DnsExtractRecordsFromMessage_W

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

INT DnsExtractRecordsFromMessage_W(
    DNS_MESSAGE_BUFFER* pDnsBuffer,
    WORD wMessageLength,
    DNS_RECORDA** ppRecord
);

<DllImport("DNSAPI.dll", ExactSpelling:=True)>
Public Shared Function DnsExtractRecordsFromMessage_W(
    pDnsBuffer As IntPtr,   ' DNS_MESSAGE_BUFFER*
    wMessageLength As UShort,   ' WORD
    ppRecord As IntPtr   ' DNS_RECORDA** out
) As Integer
End Function

' pDnsBuffer : DNS_MESSAGE_BUFFER*
' wMessageLength : WORD
' ppRecord : DNS_RECORDA** out
Declare PtrSafe Function DnsExtractRecordsFromMessage_W Lib "dnsapi" ( _
    ByVal pDnsBuffer As LongPtr, _
    ByVal wMessageLength As Integer, _
    ByVal ppRecord 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

DnsExtractRecordsFromMessage_W = ctypes.windll.dnsapi.DnsExtractRecordsFromMessage_W
DnsExtractRecordsFromMessage_W.restype = ctypes.c_int
DnsExtractRecordsFromMessage_W.argtypes = [
    ctypes.c_void_p,  # pDnsBuffer : DNS_MESSAGE_BUFFER*
    ctypes.c_ushort,  # wMessageLength : WORD
    ctypes.c_void_p,  # ppRecord : DNS_RECORDA** out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('DNSAPI.dll')
DnsExtractRecordsFromMessage_W = Fiddle::Function.new(
  lib['DnsExtractRecordsFromMessage_W'],
  [
    Fiddle::TYPE_VOIDP,  # pDnsBuffer : DNS_MESSAGE_BUFFER*
    -Fiddle::TYPE_SHORT,  # wMessageLength : WORD
    Fiddle::TYPE_VOIDP,  # ppRecord : DNS_RECORDA** out
  ],
  Fiddle::TYPE_INT)

#[link(name = "dnsapi")]
extern "system" {
    fn DnsExtractRecordsFromMessage_W(
        pDnsBuffer: *mut DNS_MESSAGE_BUFFER,  // DNS_MESSAGE_BUFFER*
        wMessageLength: u16,  // WORD
        ppRecord: *mut *mut DNS_RECORDA  // DNS_RECORDA** out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("DNSAPI.dll")]
public static extern int DnsExtractRecordsFromMessage_W(IntPtr pDnsBuffer, ushort wMessageLength, IntPtr ppRecord);
"@
$api = Add-Type -MemberDefinition $sig -Name 'DNSAPI_DnsExtractRecordsFromMessage_W' -Namespace Win32 -PassThru
# $api::DnsExtractRecordsFromMessage_W(pDnsBuffer, wMessageLength, ppRecord)

#uselib "DNSAPI.dll"
#func global DnsExtractRecordsFromMessage_W "DnsExtractRecordsFromMessage_W" sptr, sptr, sptr
; DnsExtractRecordsFromMessage_W varptr(pDnsBuffer), wMessageLength, varptr(ppRecord)   ; 戻り値は stat
; pDnsBuffer : DNS_MESSAGE_BUFFER* -> "sptr"
; wMessageLength : WORD -> "sptr"
; ppRecord : DNS_RECORDA** 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 "DNSAPI.dll"
#cfunc global DnsExtractRecordsFromMessage_W "DnsExtractRecordsFromMessage_W" var, int, var
; res = DnsExtractRecordsFromMessage_W(pDnsBuffer, wMessageLength, ppRecord)
; pDnsBuffer : DNS_MESSAGE_BUFFER* -> "var"
; wMessageLength : WORD -> "int"
; ppRecord : DNS_RECORDA** 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。

; INT DnsExtractRecordsFromMessage_W(DNS_MESSAGE_BUFFER* pDnsBuffer, WORD wMessageLength, DNS_RECORDA** ppRecord)
#uselib "DNSAPI.dll"
#cfunc global DnsExtractRecordsFromMessage_W "DnsExtractRecordsFromMessage_W" var, int, var
; res = DnsExtractRecordsFromMessage_W(pDnsBuffer, wMessageLength, ppRecord)
; pDnsBuffer : DNS_MESSAGE_BUFFER* -> "var"
; wMessageLength : WORD -> "int"
; ppRecord : DNS_RECORDA** 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 (
	dnsapi = windows.NewLazySystemDLL("DNSAPI.dll")
	procDnsExtractRecordsFromMessage_W = dnsapi.NewProc("DnsExtractRecordsFromMessage_W")
)

// pDnsBuffer (DNS_MESSAGE_BUFFER*), wMessageLength (WORD), ppRecord (DNS_RECORDA** out)
r1, _, err := procDnsExtractRecordsFromMessage_W.Call(
	uintptr(pDnsBuffer),
	uintptr(wMessageLength),
	uintptr(ppRecord),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // INT

function DnsExtractRecordsFromMessage_W(
  pDnsBuffer: Pointer;   // DNS_MESSAGE_BUFFER*
  wMessageLength: Word;   // WORD
  ppRecord: Pointer   // DNS_RECORDA** out
): Integer; stdcall;
  external 'DNSAPI.dll' name 'DnsExtractRecordsFromMessage_W';

result := DllCall("DNSAPI\DnsExtractRecordsFromMessage_W"
    , "Ptr", pDnsBuffer   ; DNS_MESSAGE_BUFFER*
    , "UShort", wMessageLength   ; WORD
    , "Ptr", ppRecord   ; DNS_RECORDA** out
    , "Int")   ; return: INT

●DnsExtractRecordsFromMessage_W(pDnsBuffer, wMessageLength, ppRecord) = DLL("DNSAPI.dll", "int DnsExtractRecordsFromMessage_W(void*, int, void*)")
# 呼び出し: DnsExtractRecordsFromMessage_W(pDnsBuffer, wMessageLength, ppRecord)
# pDnsBuffer : DNS_MESSAGE_BUFFER* -> "void*"
# wMessageLength : WORD -> "int"
# ppRecord : DNS_RECORDA** 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)。