GetNetworkConnectivityHintForInterface

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

WIN32_ERROR GetNetworkConnectivityHintForInterface(
    DWORD InterfaceIndex,
    NL_NETWORK_CONNECTIVITY_HINT* ConnectivityHint
);

<DllImport("IPHLPAPI.dll", ExactSpelling:=True)>
Public Shared Function GetNetworkConnectivityHintForInterface(
    InterfaceIndex As UInteger,   ' DWORD
    ConnectivityHint As IntPtr   ' NL_NETWORK_CONNECTIVITY_HINT* out
) As UInteger
End Function

' InterfaceIndex : DWORD
' ConnectivityHint : NL_NETWORK_CONNECTIVITY_HINT* out
Declare PtrSafe Function GetNetworkConnectivityHintForInterface Lib "iphlpapi" ( _
    ByVal InterfaceIndex As Long, _
    ByVal ConnectivityHint 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

GetNetworkConnectivityHintForInterface = ctypes.windll.iphlpapi.GetNetworkConnectivityHintForInterface
GetNetworkConnectivityHintForInterface.restype = wintypes.DWORD
GetNetworkConnectivityHintForInterface.argtypes = [
    wintypes.DWORD,  # InterfaceIndex : DWORD
    ctypes.c_void_p,  # ConnectivityHint : NL_NETWORK_CONNECTIVITY_HINT* out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('IPHLPAPI.dll')
GetNetworkConnectivityHintForInterface = Fiddle::Function.new(
  lib['GetNetworkConnectivityHintForInterface'],
  [
    -Fiddle::TYPE_INT,  # InterfaceIndex : DWORD
    Fiddle::TYPE_VOIDP,  # ConnectivityHint : NL_NETWORK_CONNECTIVITY_HINT* out
  ],
  -Fiddle::TYPE_INT)

#[link(name = "iphlpapi")]
extern "system" {
    fn GetNetworkConnectivityHintForInterface(
        InterfaceIndex: u32,  // DWORD
        ConnectivityHint: *mut NL_NETWORK_CONNECTIVITY_HINT  // NL_NETWORK_CONNECTIVITY_HINT* out
    ) -> u32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("IPHLPAPI.dll")]
public static extern uint GetNetworkConnectivityHintForInterface(uint InterfaceIndex, IntPtr ConnectivityHint);
"@
$api = Add-Type -MemberDefinition $sig -Name 'IPHLPAPI_GetNetworkConnectivityHintForInterface' -Namespace Win32 -PassThru
# $api::GetNetworkConnectivityHintForInterface(InterfaceIndex, ConnectivityHint)

#uselib "IPHLPAPI.dll"
#func global GetNetworkConnectivityHintForInterface "GetNetworkConnectivityHintForInterface" sptr, sptr
; GetNetworkConnectivityHintForInterface InterfaceIndex, varptr(ConnectivityHint)   ; 戻り値は stat
; InterfaceIndex : DWORD -> "sptr"
; ConnectivityHint : NL_NETWORK_CONNECTIVITY_HINT* 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 GetNetworkConnectivityHintForInterface "GetNetworkConnectivityHintForInterface" int, var
; res = GetNetworkConnectivityHintForInterface(InterfaceIndex, ConnectivityHint)
; InterfaceIndex : DWORD -> "int"
; ConnectivityHint : NL_NETWORK_CONNECTIVITY_HINT* 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。

; WIN32_ERROR GetNetworkConnectivityHintForInterface(DWORD InterfaceIndex, NL_NETWORK_CONNECTIVITY_HINT* ConnectivityHint)
#uselib "IPHLPAPI.dll"
#cfunc global GetNetworkConnectivityHintForInterface "GetNetworkConnectivityHintForInterface" int, var
; res = GetNetworkConnectivityHintForInterface(InterfaceIndex, ConnectivityHint)
; InterfaceIndex : DWORD -> "int"
; ConnectivityHint : NL_NETWORK_CONNECTIVITY_HINT* 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 (
	iphlpapi = windows.NewLazySystemDLL("IPHLPAPI.dll")
	procGetNetworkConnectivityHintForInterface = iphlpapi.NewProc("GetNetworkConnectivityHintForInterface")
)

// InterfaceIndex (DWORD), ConnectivityHint (NL_NETWORK_CONNECTIVITY_HINT* out)
r1, _, err := procGetNetworkConnectivityHintForInterface.Call(
	uintptr(InterfaceIndex),
	uintptr(ConnectivityHint),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // WIN32_ERROR

function GetNetworkConnectivityHintForInterface(
  InterfaceIndex: DWORD;   // DWORD
  ConnectivityHint: Pointer   // NL_NETWORK_CONNECTIVITY_HINT* out
): DWORD; stdcall;
  external 'IPHLPAPI.dll' name 'GetNetworkConnectivityHintForInterface';

result := DllCall("IPHLPAPI\GetNetworkConnectivityHintForInterface"
    , "UInt", InterfaceIndex   ; DWORD
    , "Ptr", ConnectivityHint   ; NL_NETWORK_CONNECTIVITY_HINT* out
    , "UInt")   ; return: WIN32_ERROR

●GetNetworkConnectivityHintForInterface(InterfaceIndex, ConnectivityHint) = DLL("IPHLPAPI.dll", "dword GetNetworkConnectivityHintForInterface(dword, void*)")
# 呼び出し: GetNetworkConnectivityHintForInterface(InterfaceIndex, ConnectivityHint)
# InterfaceIndex : DWORD -> "dword"
# ConnectivityHint : NL_NETWORK_CONNECTIVITY_HINT* 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)。