PxeDhcpInitialize

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

DWORD PxeDhcpInitialize(
    void* pRecvPacket,
    DWORD uRecvPacketLen,
    void* pReplyPacket,
    DWORD uMaxReplyPacketLen,
    DWORD* puReplyPacketLen
);

<DllImport("WDSPXE.dll", ExactSpelling:=True)>
Public Shared Function PxeDhcpInitialize(
    pRecvPacket As IntPtr,   ' void*
    uRecvPacketLen As UInteger,   ' DWORD
    pReplyPacket As IntPtr,   ' void* out
    uMaxReplyPacketLen As UInteger,   ' DWORD
    <Out> ByRef puReplyPacketLen As UInteger   ' DWORD* out
) As UInteger
End Function

' pRecvPacket : void*
' uRecvPacketLen : DWORD
' pReplyPacket : void* out
' uMaxReplyPacketLen : DWORD
' puReplyPacketLen : DWORD* out
Declare PtrSafe Function PxeDhcpInitialize Lib "wdspxe" ( _
    ByVal pRecvPacket As LongPtr, _
    ByVal uRecvPacketLen As Long, _
    ByVal pReplyPacket As LongPtr, _
    ByVal uMaxReplyPacketLen As Long, _
    ByRef puReplyPacketLen 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

PxeDhcpInitialize = ctypes.windll.wdspxe.PxeDhcpInitialize
PxeDhcpInitialize.restype = wintypes.DWORD
PxeDhcpInitialize.argtypes = [
    ctypes.POINTER(None),  # pRecvPacket : void*
    wintypes.DWORD,  # uRecvPacketLen : DWORD
    ctypes.POINTER(None),  # pReplyPacket : void* out
    wintypes.DWORD,  # uMaxReplyPacketLen : DWORD
    ctypes.POINTER(wintypes.DWORD),  # puReplyPacketLen : DWORD* out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('WDSPXE.dll')
PxeDhcpInitialize = Fiddle::Function.new(
  lib['PxeDhcpInitialize'],
  [
    Fiddle::TYPE_VOIDP,  # pRecvPacket : void*
    -Fiddle::TYPE_INT,  # uRecvPacketLen : DWORD
    Fiddle::TYPE_VOIDP,  # pReplyPacket : void* out
    -Fiddle::TYPE_INT,  # uMaxReplyPacketLen : DWORD
    Fiddle::TYPE_VOIDP,  # puReplyPacketLen : DWORD* out
  ],
  -Fiddle::TYPE_INT)

#[link(name = "wdspxe")]
extern "system" {
    fn PxeDhcpInitialize(
        pRecvPacket: *mut (),  // void*
        uRecvPacketLen: u32,  // DWORD
        pReplyPacket: *mut (),  // void* out
        uMaxReplyPacketLen: u32,  // DWORD
        puReplyPacketLen: *mut u32  // DWORD* out
    ) -> u32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("WDSPXE.dll")]
public static extern uint PxeDhcpInitialize(IntPtr pRecvPacket, uint uRecvPacketLen, IntPtr pReplyPacket, uint uMaxReplyPacketLen, out uint puReplyPacketLen);
"@
$api = Add-Type -MemberDefinition $sig -Name 'WDSPXE_PxeDhcpInitialize' -Namespace Win32 -PassThru
# $api::PxeDhcpInitialize(pRecvPacket, uRecvPacketLen, pReplyPacket, uMaxReplyPacketLen, puReplyPacketLen)

#uselib "WDSPXE.dll"
#func global PxeDhcpInitialize "PxeDhcpInitialize" sptr, sptr, sptr, sptr, sptr
; PxeDhcpInitialize pRecvPacket, uRecvPacketLen, pReplyPacket, uMaxReplyPacketLen, varptr(puReplyPacketLen)   ; 戻り値は stat
; pRecvPacket : void* -> "sptr"
; uRecvPacketLen : DWORD -> "sptr"
; pReplyPacket : void* out -> "sptr"
; uMaxReplyPacketLen : DWORD -> "sptr"
; puReplyPacketLen : DWORD* 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 PxeDhcpInitialize "PxeDhcpInitialize" sptr, int, sptr, int, var
; res = PxeDhcpInitialize(pRecvPacket, uRecvPacketLen, pReplyPacket, uMaxReplyPacketLen, puReplyPacketLen)
; pRecvPacket : void* -> "sptr"
; uRecvPacketLen : DWORD -> "int"
; pReplyPacket : void* out -> "sptr"
; uMaxReplyPacketLen : DWORD -> "int"
; puReplyPacketLen : DWORD* 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 PxeDhcpInitialize(void* pRecvPacket, DWORD uRecvPacketLen, void* pReplyPacket, DWORD uMaxReplyPacketLen, DWORD* puReplyPacketLen)
#uselib "WDSPXE.dll"
#cfunc global PxeDhcpInitialize "PxeDhcpInitialize" intptr, int, intptr, int, var
; res = PxeDhcpInitialize(pRecvPacket, uRecvPacketLen, pReplyPacket, uMaxReplyPacketLen, puReplyPacketLen)
; pRecvPacket : void* -> "intptr"
; uRecvPacketLen : DWORD -> "int"
; pReplyPacket : void* out -> "intptr"
; uMaxReplyPacketLen : DWORD -> "int"
; puReplyPacketLen : DWORD* 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 (
	wdspxe = windows.NewLazySystemDLL("WDSPXE.dll")
	procPxeDhcpInitialize = wdspxe.NewProc("PxeDhcpInitialize")
)

// pRecvPacket (void*), uRecvPacketLen (DWORD), pReplyPacket (void* out), uMaxReplyPacketLen (DWORD), puReplyPacketLen (DWORD* out)
r1, _, err := procPxeDhcpInitialize.Call(
	uintptr(pRecvPacket),
	uintptr(uRecvPacketLen),
	uintptr(pReplyPacket),
	uintptr(uMaxReplyPacketLen),
	uintptr(puReplyPacketLen),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // DWORD

function PxeDhcpInitialize(
  pRecvPacket: Pointer;   // void*
  uRecvPacketLen: DWORD;   // DWORD
  pReplyPacket: Pointer;   // void* out
  uMaxReplyPacketLen: DWORD;   // DWORD
  puReplyPacketLen: Pointer   // DWORD* out
): DWORD; stdcall;
  external 'WDSPXE.dll' name 'PxeDhcpInitialize';

result := DllCall("WDSPXE\PxeDhcpInitialize"
    , "Ptr", pRecvPacket   ; void*
    , "UInt", uRecvPacketLen   ; DWORD
    , "Ptr", pReplyPacket   ; void* out
    , "UInt", uMaxReplyPacketLen   ; DWORD
    , "Ptr", puReplyPacketLen   ; DWORD* out
    , "UInt")   ; return: DWORD

●PxeDhcpInitialize(pRecvPacket, uRecvPacketLen, pReplyPacket, uMaxReplyPacketLen, puReplyPacketLen) = DLL("WDSPXE.dll", "dword PxeDhcpInitialize(void*, dword, void*, dword, void*)")
# 呼び出し: PxeDhcpInitialize(pRecvPacket, uRecvPacketLen, pReplyPacket, uMaxReplyPacketLen, puReplyPacketLen)
# pRecvPacket : void* -> "void*"
# uRecvPacketLen : DWORD -> "dword"
# pReplyPacket : void* out -> "void*"
# uMaxReplyPacketLen : DWORD -> "dword"
# puReplyPacketLen : DWORD* 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)。