NotifyNetworkConnectivityHintChange

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

WIN32_ERROR NotifyNetworkConnectivityHintChange(
    PNETWORK_CONNECTIVITY_HINT_CHANGE_CALLBACK Callback,
    void* CallerContext,   // optional
    BOOLEAN InitialNotification,
    HANDLE* NotificationHandle
);

<DllImport("IPHLPAPI.dll", ExactSpelling:=True)>
Public Shared Function NotifyNetworkConnectivityHintChange(
    Callback As IntPtr,   ' PNETWORK_CONNECTIVITY_HINT_CHANGE_CALLBACK
    CallerContext As IntPtr,   ' void* optional
    <MarshalAs(UnmanagedType.U1)> InitialNotification As Boolean,   ' BOOLEAN
    NotificationHandle As IntPtr   ' HANDLE* out
) As UInteger
End Function

' Callback : PNETWORK_CONNECTIVITY_HINT_CHANGE_CALLBACK
' CallerContext : void* optional
' InitialNotification : BOOLEAN
' NotificationHandle : HANDLE* out
Declare PtrSafe Function NotifyNetworkConnectivityHintChange Lib "iphlpapi" ( _
    ByVal Callback As LongPtr, _
    ByVal CallerContext As LongPtr, _
    ByVal InitialNotification As Byte, _
    ByVal NotificationHandle 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

NotifyNetworkConnectivityHintChange = ctypes.windll.iphlpapi.NotifyNetworkConnectivityHintChange
NotifyNetworkConnectivityHintChange.restype = wintypes.DWORD
NotifyNetworkConnectivityHintChange.argtypes = [
    ctypes.c_void_p,  # Callback : PNETWORK_CONNECTIVITY_HINT_CHANGE_CALLBACK
    ctypes.POINTER(None),  # CallerContext : void* optional
    wintypes.BOOLEAN,  # InitialNotification : BOOLEAN
    ctypes.c_void_p,  # NotificationHandle : HANDLE* out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('IPHLPAPI.dll')
NotifyNetworkConnectivityHintChange = Fiddle::Function.new(
  lib['NotifyNetworkConnectivityHintChange'],
  [
    Fiddle::TYPE_VOIDP,  # Callback : PNETWORK_CONNECTIVITY_HINT_CHANGE_CALLBACK
    Fiddle::TYPE_VOIDP,  # CallerContext : void* optional
    Fiddle::TYPE_CHAR,  # InitialNotification : BOOLEAN
    Fiddle::TYPE_VOIDP,  # NotificationHandle : HANDLE* out
  ],
  -Fiddle::TYPE_INT)

#[link(name = "iphlpapi")]
extern "system" {
    fn NotifyNetworkConnectivityHintChange(
        Callback: *const core::ffi::c_void,  // PNETWORK_CONNECTIVITY_HINT_CHANGE_CALLBACK
        CallerContext: *mut (),  // void* optional
        InitialNotification: u8,  // BOOLEAN
        NotificationHandle: *mut *mut core::ffi::c_void  // HANDLE* out
    ) -> u32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("IPHLPAPI.dll")]
public static extern uint NotifyNetworkConnectivityHintChange(IntPtr Callback, IntPtr CallerContext, [MarshalAs(UnmanagedType.U1)] bool InitialNotification, IntPtr NotificationHandle);
"@
$api = Add-Type -MemberDefinition $sig -Name 'IPHLPAPI_NotifyNetworkConnectivityHintChange' -Namespace Win32 -PassThru
# $api::NotifyNetworkConnectivityHintChange(Callback, CallerContext, InitialNotification, NotificationHandle)

#uselib "IPHLPAPI.dll"
#func global NotifyNetworkConnectivityHintChange "NotifyNetworkConnectivityHintChange" sptr, sptr, sptr, sptr
; NotifyNetworkConnectivityHintChange Callback, CallerContext, InitialNotification, NotificationHandle   ; 戻り値は stat
; Callback : PNETWORK_CONNECTIVITY_HINT_CHANGE_CALLBACK -> "sptr"
; CallerContext : void* optional -> "sptr"
; InitialNotification : BOOLEAN -> "sptr"
; NotificationHandle : HANDLE* 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 "IPHLPAPI.dll"
#cfunc global NotifyNetworkConnectivityHintChange "NotifyNetworkConnectivityHintChange" sptr, sptr, int, sptr
; res = NotifyNetworkConnectivityHintChange(Callback, CallerContext, InitialNotification, NotificationHandle)
; Callback : PNETWORK_CONNECTIVITY_HINT_CHANGE_CALLBACK -> "sptr"
; CallerContext : void* optional -> "sptr"
; InitialNotification : BOOLEAN -> "int"
; NotificationHandle : HANDLE* out -> "sptr"

; WIN32_ERROR NotifyNetworkConnectivityHintChange(PNETWORK_CONNECTIVITY_HINT_CHANGE_CALLBACK Callback, void* CallerContext, BOOLEAN InitialNotification, HANDLE* NotificationHandle)
#uselib "IPHLPAPI.dll"
#cfunc global NotifyNetworkConnectivityHintChange "NotifyNetworkConnectivityHintChange" intptr, intptr, int, intptr
; res = NotifyNetworkConnectivityHintChange(Callback, CallerContext, InitialNotification, NotificationHandle)
; Callback : PNETWORK_CONNECTIVITY_HINT_CHANGE_CALLBACK -> "intptr"
; CallerContext : void* optional -> "intptr"
; InitialNotification : BOOLEAN -> "int"
; NotificationHandle : HANDLE* out -> "intptr"

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

var (
	iphlpapi = windows.NewLazySystemDLL("IPHLPAPI.dll")
	procNotifyNetworkConnectivityHintChange = iphlpapi.NewProc("NotifyNetworkConnectivityHintChange")
)

// Callback (PNETWORK_CONNECTIVITY_HINT_CHANGE_CALLBACK), CallerContext (void* optional), InitialNotification (BOOLEAN), NotificationHandle (HANDLE* out)
r1, _, err := procNotifyNetworkConnectivityHintChange.Call(
	uintptr(Callback),
	uintptr(CallerContext),
	uintptr(InitialNotification),
	uintptr(NotificationHandle),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // WIN32_ERROR

function NotifyNetworkConnectivityHintChange(
  Callback: Pointer;   // PNETWORK_CONNECTIVITY_HINT_CHANGE_CALLBACK
  CallerContext: Pointer;   // void* optional
  InitialNotification: ByteBool;   // BOOLEAN
  NotificationHandle: Pointer   // HANDLE* out
): DWORD; stdcall;
  external 'IPHLPAPI.dll' name 'NotifyNetworkConnectivityHintChange';

result := DllCall("IPHLPAPI\NotifyNetworkConnectivityHintChange"
    , "Ptr", Callback   ; PNETWORK_CONNECTIVITY_HINT_CHANGE_CALLBACK
    , "Ptr", CallerContext   ; void* optional
    , "Char", InitialNotification   ; BOOLEAN
    , "Ptr", NotificationHandle   ; HANDLE* out
    , "UInt")   ; return: WIN32_ERROR

●NotifyNetworkConnectivityHintChange(Callback, CallerContext, InitialNotification, NotificationHandle) = DLL("IPHLPAPI.dll", "dword NotifyNetworkConnectivityHintChange(void*, void*, byte, void*)")
# 呼び出し: NotifyNetworkConnectivityHintChange(Callback, CallerContext, InitialNotification, NotificationHandle)
# Callback : PNETWORK_CONNECTIVITY_HINT_CHANGE_CALLBACK -> "void*"
# CallerContext : void* optional -> "void*"
# InitialNotification : BOOLEAN -> "byte"
# NotificationHandle : 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)。

const std = @import("std");

extern "iphlpapi" fn NotifyNetworkConnectivityHintChange(
    Callback: ?*anyopaque, // PNETWORK_CONNECTIVITY_HINT_CHANGE_CALLBACK
    CallerContext: ?*anyopaque, // void* optional
    InitialNotification: u8, // BOOLEAN
    NotificationHandle: ?*anyopaque // HANDLE* out
) callconv(std.os.windows.WINAPI) u32;

proc NotifyNetworkConnectivityHintChange(
    Callback: pointer,  # PNETWORK_CONNECTIVITY_HINT_CHANGE_CALLBACK
    CallerContext: pointer,  # void* optional
    InitialNotification: uint8,  # BOOLEAN
    NotificationHandle: pointer  # HANDLE* out
): uint32 {.importc: "NotifyNetworkConnectivityHintChange", stdcall, dynlib: "IPHLPAPI.dll".}

pragma(lib, "iphlpapi");
extern(Windows)
uint NotifyNetworkConnectivityHintChange(
    void* Callback,   // PNETWORK_CONNECTIVITY_HINT_CHANGE_CALLBACK
    void* CallerContext,   // void* optional
    ubyte InitialNotification,   // BOOLEAN
    void* NotificationHandle   // HANDLE* out
);

ccall((:NotifyNetworkConnectivityHintChange, "IPHLPAPI.dll"), stdcall, UInt32,
      (Ptr{Cvoid}, Ptr{Cvoid}, UInt8, Ptr{Cvoid}),
      Callback, CallerContext, InitialNotification, NotificationHandle)
# Callback : PNETWORK_CONNECTIVITY_HINT_CHANGE_CALLBACK -> Ptr{Cvoid}
# CallerContext : void* optional -> Ptr{Cvoid}
# InitialNotification : BOOLEAN -> UInt8
# NotificationHandle : HANDLE* out -> 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 NotifyNetworkConnectivityHintChange(
    void* Callback,
    void* CallerContext,
    uint8_t InitialNotification,
    void* NotificationHandle);
]]
local iphlpapi = ffi.load("iphlpapi")
-- iphlpapi.NotifyNetworkConnectivityHintChange(Callback, CallerContext, InitialNotification, NotificationHandle)
-- Callback : PNETWORK_CONNECTIVITY_HINT_CHANGE_CALLBACK
-- CallerContext : void* optional
-- InitialNotification : BOOLEAN
-- NotificationHandle : HANDLE* out
-- 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('IPHLPAPI.dll');
const NotifyNetworkConnectivityHintChange = lib.func('__stdcall', 'NotifyNetworkConnectivityHintChange', 'uint32_t', ['void *', 'void *', 'uint8_t', 'void *']);
// NotifyNetworkConnectivityHintChange(Callback, CallerContext, InitialNotification, NotificationHandle)
// Callback : PNETWORK_CONNECTIVITY_HINT_CHANGE_CALLBACK -> 'void *'
// CallerContext : void* optional -> 'void *'
// InitialNotification : BOOLEAN -> 'uint8_t'
// NotificationHandle : HANDLE* out -> 'void *'
// 出力ポインタは koffi.out(...) で包む。構造体は koffi.struct で定義。
// コールバック(関数ポインタ)は koffi.proto/koffi.register で型を定義して渡す(素の void* では JS 関数を渡せない)。

const lib = Deno.dlopen("IPHLPAPI.dll", {
  NotifyNetworkConnectivityHintChange: { parameters: ["pointer", "pointer", "u8", "pointer"], result: "u32" },
});
// lib.symbols.NotifyNetworkConnectivityHintChange(Callback, CallerContext, InitialNotification, NotificationHandle)
// Callback : PNETWORK_CONNECTIVITY_HINT_CHANGE_CALLBACK -> "pointer"
// CallerContext : void* optional -> "pointer"
// InitialNotification : BOOLEAN -> "u8"
// NotificationHandle : HANDLE* out -> "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 NotifyNetworkConnectivityHintChange(
    void* Callback,
    void* CallerContext,
    uint8_t InitialNotification,
    void* NotificationHandle);
C, "IPHLPAPI.dll");
// $ffi->NotifyNetworkConnectivityHintChange(Callback, CallerContext, InitialNotification, NotificationHandle);
// Callback : PNETWORK_CONNECTIVITY_HINT_CHANGE_CALLBACK
// CallerContext : void* optional
// InitialNotification : BOOLEAN
// NotificationHandle : HANDLE* out
// 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 Iphlpapi extends StdCallLibrary {
    Iphlpapi INSTANCE = Native.load("iphlpapi", Iphlpapi.class);
    int NotifyNetworkConnectivityHintChange(
        Callback Callback,   // PNETWORK_CONNECTIVITY_HINT_CHANGE_CALLBACK
        Pointer CallerContext,   // void* optional
        byte InitialNotification,   // BOOLEAN
        Pointer NotificationHandle   // HANDLE* out
    );
}

@[Link("iphlpapi")]
lib LibIPHLPAPI
  fun NotifyNetworkConnectivityHintChange = NotifyNetworkConnectivityHintChange(
    Callback : Void*,   # PNETWORK_CONNECTIVITY_HINT_CHANGE_CALLBACK
    CallerContext : Void*,   # void* optional
    InitialNotification : UInt8,   # BOOLEAN
    NotificationHandle : Void*   # HANDLE* out
  ) : 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 NotifyNetworkConnectivityHintChangeNative = Uint32 Function(Pointer<Void>, Pointer<Void>, Uint8, Pointer<Void>);
typedef NotifyNetworkConnectivityHintChangeDart = int Function(Pointer<Void>, Pointer<Void>, int, Pointer<Void>);
final NotifyNetworkConnectivityHintChange = DynamicLibrary.open('IPHLPAPI.dll')
    .lookupFunction<NotifyNetworkConnectivityHintChangeNative, NotifyNetworkConnectivityHintChangeDart>('NotifyNetworkConnectivityHintChange');
// Callback : PNETWORK_CONNECTIVITY_HINT_CHANGE_CALLBACK -> Pointer<Void>
// CallerContext : void* optional -> Pointer<Void>
// InitialNotification : BOOLEAN -> Uint8
// NotificationHandle : HANDLE* out -> Pointer<Void>
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。

{$mode objfpc}{$H+}
function NotifyNetworkConnectivityHintChange(
  Callback: Pointer;   // PNETWORK_CONNECTIVITY_HINT_CHANGE_CALLBACK
  CallerContext: Pointer;   // void* optional
  InitialNotification: ByteBool;   // BOOLEAN
  NotificationHandle: Pointer   // HANDLE* out
): DWORD; stdcall;
  external 'IPHLPAPI.dll' name 'NotifyNetworkConnectivityHintChange';

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

foreign import stdcall safe "NotifyNetworkConnectivityHintChange"
  c_NotifyNetworkConnectivityHintChange :: Ptr () -> Ptr () -> Word8 -> Ptr () -> IO Word32
-- Callback : PNETWORK_CONNECTIVITY_HINT_CHANGE_CALLBACK -> Ptr ()
-- CallerContext : void* optional -> Ptr ()
-- InitialNotification : BOOLEAN -> Word8
-- NotificationHandle : HANDLE* out -> 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 notifynetworkconnectivityhintchange =
  foreign "NotifyNetworkConnectivityHintChange"
    ((ptr void) @-> (ptr void) @-> uint8_t @-> (ptr void) @-> returning uint32_t)
(* Callback : PNETWORK_CONNECTIVITY_HINT_CHANGE_CALLBACK -> (ptr void) *)
(* CallerContext : void* optional -> (ptr void) *)
(* InitialNotification : BOOLEAN -> uint8_t *)
(* NotificationHandle : HANDLE* out -> (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 iphlpapi (t "IPHLPAPI.dll"))
(cffi:use-foreign-library iphlpapi)

(cffi:defcfun ("NotifyNetworkConnectivityHintChange" notify-network-connectivity-hint-change :convention :stdcall) :uint32
  (callback :pointer)   ; PNETWORK_CONNECTIVITY_HINT_CHANGE_CALLBACK
  (caller-context :pointer)   ; void* optional
  (initial-notification :uint8)   ; BOOLEAN
  (notification-handle :pointer))   ; HANDLE* out
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。

use Win32::API;
my $NotifyNetworkConnectivityHintChange = Win32::API::More->new('IPHLPAPI',
    'DWORD NotifyNetworkConnectivityHintChange(LPVOID Callback, LPVOID CallerContext, BYTE InitialNotification, HANDLE NotificationHandle)');
# my $ret = $NotifyNetworkConnectivityHintChange->Call($Callback, $CallerContext, $InitialNotification, $NotificationHandle);
# Callback : PNETWORK_CONNECTIVITY_HINT_CHANGE_CALLBACK -> LPVOID
# CallerContext : void* optional -> LPVOID
# InitialNotification : BOOLEAN -> BYTE
# NotificationHandle : HANDLE* out -> HANDLE
# 値渡し構造体は pack() した文字列、または Win32::API::Struct を使用。
# コールバック(関数ポインタ)は Perl sub を直接渡せません。Win32::API::Callback を使用してください。