EnableRouter

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

DWORD EnableRouter(
    HANDLE* pHandle,
    OVERLAPPED* pOverlapped
);

<DllImport("IPHLPAPI.dll", ExactSpelling:=True)>
Public Shared Function EnableRouter(
    pHandle As IntPtr,   ' HANDLE* out
    pOverlapped As IntPtr   ' OVERLAPPED* out
) As UInteger
End Function

' pHandle : HANDLE* out
' pOverlapped : OVERLAPPED* out
Declare PtrSafe Function EnableRouter Lib "iphlpapi" ( _
    ByVal pHandle As LongPtr, _
    ByVal pOverlapped 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

EnableRouter = ctypes.windll.iphlpapi.EnableRouter
EnableRouter.restype = wintypes.DWORD
EnableRouter.argtypes = [
    ctypes.c_void_p,  # pHandle : HANDLE* out
    ctypes.c_void_p,  # pOverlapped : OVERLAPPED* out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('IPHLPAPI.dll')
EnableRouter = Fiddle::Function.new(
  lib['EnableRouter'],
  [
    Fiddle::TYPE_VOIDP,  # pHandle : HANDLE* out
    Fiddle::TYPE_VOIDP,  # pOverlapped : OVERLAPPED* out
  ],
  -Fiddle::TYPE_INT)

#[link(name = "iphlpapi")]
extern "system" {
    fn EnableRouter(
        pHandle: *mut *mut core::ffi::c_void,  // HANDLE* out
        pOverlapped: *mut OVERLAPPED  // OVERLAPPED* out
    ) -> u32;
}
// crates: windows-sys provides ready-made bindings for this API.

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

#uselib "IPHLPAPI.dll"
#func global EnableRouter "EnableRouter" sptr, sptr
; EnableRouter pHandle, varptr(pOverlapped)   ; 戻り値は stat
; pHandle : HANDLE* out -> "sptr"
; pOverlapped : OVERLAPPED* 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 EnableRouter "EnableRouter" sptr, var
; res = EnableRouter(pHandle, pOverlapped)
; pHandle : HANDLE* out -> "sptr"
; pOverlapped : OVERLAPPED* 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。

; DWORD EnableRouter(HANDLE* pHandle, OVERLAPPED* pOverlapped)
#uselib "IPHLPAPI.dll"
#cfunc global EnableRouter "EnableRouter" intptr, var
; res = EnableRouter(pHandle, pOverlapped)
; pHandle : HANDLE* out -> "intptr"
; pOverlapped : OVERLAPPED* 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")
	procEnableRouter = iphlpapi.NewProc("EnableRouter")
)

// pHandle (HANDLE* out), pOverlapped (OVERLAPPED* out)
r1, _, err := procEnableRouter.Call(
	uintptr(pHandle),
	uintptr(pOverlapped),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // DWORD

function EnableRouter(
  pHandle: Pointer;   // HANDLE* out
  pOverlapped: Pointer   // OVERLAPPED* out
): DWORD; stdcall;
  external 'IPHLPAPI.dll' name 'EnableRouter';

result := DllCall("IPHLPAPI\EnableRouter"
    , "Ptr", pHandle   ; HANDLE* out
    , "Ptr", pOverlapped   ; OVERLAPPED* out
    , "UInt")   ; return: DWORD

●EnableRouter(pHandle, pOverlapped) = DLL("IPHLPAPI.dll", "dword EnableRouter(void*, void*)")
# 呼び出し: EnableRouter(pHandle, pOverlapped)
# pHandle : HANDLE* out -> "void*"
# pOverlapped : OVERLAPPED* 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)。