ホーム › NetworkManagement.IpHelper › GetDnsSettings

GetDnsSettings

関数

システム全体のDNS設定を取得する。

DLLIPHLPAPI.dll呼出規約winapi

シグネチャ

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

WIN32_ERROR GetDnsSettings(
    DNS_SETTINGS* Settings
);

パラメーター

名前	型	方向
Settings	DNS_SETTINGS*	inout

戻り値の型: WIN32_ERROR

各言語での呼び出し定義

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

WIN32_ERROR GetDnsSettings(
    DNS_SETTINGS* Settings
);

[DllImport("IPHLPAPI.dll", ExactSpelling = true)]
static extern uint GetDnsSettings(
    IntPtr Settings   // DNS_SETTINGS* in/out
);

<DllImport("IPHLPAPI.dll", ExactSpelling:=True)>
Public Shared Function GetDnsSettings(
    Settings As IntPtr   ' DNS_SETTINGS* in/out
) As UInteger
End Function

' Settings : DNS_SETTINGS* in/out
Declare PtrSafe Function GetDnsSettings Lib "iphlpapi" ( _
    ByVal Settings 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

GetDnsSettings = ctypes.windll.iphlpapi.GetDnsSettings
GetDnsSettings.restype = wintypes.DWORD
GetDnsSettings.argtypes = [
    ctypes.c_void_p,  # Settings : DNS_SETTINGS* in/out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('IPHLPAPI.dll')
GetDnsSettings = Fiddle::Function.new(
  lib['GetDnsSettings'],
  [
    Fiddle::TYPE_VOIDP,  # Settings : DNS_SETTINGS* in/out
  ],
  -Fiddle::TYPE_INT)

#[link(name = "iphlpapi")]
extern "system" {
    fn GetDnsSettings(
        Settings: *mut DNS_SETTINGS  // DNS_SETTINGS* in/out
    ) -> u32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("IPHLPAPI.dll")]
public static extern uint GetDnsSettings(IntPtr Settings);
"@
$api = Add-Type -MemberDefinition $sig -Name 'IPHLPAPI_GetDnsSettings' -Namespace Win32 -PassThru
# $api::GetDnsSettings(Settings)

#uselib "IPHLPAPI.dll"
#func global GetDnsSettings "GetDnsSettings" sptr
; GetDnsSettings varptr(Settings)   ; 戻り値は stat
; Settings : DNS_SETTINGS* 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 "IPHLPAPI.dll"
#cfunc global GetDnsSettings "GetDnsSettings" var
; res = GetDnsSettings(Settings)
; Settings : DNS_SETTINGS* 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。#uselib "IPHLPAPI.dll"
#cfunc global GetDnsSettings "GetDnsSettings" sptr
; res = GetDnsSettings(varptr(Settings))
; Settings : DNS_SETTINGS* in/out -> "sptr"
; ※出力/バッファ引数はポインタ方式(token=sptr / 呼び出しは varptr(変数))。

出力引数:

; WIN32_ERROR GetDnsSettings(DNS_SETTINGS* Settings)
#uselib "IPHLPAPI.dll"
#cfunc global GetDnsSettings "GetDnsSettings" var
; res = GetDnsSettings(Settings)
; Settings : DNS_SETTINGS* 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。; WIN32_ERROR GetDnsSettings(DNS_SETTINGS* Settings)
#uselib "IPHLPAPI.dll"
#cfunc global GetDnsSettings "GetDnsSettings" intptr
; res = GetDnsSettings(varptr(Settings))
; Settings : DNS_SETTINGS* in/out -> "intptr"
; ※出力/バッファ引数はポインタ方式(token=intptr / 呼び出しは varptr(変数))。

import (
	"golang.org/x/sys/windows"
	"unsafe"
)

var (
	iphlpapi = windows.NewLazySystemDLL("IPHLPAPI.dll")
	procGetDnsSettings = iphlpapi.NewProc("GetDnsSettings")
)

// Settings (DNS_SETTINGS* in/out)
r1, _, err := procGetDnsSettings.Call(
	uintptr(Settings),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // WIN32_ERROR

function GetDnsSettings(
  Settings: Pointer   // DNS_SETTINGS* in/out
): DWORD; stdcall;
  external 'IPHLPAPI.dll' name 'GetDnsSettings';

result := DllCall("IPHLPAPI\GetDnsSettings"
    , "Ptr", Settings   ; DNS_SETTINGS* in/out
    , "UInt")   ; return: WIN32_ERROR

●GetDnsSettings(Settings) = DLL("IPHLPAPI.dll", "dword GetDnsSettings(void*)")
# 呼び出し: GetDnsSettings(Settings)
# Settings : DNS_SETTINGS* 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)。