lpStatistics);
# hRasConn : HRASCONN -> HANDLE
# 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。