FwpmNetEventSubscribe4

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

DWORD FwpmNetEventSubscribe4(
    FWPM_ENGINE_HANDLE engineHandle,
    const FWPM_NET_EVENT_SUBSCRIPTION0* subscription,
    FWPM_NET_EVENT_CALLBACK4 callback,
    void* context,   // optional
    HANDLE* eventsHandle
);

<DllImport("fwpuclnt.dll", ExactSpelling:=True)>
Public Shared Function FwpmNetEventSubscribe4(
    engineHandle As FWPM_ENGINE_HANDLE,   ' FWPM_ENGINE_HANDLE
    subscription As IntPtr,   ' FWPM_NET_EVENT_SUBSCRIPTION0*
    callback As IntPtr,   ' FWPM_NET_EVENT_CALLBACK4
    context As IntPtr,   ' void* optional
    eventsHandle As IntPtr   ' HANDLE* out
) As UInteger
End Function

' engineHandle : FWPM_ENGINE_HANDLE
' subscription : FWPM_NET_EVENT_SUBSCRIPTION0*
' callback : FWPM_NET_EVENT_CALLBACK4
' context : void* optional
' eventsHandle : HANDLE* out
Declare PtrSafe Function FwpmNetEventSubscribe4 Lib "fwpuclnt" ( _
    ByVal engineHandle As LongPtr, _
    ByVal subscription As LongPtr, _
    ByVal callback As LongPtr, _
    ByVal context As LongPtr, _
    ByVal eventsHandle 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

FwpmNetEventSubscribe4 = ctypes.windll.fwpuclnt.FwpmNetEventSubscribe4
FwpmNetEventSubscribe4.restype = wintypes.DWORD
FwpmNetEventSubscribe4.argtypes = [
    FWPM_ENGINE_HANDLE,  # engineHandle : FWPM_ENGINE_HANDLE
    ctypes.c_void_p,  # subscription : FWPM_NET_EVENT_SUBSCRIPTION0*
    ctypes.c_void_p,  # callback : FWPM_NET_EVENT_CALLBACK4
    ctypes.POINTER(None),  # context : void* optional
    ctypes.c_void_p,  # eventsHandle : HANDLE* out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('fwpuclnt.dll')
FwpmNetEventSubscribe4 = Fiddle::Function.new(
  lib['FwpmNetEventSubscribe4'],
  [
    Fiddle::TYPE_VOIDP,  # engineHandle : FWPM_ENGINE_HANDLE
    Fiddle::TYPE_VOIDP,  # subscription : FWPM_NET_EVENT_SUBSCRIPTION0*
    Fiddle::TYPE_VOIDP,  # callback : FWPM_NET_EVENT_CALLBACK4
    Fiddle::TYPE_VOIDP,  # context : void* optional
    Fiddle::TYPE_VOIDP,  # eventsHandle : HANDLE* out
  ],
  -Fiddle::TYPE_INT)

#[link(name = "fwpuclnt")]
extern "system" {
    fn FwpmNetEventSubscribe4(
        engineHandle: FWPM_ENGINE_HANDLE,  // FWPM_ENGINE_HANDLE
        subscription: *const FWPM_NET_EVENT_SUBSCRIPTION0,  // FWPM_NET_EVENT_SUBSCRIPTION0*
        callback: *const core::ffi::c_void,  // FWPM_NET_EVENT_CALLBACK4
        context: *mut (),  // void* optional
        eventsHandle: *mut *mut core::ffi::c_void  // HANDLE* out
    ) -> u32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("fwpuclnt.dll")]
public static extern uint FwpmNetEventSubscribe4(FWPM_ENGINE_HANDLE engineHandle, IntPtr subscription, IntPtr callback, IntPtr context, IntPtr eventsHandle);
"@
$api = Add-Type -MemberDefinition $sig -Name 'fwpuclnt_FwpmNetEventSubscribe4' -Namespace Win32 -PassThru
# $api::FwpmNetEventSubscribe4(engineHandle, subscription, callback, context, eventsHandle)

#uselib "fwpuclnt.dll"
#func global FwpmNetEventSubscribe4 "FwpmNetEventSubscribe4" sptr, sptr, sptr, sptr, sptr
; FwpmNetEventSubscribe4 engineHandle, varptr(subscription), callback, context, eventsHandle   ; 戻り値は stat
; engineHandle : FWPM_ENGINE_HANDLE -> "sptr"
; subscription : FWPM_NET_EVENT_SUBSCRIPTION0* -> "sptr"
; callback : FWPM_NET_EVENT_CALLBACK4 -> "sptr"
; context : void* optional -> "sptr"
; eventsHandle : HANDLE* 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 FwpmNetEventSubscribe4 "FwpmNetEventSubscribe4" int, var, sptr, sptr, sptr
; res = FwpmNetEventSubscribe4(engineHandle, subscription, callback, context, eventsHandle)
; engineHandle : FWPM_ENGINE_HANDLE -> "int"
; subscription : FWPM_NET_EVENT_SUBSCRIPTION0* -> "var"
; callback : FWPM_NET_EVENT_CALLBACK4 -> "sptr"
; context : void* optional -> "sptr"
; eventsHandle : HANDLE* 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。
; ※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 FwpmNetEventSubscribe4(FWPM_ENGINE_HANDLE engineHandle, FWPM_NET_EVENT_SUBSCRIPTION0* subscription, FWPM_NET_EVENT_CALLBACK4 callback, void* context, HANDLE* eventsHandle)
#uselib "fwpuclnt.dll"
#cfunc global FwpmNetEventSubscribe4 "FwpmNetEventSubscribe4" int, var, intptr, intptr, intptr
; res = FwpmNetEventSubscribe4(engineHandle, subscription, callback, context, eventsHandle)
; engineHandle : FWPM_ENGINE_HANDLE -> "int"
; subscription : FWPM_NET_EVENT_SUBSCRIPTION0* -> "var"
; callback : FWPM_NET_EVENT_CALLBACK4 -> "intptr"
; context : void* optional -> "intptr"
; eventsHandle : HANDLE* out -> "intptr"
; ※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")
	procFwpmNetEventSubscribe4 = fwpuclnt.NewProc("FwpmNetEventSubscribe4")
)

// engineHandle (FWPM_ENGINE_HANDLE), subscription (FWPM_NET_EVENT_SUBSCRIPTION0*), callback (FWPM_NET_EVENT_CALLBACK4), context (void* optional), eventsHandle (HANDLE* out)
r1, _, err := procFwpmNetEventSubscribe4.Call(
	uintptr(engineHandle),
	uintptr(subscription),
	uintptr(callback),
	uintptr(context),
	uintptr(eventsHandle),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // DWORD

function FwpmNetEventSubscribe4(
  engineHandle: FWPM_ENGINE_HANDLE;   // FWPM_ENGINE_HANDLE
  subscription: Pointer;   // FWPM_NET_EVENT_SUBSCRIPTION0*
  callback: Pointer;   // FWPM_NET_EVENT_CALLBACK4
  context: Pointer;   // void* optional
  eventsHandle: Pointer   // HANDLE* out
): DWORD; stdcall;
  external 'fwpuclnt.dll' name 'FwpmNetEventSubscribe4';

result := DllCall("fwpuclnt\FwpmNetEventSubscribe4"
    , "Ptr", engineHandle   ; FWPM_ENGINE_HANDLE
    , "Ptr", subscription   ; FWPM_NET_EVENT_SUBSCRIPTION0*
    , "Ptr", callback   ; FWPM_NET_EVENT_CALLBACK4
    , "Ptr", context   ; void* optional
    , "Ptr", eventsHandle   ; HANDLE* out
    , "UInt")   ; return: DWORD

●FwpmNetEventSubscribe4(engineHandle, subscription, callback, context, eventsHandle) = DLL("fwpuclnt.dll", "dword FwpmNetEventSubscribe4(void*, void*, void*, void*, void*)")
# 呼び出し: FwpmNetEventSubscribe4(engineHandle, subscription, callback, context, eventsHandle)
# engineHandle : FWPM_ENGINE_HANDLE -> "void*"
# subscription : FWPM_NET_EVENT_SUBSCRIPTION0* -> "void*"
# callback : FWPM_NET_EVENT_CALLBACK4 -> "void*"
# context : void* optional -> "void*"
# eventsHandle : HANDLE* 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)。