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。

#uselib "RASAPI32.dll"
#cfunc global RasGetConnectionStatistics "RasGetConnectionStatistics" sptr, var
; res = RasGetConnectionStatistics(hRasConn, lpStatistics)
; hRasConn : HRASCONN -> "sptr"
; lpStatistics : RAS_STATS* 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 RasGetConnectionStatistics(HRASCONN hRasConn, RAS_STATS* lpStatistics)
#uselib "RASAPI32.dll"
#cfunc global RasGetConnectionStatistics "RasGetConnectionStatistics" intptr, var
; res = RasGetConnectionStatistics(hRasConn, lpStatistics)
; hRasConn : HRASCONN -> "intptr"
; lpStatistics : RAS_STATS* 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。

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)。