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。

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