IPsecGetStatistics0

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

DWORD IPsecGetStatistics0(
    FWPM_ENGINE_HANDLE engineHandle,
    IPSEC_STATISTICS0* ipsecStatistics
);

<DllImport("fwpuclnt.dll", ExactSpelling:=True)>
Public Shared Function IPsecGetStatistics0(
    engineHandle As FWPM_ENGINE_HANDLE,   ' FWPM_ENGINE_HANDLE
    ipsecStatistics As IntPtr   ' IPSEC_STATISTICS0* out
) As UInteger
End Function

' engineHandle : FWPM_ENGINE_HANDLE
' ipsecStatistics : IPSEC_STATISTICS0* out
Declare PtrSafe Function IPsecGetStatistics0 Lib "fwpuclnt" ( _
    ByVal engineHandle As LongPtr, _
    ByVal ipsecStatistics 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

IPsecGetStatistics0 = ctypes.windll.fwpuclnt.IPsecGetStatistics0
IPsecGetStatistics0.restype = wintypes.DWORD
IPsecGetStatistics0.argtypes = [
    FWPM_ENGINE_HANDLE,  # engineHandle : FWPM_ENGINE_HANDLE
    ctypes.c_void_p,  # ipsecStatistics : IPSEC_STATISTICS0* out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('fwpuclnt.dll')
IPsecGetStatistics0 = Fiddle::Function.new(
  lib['IPsecGetStatistics0'],
  [
    Fiddle::TYPE_VOIDP,  # engineHandle : FWPM_ENGINE_HANDLE
    Fiddle::TYPE_VOIDP,  # ipsecStatistics : IPSEC_STATISTICS0* out
  ],
  -Fiddle::TYPE_INT)

#[link(name = "fwpuclnt")]
extern "system" {
    fn IPsecGetStatistics0(
        engineHandle: FWPM_ENGINE_HANDLE,  // FWPM_ENGINE_HANDLE
        ipsecStatistics: *mut IPSEC_STATISTICS0  // IPSEC_STATISTICS0* out
    ) -> u32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("fwpuclnt.dll")]
public static extern uint IPsecGetStatistics0(FWPM_ENGINE_HANDLE engineHandle, IntPtr ipsecStatistics);
"@
$api = Add-Type -MemberDefinition $sig -Name 'fwpuclnt_IPsecGetStatistics0' -Namespace Win32 -PassThru
# $api::IPsecGetStatistics0(engineHandle, ipsecStatistics)

#uselib "fwpuclnt.dll"
#func global IPsecGetStatistics0 "IPsecGetStatistics0" sptr, sptr
; IPsecGetStatistics0 engineHandle, varptr(ipsecStatistics)   ; 戻り値は stat
; engineHandle : FWPM_ENGINE_HANDLE -> "sptr"
; ipsecStatistics : IPSEC_STATISTICS0* out -> "sptr"
; ※値渡し構造体は直接渡せません。intにパック、または var で構造体変数を渡してください。
; ※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 "fwpuclnt.dll"
#cfunc global IPsecGetStatistics0 "IPsecGetStatistics0" int, var
; res = IPsecGetStatistics0(engineHandle, ipsecStatistics)
; engineHandle : FWPM_ENGINE_HANDLE -> "int"
; ipsecStatistics : IPSEC_STATISTICS0* out -> "var"
; ※値渡し構造体は直接渡せません。intにパック、または var で構造体変数を渡してください。
; ※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 IPsecGetStatistics0(FWPM_ENGINE_HANDLE engineHandle, IPSEC_STATISTICS0* ipsecStatistics)
#uselib "fwpuclnt.dll"
#cfunc global IPsecGetStatistics0 "IPsecGetStatistics0" int, var
; res = IPsecGetStatistics0(engineHandle, ipsecStatistics)
; engineHandle : FWPM_ENGINE_HANDLE -> "int"
; ipsecStatistics : IPSEC_STATISTICS0* out -> "var"
; ※値渡し構造体は直接渡せません。intにパック、または var で構造体変数を渡してください。
; ※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 (
	fwpuclnt = windows.NewLazySystemDLL("fwpuclnt.dll")
	procIPsecGetStatistics0 = fwpuclnt.NewProc("IPsecGetStatistics0")
)

// engineHandle (FWPM_ENGINE_HANDLE), ipsecStatistics (IPSEC_STATISTICS0* out)
r1, _, err := procIPsecGetStatistics0.Call(
	uintptr(engineHandle),
	uintptr(ipsecStatistics),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // DWORD

function IPsecGetStatistics0(
  engineHandle: FWPM_ENGINE_HANDLE;   // FWPM_ENGINE_HANDLE
  ipsecStatistics: Pointer   // IPSEC_STATISTICS0* out
): DWORD; stdcall;
  external 'fwpuclnt.dll' name 'IPsecGetStatistics0';

result := DllCall("fwpuclnt\IPsecGetStatistics0"
    , "Ptr", engineHandle   ; FWPM_ENGINE_HANDLE
    , "Ptr", ipsecStatistics   ; IPSEC_STATISTICS0* out
    , "UInt")   ; return: DWORD

●IPsecGetStatistics0(engineHandle, ipsecStatistics) = DLL("fwpuclnt.dll", "dword IPsecGetStatistics0(void*, void*)")
# 呼び出し: IPsecGetStatistics0(engineHandle, ipsecStatistics)
# engineHandle : FWPM_ENGINE_HANDLE -> "void*"
# ipsecStatistics : IPSEC_STATISTICS0* 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)。