GetNetworkConnectivityHint

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

WIN32_ERROR GetNetworkConnectivityHint(
    NL_NETWORK_CONNECTIVITY_HINT* ConnectivityHint
);

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

' ConnectivityHint : NL_NETWORK_CONNECTIVITY_HINT* out
Declare PtrSafe Function GetNetworkConnectivityHint Lib "iphlpapi" ( _
    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

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

require 'fiddle'
require 'fiddle/import'

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

#[link(name = "iphlpapi")]
extern "system" {
    fn GetNetworkConnectivityHint(
        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 GetNetworkConnectivityHint(IntPtr ConnectivityHint);
"@
$api = Add-Type -MemberDefinition $sig -Name 'IPHLPAPI_GetNetworkConnectivityHint' -Namespace Win32 -PassThru
# $api::GetNetworkConnectivityHint(ConnectivityHint)

#uselib "IPHLPAPI.dll"
#func global GetNetworkConnectivityHint "GetNetworkConnectivityHint" sptr
; GetNetworkConnectivityHint varptr(ConnectivityHint)   ; 戻り値は stat
; 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 GetNetworkConnectivityHint "GetNetworkConnectivityHint" var
; res = GetNetworkConnectivityHint(ConnectivityHint)
; 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 GetNetworkConnectivityHint(NL_NETWORK_CONNECTIVITY_HINT* ConnectivityHint)
#uselib "IPHLPAPI.dll"
#cfunc global GetNetworkConnectivityHint "GetNetworkConnectivityHint" var
; res = GetNetworkConnectivityHint(ConnectivityHint)
; 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")
	procGetNetworkConnectivityHint = iphlpapi.NewProc("GetNetworkConnectivityHint")
)

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

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

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

●GetNetworkConnectivityHint(ConnectivityHint) = DLL("IPHLPAPI.dll", "dword GetNetworkConnectivityHint(void*)")
# 呼び出し: GetNetworkConnectivityHint(ConnectivityHint)
# 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)。