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

DnsServiceResolve

関数
DNS-SDサービスインスタンスの接続情報を解決する。
DLLDNSAPI.dll呼出規約winapiSetLastErrorあり対応OSWindows 10 以降

シグネチャ

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

INT DnsServiceResolve(
    DNS_SERVICE_RESOLVE_REQUEST* pRequest,
    DNS_SERVICE_CANCEL* pCancel
);

パラメーター

名前方向説明
pRequestDNS_SERVICE_RESOLVE_REQUEST*in解決するサービスインスタンス名やコールバック等を格納したDNS_SERVICE_RESOLVE_REQUEST構造体へのポインタ。
pCancelDNS_SERVICE_CANCEL*inout解決操作のキャンセルに用いるDNS_SERVICE_CANCELハンドルを受け取るポインタ。

戻り値の型: INT

各言語での呼び出し定義

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

INT DnsServiceResolve(
    DNS_SERVICE_RESOLVE_REQUEST* pRequest,
    DNS_SERVICE_CANCEL* pCancel
);
[DllImport("DNSAPI.dll", SetLastError = true, ExactSpelling = true)]
static extern int DnsServiceResolve(
    IntPtr pRequest,   // DNS_SERVICE_RESOLVE_REQUEST*
    IntPtr pCancel   // DNS_SERVICE_CANCEL* in/out
);
<DllImport("DNSAPI.dll", SetLastError:=True, ExactSpelling:=True)>
Public Shared Function DnsServiceResolve(
    pRequest As IntPtr,   ' DNS_SERVICE_RESOLVE_REQUEST*
    pCancel As IntPtr   ' DNS_SERVICE_CANCEL* in/out
) As Integer
End Function
' pRequest : DNS_SERVICE_RESOLVE_REQUEST*
' pCancel : DNS_SERVICE_CANCEL* in/out
Declare PtrSafe Function DnsServiceResolve Lib "dnsapi" ( _
    ByVal pRequest As LongPtr, _
    ByVal pCancel 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

DnsServiceResolve = ctypes.windll.dnsapi.DnsServiceResolve
DnsServiceResolve.restype = ctypes.c_int
DnsServiceResolve.argtypes = [
    ctypes.c_void_p,  # pRequest : DNS_SERVICE_RESOLVE_REQUEST*
    ctypes.c_void_p,  # pCancel : DNS_SERVICE_CANCEL* in/out
]
# GetLastError: use ctypes.GetLastError() (or ctypes.WinDLL(use_last_error=True))
require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('DNSAPI.dll')
DnsServiceResolve = Fiddle::Function.new(
  lib['DnsServiceResolve'],
  [
    Fiddle::TYPE_VOIDP,  # pRequest : DNS_SERVICE_RESOLVE_REQUEST*
    Fiddle::TYPE_VOIDP,  # pCancel : DNS_SERVICE_CANCEL* in/out
  ],
  Fiddle::TYPE_INT)
#[link(name = "dnsapi")]
extern "system" {
    fn DnsServiceResolve(
        pRequest: *mut DNS_SERVICE_RESOLVE_REQUEST,  // DNS_SERVICE_RESOLVE_REQUEST*
        pCancel: *mut DNS_SERVICE_CANCEL  // DNS_SERVICE_CANCEL* in/out
    ) -> i32;
}
// crates: windows-sys provides ready-made bindings for this API.
$sig = @"
[DllImport("DNSAPI.dll", SetLastError = true)]
public static extern int DnsServiceResolve(IntPtr pRequest, IntPtr pCancel);
"@
$api = Add-Type -MemberDefinition $sig -Name 'DNSAPI_DnsServiceResolve' -Namespace Win32 -PassThru
# $api::DnsServiceResolve(pRequest, pCancel)
#uselib "DNSAPI.dll"
#func global DnsServiceResolve "DnsServiceResolve" sptr, sptr
; DnsServiceResolve varptr(pRequest), varptr(pCancel)   ; 戻り値は stat
; pRequest : DNS_SERVICE_RESOLVE_REQUEST* -> "sptr"
; pCancel : DNS_SERVICE_CANCEL* 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。
出力引数:
#uselib "DNSAPI.dll"
#cfunc global DnsServiceResolve "DnsServiceResolve" var, var
; res = DnsServiceResolve(pRequest, pCancel)
; pRequest : DNS_SERVICE_RESOLVE_REQUEST* -> "var"
; pCancel : DNS_SERVICE_CANCEL* in/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。
出力引数:
; INT DnsServiceResolve(DNS_SERVICE_RESOLVE_REQUEST* pRequest, DNS_SERVICE_CANCEL* pCancel)
#uselib "DNSAPI.dll"
#cfunc global DnsServiceResolve "DnsServiceResolve" var, var
; res = DnsServiceResolve(pRequest, pCancel)
; pRequest : DNS_SERVICE_RESOLVE_REQUEST* -> "var"
; pCancel : DNS_SERVICE_CANCEL* in/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")
	procDnsServiceResolve = dnsapi.NewProc("DnsServiceResolve")
)

// pRequest (DNS_SERVICE_RESOLVE_REQUEST*), pCancel (DNS_SERVICE_CANCEL* in/out)
r1, _, err := procDnsServiceResolve.Call(
	uintptr(pRequest),
	uintptr(pCancel),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // INT
function DnsServiceResolve(
  pRequest: Pointer;   // DNS_SERVICE_RESOLVE_REQUEST*
  pCancel: Pointer   // DNS_SERVICE_CANCEL* in/out
): Integer; stdcall;
  external 'DNSAPI.dll' name 'DnsServiceResolve';
result := DllCall("DNSAPI\DnsServiceResolve"
    , "Ptr", pRequest   ; DNS_SERVICE_RESOLVE_REQUEST*
    , "Ptr", pCancel   ; DNS_SERVICE_CANCEL* in/out
    , "Int")   ; return: INT
●DnsServiceResolve(pRequest, pCancel) = DLL("DNSAPI.dll", "int DnsServiceResolve(void*, void*)")
# 呼び出し: DnsServiceResolve(pRequest, pCancel)
# pRequest : DNS_SERVICE_RESOLVE_REQUEST* -> "void*"
# pCancel : DNS_SERVICE_CANCEL* 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)。
const std = @import("std");

extern "dnsapi" fn DnsServiceResolve(
    pRequest: [*c]DNS_SERVICE_RESOLVE_REQUEST, // DNS_SERVICE_RESOLVE_REQUEST*
    pCancel: [*c]DNS_SERVICE_CANCEL // DNS_SERVICE_CANCEL* in/out
) callconv(std.os.windows.WINAPI) i32;
proc DnsServiceResolve(
    pRequest: ptr DNS_SERVICE_RESOLVE_REQUEST,  # DNS_SERVICE_RESOLVE_REQUEST*
    pCancel: ptr DNS_SERVICE_CANCEL  # DNS_SERVICE_CANCEL* in/out
): int32 {.importc: "DnsServiceResolve", stdcall, dynlib: "DNSAPI.dll".}
pragma(lib, "dnsapi");
extern(Windows)
int DnsServiceResolve(
    DNS_SERVICE_RESOLVE_REQUEST* pRequest,   // DNS_SERVICE_RESOLVE_REQUEST*
    DNS_SERVICE_CANCEL* pCancel   // DNS_SERVICE_CANCEL* in/out
);
ccall((:DnsServiceResolve, "DNSAPI.dll"), stdcall, Int32,
      (Ptr{DNS_SERVICE_RESOLVE_REQUEST}, Ptr{DNS_SERVICE_CANCEL}),
      pRequest, pCancel)
# pRequest : DNS_SERVICE_RESOLVE_REQUEST* -> Ptr{DNS_SERVICE_RESOLVE_REQUEST}
# pCancel : DNS_SERVICE_CANCEL* in/out -> Ptr{DNS_SERVICE_CANCEL}
# stdcall は 32bit のみ意味を持つ(x64 では無視)。
local ffi = require("ffi")
ffi.cdef[[
int32_t DnsServiceResolve(
    void* pRequest,
    void* pCancel);
]]
local dnsapi = ffi.load("dnsapi")
-- dnsapi.DnsServiceResolve(pRequest, pCancel)
-- pRequest : DNS_SERVICE_RESOLVE_REQUEST*
-- pCancel : DNS_SERVICE_CANCEL* in/out
-- 構造体/GUIDへのポインタは cdef が通るよう void* で表記(実型は各引数コメント参照)。値渡し構造体・enum は対応する typedef を cdef に追加すること。
const koffi = require('koffi');
const lib = koffi.load('DNSAPI.dll');
const DnsServiceResolve = lib.func('__stdcall', 'DnsServiceResolve', 'int32_t', ['void *', 'void *']);
// DnsServiceResolve(pRequest, pCancel)
// pRequest : DNS_SERVICE_RESOLVE_REQUEST* -> 'void *'
// pCancel : DNS_SERVICE_CANCEL* in/out -> 'void *'
// 出力ポインタは koffi.out(...) で包む。構造体は koffi.struct で定義。
const lib = Deno.dlopen("DNSAPI.dll", {
  DnsServiceResolve: { parameters: ["pointer", "pointer"], result: "i32" },
});
// lib.symbols.DnsServiceResolve(pRequest, pCancel)
// pRequest : DNS_SERVICE_RESOLVE_REQUEST* -> "pointer"
// pCancel : DNS_SERVICE_CANCEL* in/out -> "pointer"
// 文字列引数は "buffer"(NUL 終端のバイト列を Uint8Array で渡す)。
// 値渡し構造体は { struct: [ ...field types... ] } を使用。
<?php
$ffi = FFI::cdef(<<<C
int32_t DnsServiceResolve(
    void* pRequest,
    void* pCancel);
C, "DNSAPI.dll");
// $ffi->DnsServiceResolve(pRequest, pCancel);
// pRequest : DNS_SERVICE_RESOLVE_REQUEST*
// pCancel : DNS_SERVICE_CANCEL* in/out
// 構造体/GUIDへのポインタは cdef が通るよう void* で表記(実型は各引数コメント参照)。値渡し構造体・enum は対応する typedef を cdef に追加すること。
// WINAPI(stdcall): x64 では呼出規約が統一されるため問題なし。x86 では __stdcall 対応のラッパが必要な場合あり。
import com.sun.jna.*;
import com.sun.jna.ptr.*;
import com.sun.jna.win32.StdCallLibrary;
import com.sun.jna.win32.W32APIOptions;

public interface Dnsapi extends StdCallLibrary {
    Dnsapi INSTANCE = Native.load("dnsapi", Dnsapi.class);
    int DnsServiceResolve(
        Pointer pRequest,   // DNS_SERVICE_RESOLVE_REQUEST*
        Pointer pCancel   // DNS_SERVICE_CANCEL* in/out
    );
}
@[Link("dnsapi")]
lib LibDNSAPI
  fun DnsServiceResolve = DnsServiceResolve(
    pRequest : DNS_SERVICE_RESOLVE_REQUEST*,   # DNS_SERVICE_RESOLVE_REQUEST*
    pCancel : DNS_SERVICE_CANCEL*   # DNS_SERVICE_CANCEL* in/out
  ) : Int32
end
# 構造体/GUID/enum は lib 内に対応する型定義が必要。
# 呼出規約: x64 は規約統一のため OK。x86(32bit)は WINAPI=stdcall だが Crystal の fun に stdcall 付与構文がなく非対応。
import 'dart:ffi';
import 'package:ffi/ffi.dart';

typedef DnsServiceResolveNative = Int32 Function(Pointer<Void>, Pointer<Void>);
typedef DnsServiceResolveDart = int Function(Pointer<Void>, Pointer<Void>);
final DnsServiceResolve = DynamicLibrary.open('DNSAPI.dll')
    .lookupFunction<DnsServiceResolveNative, DnsServiceResolveDart>('DnsServiceResolve');
// pRequest : DNS_SERVICE_RESOLVE_REQUEST* -> Pointer<Void>
// pCancel : DNS_SERVICE_CANCEL* in/out -> Pointer<Void>
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。
{$mode objfpc}{$H+}
function DnsServiceResolve(
  pRequest: Pointer;   // DNS_SERVICE_RESOLVE_REQUEST*
  pCancel: Pointer   // DNS_SERVICE_CANCEL* in/out
): Integer; stdcall;
  external 'DNSAPI.dll' name 'DnsServiceResolve';
import Foreign
import Foreign.C.Types
import Foreign.C.String

foreign import stdcall safe "DnsServiceResolve"
  c_DnsServiceResolve :: Ptr () -> Ptr () -> IO Int32
-- pRequest : DNS_SERVICE_RESOLVE_REQUEST* -> Ptr ()
-- pCancel : DNS_SERVICE_CANCEL* in/out -> Ptr ()
-- 要 GHC(Windows)。stdcall は x64 では ccall として扱われる。ブロックする API は safe 呼び出し推奨。
open Ctypes
open Foreign

let dnsserviceresolve =
  foreign "DnsServiceResolve"
    ((ptr void) @-> (ptr void) @-> returning int32_t)
(* pRequest : DNS_SERVICE_RESOLVE_REQUEST* -> (ptr void) *)
(* pCancel : DNS_SERVICE_CANCEL* in/out -> (ptr void) *)
(* foreign は cdecl 前提。x64 Windows では WINAPI と一致。構造体は ctypes structure を定義のこと。 *)
(cffi:define-foreign-library dnsapi (t "DNSAPI.dll"))
(cffi:use-foreign-library dnsapi)

(cffi:defcfun ("DnsServiceResolve" dns-service-resolve :convention :stdcall) :int32
  (p-request :pointer)   ; DNS_SERVICE_RESOLVE_REQUEST*
  (p-cancel :pointer))   ; DNS_SERVICE_CANCEL* in/out
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。
use Win32::API;
my $DnsServiceResolve = Win32::API::More->new('DNSAPI',
    'int DnsServiceResolve(LPVOID pRequest, LPVOID pCancel)');
# my $ret = $DnsServiceResolve->Call($pRequest, $pCancel);
# pRequest : DNS_SERVICE_RESOLVE_REQUEST* -> LPVOID
# pCancel : DNS_SERVICE_CANCEL* in/out -> LPVOID
# 値渡し構造体は pack() した文字列、または Win32::API::Struct を使用。

関連項目

使用する型