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DnsSetApplicationSettings

関数
アプリケーション用のDNS設定とカスタムサーバーを設定する。
DLLDNSAPI.dll呼出規約winapi
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シグネチャ

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

DWORD DnsSetApplicationSettings(
    DWORD cServers,
    const DNS_CUSTOM_SERVER* pServers,
    const DNS_APPLICATION_SETTINGS* pSettings   // optional
);

パラメーター

名前型方向説明
cServersDWORDin設定するカスタムDNSサーバー配列の要素数。
pServersDNS_CUSTOM_SERVER*in設定するDNS_CUSTOM_SERVER配列へのポインタ。
pSettingsDNS_APPLICATION_SETTINGS*inoptional適用するアプリ固有のDNS設定を格納したDNS_APPLICATION_SETTINGS構造体へのポインタ。

戻り値の型: DWORD

各言語での呼び出し定義

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

DWORD DnsSetApplicationSettings(
    DWORD cServers,
    const DNS_CUSTOM_SERVER* pServers,
    const DNS_APPLICATION_SETTINGS* pSettings   // optional
);
[DllImport("DNSAPI.dll", ExactSpelling = true)]
static extern uint DnsSetApplicationSettings(
    uint cServers,   // DWORD
    IntPtr pServers,   // DNS_CUSTOM_SERVER*
    IntPtr pSettings   // DNS_APPLICATION_SETTINGS* optional
);
<DllImport("DNSAPI.dll", ExactSpelling:=True)>
Public Shared Function DnsSetApplicationSettings(
    cServers As UInteger,   ' DWORD
    pServers As IntPtr,   ' DNS_CUSTOM_SERVER*
    pSettings As IntPtr   ' DNS_APPLICATION_SETTINGS* optional
) As UInteger
End Function
' cServers : DWORD
' pServers : DNS_CUSTOM_SERVER*
' pSettings : DNS_APPLICATION_SETTINGS* optional
Declare PtrSafe Function DnsSetApplicationSettings Lib "dnsapi" ( _
    ByVal cServers As Long, _
    ByVal pServers As LongPtr, _
    ByVal pSettings 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

DnsSetApplicationSettings = ctypes.windll.dnsapi.DnsSetApplicationSettings
DnsSetApplicationSettings.restype = wintypes.DWORD
DnsSetApplicationSettings.argtypes = [
    wintypes.DWORD,  # cServers : DWORD
    ctypes.c_void_p,  # pServers : DNS_CUSTOM_SERVER*
    ctypes.c_void_p,  # pSettings : DNS_APPLICATION_SETTINGS* optional
]
require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('DNSAPI.dll')
DnsSetApplicationSettings = Fiddle::Function.new(
  lib['DnsSetApplicationSettings'],
  [
    -Fiddle::TYPE_INT,  # cServers : DWORD
    Fiddle::TYPE_VOIDP,  # pServers : DNS_CUSTOM_SERVER*
    Fiddle::TYPE_VOIDP,  # pSettings : DNS_APPLICATION_SETTINGS* optional
  ],
  -Fiddle::TYPE_INT)
#[link(name = "dnsapi")]
extern "system" {
    fn DnsSetApplicationSettings(
        cServers: u32,  // DWORD
        pServers: *const DNS_CUSTOM_SERVER,  // DNS_CUSTOM_SERVER*
        pSettings: *const DNS_APPLICATION_SETTINGS  // DNS_APPLICATION_SETTINGS* optional
    ) -> u32;
}
// crates: windows-sys provides ready-made bindings for this API.
$sig = @"
[DllImport("DNSAPI.dll")]
public static extern uint DnsSetApplicationSettings(uint cServers, IntPtr pServers, IntPtr pSettings);
"@
$api = Add-Type -MemberDefinition $sig -Name 'DNSAPI_DnsSetApplicationSettings' -Namespace Win32 -PassThru
# $api::DnsSetApplicationSettings(cServers, pServers, pSettings)
#uselib "DNSAPI.dll"
#func global DnsSetApplicationSettings "DnsSetApplicationSettings" sptr, sptr, sptr
; DnsSetApplicationSettings cServers, varptr(pServers), varptr(pSettings)   ; 戻り値は stat
; cServers : DWORD -> "sptr"
; pServers : DNS_CUSTOM_SERVER* -> "sptr"
; pSettings : DNS_APPLICATION_SETTINGS* optional -> "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 DnsSetApplicationSettings "DnsSetApplicationSettings" int, var, var
; res = DnsSetApplicationSettings(cServers, pServers, pSettings)
; cServers : DWORD -> "int"
; pServers : DNS_CUSTOM_SERVER* -> "var"
; pSettings : DNS_APPLICATION_SETTINGS* optional -> "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: 
; DWORD DnsSetApplicationSettings(DWORD cServers, DNS_CUSTOM_SERVER* pServers, DNS_APPLICATION_SETTINGS* pSettings)
#uselib "DNSAPI.dll"
#cfunc global DnsSetApplicationSettings "DnsSetApplicationSettings" int, var, var
; res = DnsSetApplicationSettings(cServers, pServers, pSettings)
; cServers : DWORD -> "int"
; pServers : DNS_CUSTOM_SERVER* -> "var"
; pSettings : DNS_APPLICATION_SETTINGS* optional -> "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")
	procDnsSetApplicationSettings = dnsapi.NewProc("DnsSetApplicationSettings")
)

// cServers (DWORD), pServers (DNS_CUSTOM_SERVER*), pSettings (DNS_APPLICATION_SETTINGS* optional)
r1, _, err := procDnsSetApplicationSettings.Call(
	uintptr(cServers),
	uintptr(pServers),
	uintptr(pSettings),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // DWORD
function DnsSetApplicationSettings(
  cServers: DWORD;   // DWORD
  pServers: Pointer;   // DNS_CUSTOM_SERVER*
  pSettings: Pointer   // DNS_APPLICATION_SETTINGS* optional
): DWORD; stdcall;
  external 'DNSAPI.dll' name 'DnsSetApplicationSettings';
result := DllCall("DNSAPI\DnsSetApplicationSettings"
    , "UInt", cServers   ; DWORD
    , "Ptr", pServers   ; DNS_CUSTOM_SERVER*
    , "Ptr", pSettings   ; DNS_APPLICATION_SETTINGS* optional
    , "UInt")   ; return: DWORD
●DnsSetApplicationSettings(cServers, pServers, pSettings) = DLL("DNSAPI.dll", "dword DnsSetApplicationSettings(dword, void*, void*)")
# 呼び出し: DnsSetApplicationSettings(cServers, pServers, pSettings)
# cServers : DWORD -> "dword"
# pServers : DNS_CUSTOM_SERVER* -> "void*"
# pSettings : DNS_APPLICATION_SETTINGS* optional -> "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 DnsSetApplicationSettings(
    cServers: u32, // DWORD
    pServers: [*c]DNS_CUSTOM_SERVER, // DNS_CUSTOM_SERVER*
    pSettings: [*c]DNS_APPLICATION_SETTINGS // DNS_APPLICATION_SETTINGS* optional
) callconv(std.os.windows.WINAPI) u32;
proc DnsSetApplicationSettings(
    cServers: uint32,  # DWORD
    pServers: ptr DNS_CUSTOM_SERVER,  # DNS_CUSTOM_SERVER*
    pSettings: ptr DNS_APPLICATION_SETTINGS  # DNS_APPLICATION_SETTINGS* optional
): uint32 {.importc: "DnsSetApplicationSettings", stdcall, dynlib: "DNSAPI.dll".}
pragma(lib, "dnsapi");
extern(Windows)
uint DnsSetApplicationSettings(
    uint cServers,   // DWORD
    DNS_CUSTOM_SERVER* pServers,   // DNS_CUSTOM_SERVER*
    DNS_APPLICATION_SETTINGS* pSettings   // DNS_APPLICATION_SETTINGS* optional
);
ccall((:DnsSetApplicationSettings, "DNSAPI.dll"), stdcall, UInt32,
      (UInt32, Ptr{DNS_CUSTOM_SERVER}, Ptr{DNS_APPLICATION_SETTINGS}),
      cServers, pServers, pSettings)
# cServers : DWORD -> UInt32
# pServers : DNS_CUSTOM_SERVER* -> Ptr{DNS_CUSTOM_SERVER}
# pSettings : DNS_APPLICATION_SETTINGS* optional -> Ptr{DNS_APPLICATION_SETTINGS}
# stdcall は 32bit のみ意味を持つ(x64 では無視)。
local ffi = require("ffi")
ffi.cdef[[
uint32_t DnsSetApplicationSettings(
    uint32_t cServers,
    void* pServers,
    void* pSettings);
]]
local dnsapi = ffi.load("dnsapi")
-- dnsapi.DnsSetApplicationSettings(cServers, pServers, pSettings)
-- cServers : DWORD
-- pServers : DNS_CUSTOM_SERVER*
-- pSettings : DNS_APPLICATION_SETTINGS* optional
-- 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 DnsSetApplicationSettings = lib.func('__stdcall', 'DnsSetApplicationSettings', 'uint32_t', ['uint32_t', 'void *', 'void *']);
// DnsSetApplicationSettings(cServers, pServers, pSettings)
// cServers : DWORD -> 'uint32_t'
// pServers : DNS_CUSTOM_SERVER* -> 'void *'
// pSettings : DNS_APPLICATION_SETTINGS* optional -> '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", {
  DnsSetApplicationSettings: { parameters: ["u32", "pointer", "pointer"], result: "u32" },
});
// lib.symbols.DnsSetApplicationSettings(cServers, pServers, pSettings)
// cServers : DWORD -> "u32"
// pServers : DNS_CUSTOM_SERVER* -> "pointer"
// pSettings : DNS_APPLICATION_SETTINGS* optional -> "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
uint32_t DnsSetApplicationSettings(
    uint32_t cServers,
    void* pServers,
    void* pSettings);
C, "DNSAPI.dll");
// $ffi->DnsSetApplicationSettings(cServers, pServers, pSettings);
// cServers : DWORD
// pServers : DNS_CUSTOM_SERVER*
// pSettings : DNS_APPLICATION_SETTINGS* optional
// 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 DnsSetApplicationSettings(
        int cServers,   // DWORD
        Pointer pServers,   // DNS_CUSTOM_SERVER*
        Pointer pSettings   // DNS_APPLICATION_SETTINGS* optional
    );
}
@[Link("dnsapi")]
lib LibDNSAPI
  fun DnsSetApplicationSettings = DnsSetApplicationSettings(
    cServers : UInt32,   # DWORD
    pServers : DNS_CUSTOM_SERVER*,   # DNS_CUSTOM_SERVER*
    pSettings : DNS_APPLICATION_SETTINGS*   # DNS_APPLICATION_SETTINGS* optional
  ) : UInt32
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 DnsSetApplicationSettingsNative = Uint32 Function(Uint32, Pointer<Void>, Pointer<Void>);
typedef DnsSetApplicationSettingsDart = int Function(int, Pointer<Void>, Pointer<Void>);
final DnsSetApplicationSettings = DynamicLibrary.open('DNSAPI.dll')
    .lookupFunction<DnsSetApplicationSettingsNative, DnsSetApplicationSettingsDart>('DnsSetApplicationSettings');
// cServers : DWORD -> Uint32
// pServers : DNS_CUSTOM_SERVER* -> Pointer<Void>
// pSettings : DNS_APPLICATION_SETTINGS* optional -> Pointer<Void>
// 文字列は package:ffi の "...".toNativeUtf16()/toNativeUtf8() で変換。
{$mode objfpc}{$H+}
function DnsSetApplicationSettings(
  cServers: DWORD;   // DWORD
  pServers: Pointer;   // DNS_CUSTOM_SERVER*
  pSettings: Pointer   // DNS_APPLICATION_SETTINGS* optional
): DWORD; stdcall;
  external 'DNSAPI.dll' name 'DnsSetApplicationSettings';
import Foreign
import Foreign.C.Types
import Foreign.C.String

foreign import stdcall safe "DnsSetApplicationSettings"
  c_DnsSetApplicationSettings :: Word32 -> Ptr () -> Ptr () -> IO Word32
-- cServers : DWORD -> Word32
-- pServers : DNS_CUSTOM_SERVER* -> Ptr ()
-- pSettings : DNS_APPLICATION_SETTINGS* optional -> 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 dnssetapplicationsettings =
  foreign "DnsSetApplicationSettings"
    (uint32_t @-> (ptr void) @-> (ptr void) @-> returning uint32_t)
(* cServers : DWORD -> uint32_t *)
(* pServers : DNS_CUSTOM_SERVER* -> (ptr void) *)
(* pSettings : DNS_APPLICATION_SETTINGS* optional -> (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 ("DnsSetApplicationSettings" dns-set-application-settings :convention :stdcall) :uint32
  (c-servers :uint32)   ; DWORD
  (p-servers :pointer)   ; DNS_CUSTOM_SERVER*
  (p-settings :pointer))   ; DNS_APPLICATION_SETTINGS* optional
; isize/usize(INT_PTR/SIZE_T)は x64 前提で :int64/:uint64。x86 では :int32/:uint32。
use Win32::API;
my $DnsSetApplicationSettings = Win32::API::More->new('DNSAPI',
    'DWORD DnsSetApplicationSettings(DWORD cServers, LPVOID pServers, LPVOID pSettings)');
# my $ret = $DnsSetApplicationSettings->Call($cServers, $pServers, $pSettings);
# cServers : DWORD -> DWORD
# pServers : DNS_CUSTOM_SERVER* -> LPVOID
# pSettings : DNS_APPLICATION_SETTINGS* optional -> LPVOID
# 値渡し構造体は pack() した文字列、または Win32::API::Struct を使用。

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