PxeDhcpIsValid

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

DWORD PxeDhcpIsValid(
    void* pPacket,
    DWORD uPacketLen,
    BOOL bRequestPacket,
    BOOL* pbPxeOptionPresent   // optional
);

<DllImport("WDSPXE.dll", ExactSpelling:=True)>
Public Shared Function PxeDhcpIsValid(
    pPacket As IntPtr,   ' void*
    uPacketLen As UInteger,   ' DWORD
    bRequestPacket As Boolean,   ' BOOL
    pbPxeOptionPresent As IntPtr   ' BOOL* optional, out
) As UInteger
End Function

' pPacket : void*
' uPacketLen : DWORD
' bRequestPacket : BOOL
' pbPxeOptionPresent : BOOL* optional, out
Declare PtrSafe Function PxeDhcpIsValid Lib "wdspxe" ( _
    ByVal pPacket As LongPtr, _
    ByVal uPacketLen As Long, _
    ByVal bRequestPacket As Long, _
    ByVal pbPxeOptionPresent 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

PxeDhcpIsValid = ctypes.windll.wdspxe.PxeDhcpIsValid
PxeDhcpIsValid.restype = wintypes.DWORD
PxeDhcpIsValid.argtypes = [
    ctypes.POINTER(None),  # pPacket : void*
    wintypes.DWORD,  # uPacketLen : DWORD
    wintypes.BOOL,  # bRequestPacket : BOOL
    ctypes.c_void_p,  # pbPxeOptionPresent : BOOL* optional, out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('WDSPXE.dll')
PxeDhcpIsValid = Fiddle::Function.new(
  lib['PxeDhcpIsValid'],
  [
    Fiddle::TYPE_VOIDP,  # pPacket : void*
    -Fiddle::TYPE_INT,  # uPacketLen : DWORD
    Fiddle::TYPE_INT,  # bRequestPacket : BOOL
    Fiddle::TYPE_VOIDP,  # pbPxeOptionPresent : BOOL* optional, out
  ],
  -Fiddle::TYPE_INT)

#[link(name = "wdspxe")]
extern "system" {
    fn PxeDhcpIsValid(
        pPacket: *mut (),  // void*
        uPacketLen: u32,  // DWORD
        bRequestPacket: i32,  // BOOL
        pbPxeOptionPresent: *mut i32  // BOOL* optional, out
    ) -> u32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("WDSPXE.dll")]
public static extern uint PxeDhcpIsValid(IntPtr pPacket, uint uPacketLen, bool bRequestPacket, IntPtr pbPxeOptionPresent);
"@
$api = Add-Type -MemberDefinition $sig -Name 'WDSPXE_PxeDhcpIsValid' -Namespace Win32 -PassThru
# $api::PxeDhcpIsValid(pPacket, uPacketLen, bRequestPacket, pbPxeOptionPresent)

#uselib "WDSPXE.dll"
#func global PxeDhcpIsValid "PxeDhcpIsValid" sptr, sptr, sptr, sptr
; PxeDhcpIsValid pPacket, uPacketLen, bRequestPacket, pbPxeOptionPresent   ; 戻り値は stat
; pPacket : void* -> "sptr"
; uPacketLen : DWORD -> "sptr"
; bRequestPacket : BOOL -> "sptr"
; pbPxeOptionPresent : BOOL* optional, 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 "WDSPXE.dll"
#cfunc global PxeDhcpIsValid "PxeDhcpIsValid" sptr, int, int, int
; res = PxeDhcpIsValid(pPacket, uPacketLen, bRequestPacket, pbPxeOptionPresent)
; pPacket : void* -> "sptr"
; uPacketLen : DWORD -> "int"
; bRequestPacket : BOOL -> "int"
; pbPxeOptionPresent : BOOL* optional, out -> "int"

; DWORD PxeDhcpIsValid(void* pPacket, DWORD uPacketLen, BOOL bRequestPacket, BOOL* pbPxeOptionPresent)
#uselib "WDSPXE.dll"
#cfunc global PxeDhcpIsValid "PxeDhcpIsValid" intptr, int, int, int
; res = PxeDhcpIsValid(pPacket, uPacketLen, bRequestPacket, pbPxeOptionPresent)
; pPacket : void* -> "intptr"
; uPacketLen : DWORD -> "int"
; bRequestPacket : BOOL -> "int"
; pbPxeOptionPresent : BOOL* optional, out -> "int"

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

var (
	wdspxe = windows.NewLazySystemDLL("WDSPXE.dll")
	procPxeDhcpIsValid = wdspxe.NewProc("PxeDhcpIsValid")
)

// pPacket (void*), uPacketLen (DWORD), bRequestPacket (BOOL), pbPxeOptionPresent (BOOL* optional, out)
r1, _, err := procPxeDhcpIsValid.Call(
	uintptr(pPacket),
	uintptr(uPacketLen),
	uintptr(bRequestPacket),
	uintptr(pbPxeOptionPresent),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // DWORD

function PxeDhcpIsValid(
  pPacket: Pointer;   // void*
  uPacketLen: DWORD;   // DWORD
  bRequestPacket: BOOL;   // BOOL
  pbPxeOptionPresent: Pointer   // BOOL* optional, out
): DWORD; stdcall;
  external 'WDSPXE.dll' name 'PxeDhcpIsValid';

result := DllCall("WDSPXE\PxeDhcpIsValid"
    , "Ptr", pPacket   ; void*
    , "UInt", uPacketLen   ; DWORD
    , "Int", bRequestPacket   ; BOOL
    , "Ptr", pbPxeOptionPresent   ; BOOL* optional, out
    , "UInt")   ; return: DWORD

●PxeDhcpIsValid(pPacket, uPacketLen, bRequestPacket, pbPxeOptionPresent) = DLL("WDSPXE.dll", "dword PxeDhcpIsValid(void*, dword, bool, void*)")
# 呼び出し: PxeDhcpIsValid(pPacket, uPacketLen, bRequestPacket, pbPxeOptionPresent)
# pPacket : void* -> "void*"
# uPacketLen : DWORD -> "dword"
# bRequestPacket : BOOL -> "bool"
# pbPxeOptionPresent : BOOL* optional, 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)。