RasClearConnectionStatistics

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

DWORD RasClearConnectionStatistics(
    HRASCONN hRasConn
);

<DllImport("RASAPI32.dll", ExactSpelling:=True)>
Public Shared Function RasClearConnectionStatistics(
    hRasConn As IntPtr   ' HRASCONN
) As UInteger
End Function

' hRasConn : HRASCONN
Declare PtrSafe Function RasClearConnectionStatistics Lib "rasapi32" ( _
    ByVal hRasConn 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

RasClearConnectionStatistics = ctypes.windll.rasapi32.RasClearConnectionStatistics
RasClearConnectionStatistics.restype = wintypes.DWORD
RasClearConnectionStatistics.argtypes = [
    wintypes.HANDLE,  # hRasConn : HRASCONN
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('RASAPI32.dll')
RasClearConnectionStatistics = Fiddle::Function.new(
  lib['RasClearConnectionStatistics'],
  [
    Fiddle::TYPE_VOIDP,  # hRasConn : HRASCONN
  ],
  -Fiddle::TYPE_INT)

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

$sig = @"
[DllImport("RASAPI32.dll")]
public static extern uint RasClearConnectionStatistics(IntPtr hRasConn);
"@
$api = Add-Type -MemberDefinition $sig -Name 'RASAPI32_RasClearConnectionStatistics' -Namespace Win32 -PassThru
# $api::RasClearConnectionStatistics(hRasConn)

#uselib "RASAPI32.dll"
#func global RasClearConnectionStatistics "RasClearConnectionStatistics" sptr
; RasClearConnectionStatistics hRasConn   ; 戻り値は stat
; hRasConn : HRASCONN -> "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。

#uselib "RASAPI32.dll"
#cfunc global RasClearConnectionStatistics "RasClearConnectionStatistics" sptr
; res = RasClearConnectionStatistics(hRasConn)
; hRasConn : HRASCONN -> "sptr"

; DWORD RasClearConnectionStatistics(HRASCONN hRasConn)
#uselib "RASAPI32.dll"
#cfunc global RasClearConnectionStatistics "RasClearConnectionStatistics" intptr
; res = RasClearConnectionStatistics(hRasConn)
; hRasConn : HRASCONN -> "intptr"

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

var (
	rasapi32 = windows.NewLazySystemDLL("RASAPI32.dll")
	procRasClearConnectionStatistics = rasapi32.NewProc("RasClearConnectionStatistics")
)

// hRasConn (HRASCONN)
r1, _, err := procRasClearConnectionStatistics.Call(
	uintptr(hRasConn),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // DWORD

function RasClearConnectionStatistics(
  hRasConn: THandle   // HRASCONN
): DWORD; stdcall;
  external 'RASAPI32.dll' name 'RasClearConnectionStatistics';

result := DllCall("RASAPI32\RasClearConnectionStatistics"
    , "Ptr", hRasConn   ; HRASCONN
    , "UInt")   ; return: DWORD

●RasClearConnectionStatistics(hRasConn) = DLL("RASAPI32.dll", "dword RasClearConnectionStatistics(void*)")
# 呼び出し: RasClearConnectionStatistics(hRasConn)
# hRasConn : HRASCONN -> "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 RasClearConnectionStatistics(
    hRasConn: ?*anyopaque // HRASCONN
) callconv(std.os.windows.WINAPI) u32;

proc RasClearConnectionStatistics(
    hRasConn: pointer  # HRASCONN
): uint32 {.importc: "RasClearConnectionStatistics", stdcall, dynlib: "RASAPI32.dll".}

pragma(lib, "rasapi32");
extern(Windows)
uint RasClearConnectionStatistics(
    void* hRasConn   // HRASCONN
);

ccall((:RasClearConnectionStatistics, "RASAPI32.dll"), stdcall, UInt32,
      (Ptr{Cvoid},),
      hRasConn)
# hRasConn : HRASCONN -> Ptr{Cvoid}
# stdcall は 32bit のみ意味を持つ(x64 では無視)。

local ffi = require("ffi")
ffi.cdef[[
uint32_t RasClearConnectionStatistics(
    void* hRasConn);
]]
local rasapi32 = ffi.load("rasapi32")
-- rasapi32.RasClearConnectionStatistics(hRasConn)
-- hRasConn : HRASCONN
-- 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 RasClearConnectionStatistics = lib.func('__stdcall', 'RasClearConnectionStatistics', 'uint32_t', ['void *']);
// RasClearConnectionStatistics(hRasConn)
// hRasConn : HRASCONN -> '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", {
  RasClearConnectionStatistics: { parameters: ["pointer"], result: "u32" },
});
// lib.symbols.RasClearConnectionStatistics(hRasConn)
// hRasConn : HRASCONN -> "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 RasClearConnectionStatistics(
    void* hRasConn);
C, "RASAPI32.dll");
// $ffi->RasClearConnectionStatistics(hRasConn);
// hRasConn : HRASCONN
// 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 RasClearConnectionStatistics(
        Pointer hRasConn   // HRASCONN
    );
}

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

{$mode objfpc}{$H+}
function RasClearConnectionStatistics(
  hRasConn: THandle   // HRASCONN
): DWORD; stdcall;
  external 'RASAPI32.dll' name 'RasClearConnectionStatistics';

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

foreign import stdcall safe "RasClearConnectionStatistics"
  c_RasClearConnectionStatistics :: Ptr () -> IO Word32
-- hRasConn : HRASCONN -> 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 rasclearconnectionstatistics =
  foreign "RasClearConnectionStatistics"
    ((ptr void) @-> returning uint32_t)
(* hRasConn : HRASCONN -> (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 ("RasClearConnectionStatistics" ras-clear-connection-statistics :convention :stdcall) :uint32
  (h-ras-conn :pointer))   ; HRASCONN
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。

use Win32::API;
my $RasClearConnectionStatistics = Win32::API::More->new('RASAPI32',
    'DWORD RasClearConnectionStatistics(HANDLE hRasConn)');
# my $ret = $RasClearConnectionStatistics->Call($hRasConn);
# hRasConn : HRASCONN -> HANDLE
# 値渡し構造体は pack() した文字列、または Win32::API::Struct を使用。