PfTestPacket

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

DWORD PfTestPacket(
    void* pInInterface,
    void* pOutInterface,
    DWORD cBytes,
    BYTE* pbPacket,
    PFFORWARD_ACTION* ppAction
);

<DllImport("IPHLPAPI.dll", ExactSpelling:=True)>
Public Shared Function PfTestPacket(
    pInInterface As IntPtr,   ' void* in/out
    pOutInterface As IntPtr,   ' void* in/out
    cBytes As UInteger,   ' DWORD
    pbPacket As IntPtr,   ' BYTE* in/out
    ByRef ppAction As Integer   ' PFFORWARD_ACTION* in/out
) As UInteger
End Function

' pInInterface : void* in/out
' pOutInterface : void* in/out
' cBytes : DWORD
' pbPacket : BYTE* in/out
' ppAction : PFFORWARD_ACTION* in/out
Declare PtrSafe Function PfTestPacket Lib "iphlpapi" ( _
    ByVal pInInterface As LongPtr, _
    ByVal pOutInterface As LongPtr, _
    ByVal cBytes As Long, _
    ByVal pbPacket As LongPtr, _
    ByRef ppAction As Long) As Long
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

PfTestPacket = ctypes.windll.iphlpapi.PfTestPacket
PfTestPacket.restype = wintypes.DWORD
PfTestPacket.argtypes = [
    ctypes.POINTER(None),  # pInInterface : void* in/out
    ctypes.POINTER(None),  # pOutInterface : void* in/out
    wintypes.DWORD,  # cBytes : DWORD
    ctypes.POINTER(ctypes.c_ubyte),  # pbPacket : BYTE* in/out
    ctypes.c_void_p,  # ppAction : PFFORWARD_ACTION* in/out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('IPHLPAPI.dll')
PfTestPacket = Fiddle::Function.new(
  lib['PfTestPacket'],
  [
    Fiddle::TYPE_VOIDP,  # pInInterface : void* in/out
    Fiddle::TYPE_VOIDP,  # pOutInterface : void* in/out
    -Fiddle::TYPE_INT,  # cBytes : DWORD
    Fiddle::TYPE_VOIDP,  # pbPacket : BYTE* in/out
    Fiddle::TYPE_VOIDP,  # ppAction : PFFORWARD_ACTION* in/out
  ],
  -Fiddle::TYPE_INT)

#[link(name = "iphlpapi")]
extern "system" {
    fn PfTestPacket(
        pInInterface: *mut (),  // void* in/out
        pOutInterface: *mut (),  // void* in/out
        cBytes: u32,  // DWORD
        pbPacket: *mut u8,  // BYTE* in/out
        ppAction: *mut i32  // PFFORWARD_ACTION* in/out
    ) -> u32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("IPHLPAPI.dll")]
public static extern uint PfTestPacket(IntPtr pInInterface, IntPtr pOutInterface, uint cBytes, IntPtr pbPacket, ref int ppAction);
"@
$api = Add-Type -MemberDefinition $sig -Name 'IPHLPAPI_PfTestPacket' -Namespace Win32 -PassThru
# $api::PfTestPacket(pInInterface, pOutInterface, cBytes, pbPacket, ppAction)

#uselib "IPHLPAPI.dll"
#func global PfTestPacket "PfTestPacket" sptr, sptr, sptr, sptr, sptr
; PfTestPacket pInInterface, pOutInterface, cBytes, varptr(pbPacket), ppAction   ; 戻り値は stat
; pInInterface : void* in/out -> "sptr"
; pOutInterface : void* in/out -> "sptr"
; cBytes : DWORD -> "sptr"
; pbPacket : BYTE* in/out -> "sptr"
; ppAction : PFFORWARD_ACTION* in/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 PfTestPacket "PfTestPacket" sptr, sptr, int, var, int
; res = PfTestPacket(pInInterface, pOutInterface, cBytes, pbPacket, ppAction)
; pInInterface : void* in/out -> "sptr"
; pOutInterface : void* in/out -> "sptr"
; cBytes : DWORD -> "int"
; pbPacket : BYTE* in/out -> "var"
; ppAction : PFFORWARD_ACTION* in/out -> "int"
; ※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 PfTestPacket(void* pInInterface, void* pOutInterface, DWORD cBytes, BYTE* pbPacket, PFFORWARD_ACTION* ppAction)
#uselib "IPHLPAPI.dll"
#cfunc global PfTestPacket "PfTestPacket" intptr, intptr, int, var, int
; res = PfTestPacket(pInInterface, pOutInterface, cBytes, pbPacket, ppAction)
; pInInterface : void* in/out -> "intptr"
; pOutInterface : void* in/out -> "intptr"
; cBytes : DWORD -> "int"
; pbPacket : BYTE* in/out -> "var"
; ppAction : PFFORWARD_ACTION* in/out -> "int"
; ※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")
	procPfTestPacket = iphlpapi.NewProc("PfTestPacket")
)

// pInInterface (void* in/out), pOutInterface (void* in/out), cBytes (DWORD), pbPacket (BYTE* in/out), ppAction (PFFORWARD_ACTION* in/out)
r1, _, err := procPfTestPacket.Call(
	uintptr(pInInterface),
	uintptr(pOutInterface),
	uintptr(cBytes),
	uintptr(pbPacket),
	uintptr(ppAction),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // DWORD

function PfTestPacket(
  pInInterface: Pointer;   // void* in/out
  pOutInterface: Pointer;   // void* in/out
  cBytes: DWORD;   // DWORD
  pbPacket: Pointer;   // BYTE* in/out
  ppAction: Pointer   // PFFORWARD_ACTION* in/out
): DWORD; stdcall;
  external 'IPHLPAPI.dll' name 'PfTestPacket';

result := DllCall("IPHLPAPI\PfTestPacket"
    , "Ptr", pInInterface   ; void* in/out
    , "Ptr", pOutInterface   ; void* in/out
    , "UInt", cBytes   ; DWORD
    , "Ptr", pbPacket   ; BYTE* in/out
    , "Ptr", ppAction   ; PFFORWARD_ACTION* in/out
    , "UInt")   ; return: DWORD

●PfTestPacket(pInInterface, pOutInterface, cBytes, pbPacket, ppAction) = DLL("IPHLPAPI.dll", "dword PfTestPacket(void*, void*, dword, void*, void*)")
# 呼び出し: PfTestPacket(pInInterface, pOutInterface, cBytes, pbPacket, ppAction)
# pInInterface : void* in/out -> "void*"
# pOutInterface : void* in/out -> "void*"
# cBytes : DWORD -> "dword"
# pbPacket : BYTE* in/out -> "void*"
# ppAction : PFFORWARD_ACTION* in/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)。