Win32 API 日本語リファレンス
ホームNetworkManagement.Dns › DnsQuery_UTF8

DnsQuery_UTF8

関数
UTF-8文字列名でDNS問い合わせを実行しレコードを取得する。
DLLDNSAPI.dll呼出規約winapi対応OSWindows 2000 以降

シグネチャ

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

WIN32_ERROR DnsQuery_UTF8(
    LPCSTR pszName,
    WORD wType,
    DNS_QUERY_OPTIONS Options,
    void* pExtra,   // optional
    DNS_RECORDA** ppQueryResults,
    void** pReserved   // optional
);

パラメーター

名前方向
pszNameLPCSTRin
wTypeWORDin
OptionsDNS_QUERY_OPTIONSin
pExtravoid*inoutoptional
ppQueryResultsDNS_RECORDA**out
pReservedvoid**outoptional

戻り値の型: WIN32_ERROR

各言語での呼び出し定義

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

WIN32_ERROR DnsQuery_UTF8(
    LPCSTR pszName,
    WORD wType,
    DNS_QUERY_OPTIONS Options,
    void* pExtra,   // optional
    DNS_RECORDA** ppQueryResults,
    void** pReserved   // optional
);
[DllImport("DNSAPI.dll", ExactSpelling = true)]
static extern uint DnsQuery_UTF8(
    [MarshalAs(UnmanagedType.LPStr)] string pszName,   // LPCSTR
    ushort wType,   // WORD
    uint Options,   // DNS_QUERY_OPTIONS
    IntPtr pExtra,   // void* optional, in/out
    IntPtr ppQueryResults,   // DNS_RECORDA** out
    IntPtr pReserved   // void** optional, out
);
<DllImport("DNSAPI.dll", ExactSpelling:=True)>
Public Shared Function DnsQuery_UTF8(
    <MarshalAs(UnmanagedType.LPStr)> pszName As String,   ' LPCSTR
    wType As UShort,   ' WORD
    Options As UInteger,   ' DNS_QUERY_OPTIONS
    pExtra As IntPtr,   ' void* optional, in/out
    ppQueryResults As IntPtr,   ' DNS_RECORDA** out
    pReserved As IntPtr   ' void** optional, out
) As UInteger
End Function
' pszName : LPCSTR
' wType : WORD
' Options : DNS_QUERY_OPTIONS
' pExtra : void* optional, in/out
' ppQueryResults : DNS_RECORDA** out
' pReserved : void** optional, out
Declare PtrSafe Function DnsQuery_UTF8 Lib "dnsapi" ( _
    ByVal pszName As String, _
    ByVal wType As Integer, _
    ByVal Options As Long, _
    ByVal pExtra As LongPtr, _
    ByVal ppQueryResults As LongPtr, _
    ByVal pReserved 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

DnsQuery_UTF8 = ctypes.windll.dnsapi.DnsQuery_UTF8
DnsQuery_UTF8.restype = wintypes.DWORD
DnsQuery_UTF8.argtypes = [
    wintypes.LPCSTR,  # pszName : LPCSTR
    ctypes.c_ushort,  # wType : WORD
    wintypes.DWORD,  # Options : DNS_QUERY_OPTIONS
    ctypes.POINTER(None),  # pExtra : void* optional, in/out
    ctypes.c_void_p,  # ppQueryResults : DNS_RECORDA** out
    ctypes.c_void_p,  # pReserved : void** optional, out
]
require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('DNSAPI.dll')
DnsQuery_UTF8 = Fiddle::Function.new(
  lib['DnsQuery_UTF8'],
  [
    Fiddle::TYPE_VOIDP,  # pszName : LPCSTR
    -Fiddle::TYPE_SHORT,  # wType : WORD
    -Fiddle::TYPE_INT,  # Options : DNS_QUERY_OPTIONS
    Fiddle::TYPE_VOIDP,  # pExtra : void* optional, in/out
    Fiddle::TYPE_VOIDP,  # ppQueryResults : DNS_RECORDA** out
    Fiddle::TYPE_VOIDP,  # pReserved : void** optional, out
  ],
  -Fiddle::TYPE_INT)
#[link(name = "dnsapi")]
extern "system" {
    fn DnsQuery_UTF8(
        pszName: *const u8,  // LPCSTR
        wType: u16,  // WORD
        Options: u32,  // DNS_QUERY_OPTIONS
        pExtra: *mut (),  // void* optional, in/out
        ppQueryResults: *mut *mut DNS_RECORDA,  // DNS_RECORDA** out
        pReserved: *mut *mut ()  // void** optional, out
    ) -> u32;
}
// crates: windows-sys provides ready-made bindings for this API.
$sig = @"
[DllImport("DNSAPI.dll")]
public static extern uint DnsQuery_UTF8([MarshalAs(UnmanagedType.LPStr)] string pszName, ushort wType, uint Options, IntPtr pExtra, IntPtr ppQueryResults, IntPtr pReserved);
"@
$api = Add-Type -MemberDefinition $sig -Name 'DNSAPI_DnsQuery_UTF8' -Namespace Win32 -PassThru
# $api::DnsQuery_UTF8(pszName, wType, Options, pExtra, ppQueryResults, pReserved)
#uselib "DNSAPI.dll"
#func global DnsQuery_UTF8 "DnsQuery_UTF8" sptr, sptr, sptr, sptr, sptr, sptr
; DnsQuery_UTF8 pszName, wType, Options, pExtra, varptr(ppQueryResults), pReserved   ; 戻り値は stat
; pszName : LPCSTR -> "sptr"
; wType : WORD -> "sptr"
; Options : DNS_QUERY_OPTIONS -> "sptr"
; pExtra : void* optional, in/out -> "sptr"
; ppQueryResults : DNS_RECORDA** out -> "sptr"
; pReserved : void** 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。
出力引数:
#uselib "DNSAPI.dll"
#cfunc global DnsQuery_UTF8 "DnsQuery_UTF8" str, int, int, sptr, var, sptr
; res = DnsQuery_UTF8(pszName, wType, Options, pExtra, ppQueryResults, pReserved)
; pszName : LPCSTR -> "str"
; wType : WORD -> "int"
; Options : DNS_QUERY_OPTIONS -> "int"
; pExtra : void* optional, in/out -> "sptr"
; ppQueryResults : DNS_RECORDA** out -> "var"
; pReserved : void** optional, out -> "sptr"
; ※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。
出力引数:
; WIN32_ERROR DnsQuery_UTF8(LPCSTR pszName, WORD wType, DNS_QUERY_OPTIONS Options, void* pExtra, DNS_RECORDA** ppQueryResults, void** pReserved)
#uselib "DNSAPI.dll"
#cfunc global DnsQuery_UTF8 "DnsQuery_UTF8" str, int, int, intptr, var, intptr
; res = DnsQuery_UTF8(pszName, wType, Options, pExtra, ppQueryResults, pReserved)
; pszName : LPCSTR -> "str"
; wType : WORD -> "int"
; Options : DNS_QUERY_OPTIONS -> "int"
; pExtra : void* optional, in/out -> "intptr"
; ppQueryResults : DNS_RECORDA** out -> "var"
; pReserved : void** optional, out -> "intptr"
; ※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")
	procDnsQuery_UTF8 = dnsapi.NewProc("DnsQuery_UTF8")
)

// pszName (LPCSTR), wType (WORD), Options (DNS_QUERY_OPTIONS), pExtra (void* optional, in/out), ppQueryResults (DNS_RECORDA** out), pReserved (void** optional, out)
r1, _, err := procDnsQuery_UTF8.Call(
	uintptr(unsafe.Pointer(windows.BytePtrFromString(pszName))),
	uintptr(wType),
	uintptr(Options),
	uintptr(pExtra),
	uintptr(ppQueryResults),
	uintptr(pReserved),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // WIN32_ERROR
function DnsQuery_UTF8(
  pszName: PAnsiChar;   // LPCSTR
  wType: Word;   // WORD
  Options: DWORD;   // DNS_QUERY_OPTIONS
  pExtra: Pointer;   // void* optional, in/out
  ppQueryResults: Pointer;   // DNS_RECORDA** out
  pReserved: Pointer   // void** optional, out
): DWORD; stdcall;
  external 'DNSAPI.dll' name 'DnsQuery_UTF8';
result := DllCall("DNSAPI\DnsQuery_UTF8"
    , "AStr", pszName   ; LPCSTR
    , "UShort", wType   ; WORD
    , "UInt", Options   ; DNS_QUERY_OPTIONS
    , "Ptr", pExtra   ; void* optional, in/out
    , "Ptr", ppQueryResults   ; DNS_RECORDA** out
    , "Ptr", pReserved   ; void** optional, out
    , "UInt")   ; return: WIN32_ERROR
●DnsQuery_UTF8(pszName, wType, Options, pExtra, ppQueryResults, pReserved) = DLL("DNSAPI.dll", "dword DnsQuery_UTF8(char*, int, dword, void*, void*, void*)")
# 呼び出し: DnsQuery_UTF8(pszName, wType, Options, pExtra, ppQueryResults, pReserved)
# pszName : LPCSTR -> "char*"
# wType : WORD -> "int"
# Options : DNS_QUERY_OPTIONS -> "dword"
# pExtra : void* optional, in/out -> "void*"
# ppQueryResults : DNS_RECORDA** out -> "void*"
# pReserved : void** 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)。