ホーム › NetworkManagement.Dhcp › DhcpGetMibInfo

DhcpGetMibInfo

関数

DHCPサーバーのMIB統計情報を取得する。

DLLDHCPSAPI.dll呼出規約winapi

シグネチャ

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

DWORD DhcpGetMibInfo(
    LPCWSTR ServerIpAddress,   // optional
    DHCP_MIB_INFO** MibInfo
);

パラメーター

名前	型	方向	説明
ServerIpAddress	LPCWSTR	inoptional	操作対象DHCPサーバのIPアドレスまたはホスト名(Unicode)。
MibInfo	DHCP_MIB_INFO**	inout	取得した統計(MIB)情報を受け取るDHCP_MIB_INFOへのポインタ。RPC割当てで要解放。

戻り値の型: DWORD

各言語での呼び出し定義

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

DWORD DhcpGetMibInfo(
    LPCWSTR ServerIpAddress,   // optional
    DHCP_MIB_INFO** MibInfo
);

[DllImport("DHCPSAPI.dll", ExactSpelling = true)]
static extern uint DhcpGetMibInfo(
    [MarshalAs(UnmanagedType.LPWStr)] string ServerIpAddress,   // LPCWSTR optional
    IntPtr MibInfo   // DHCP_MIB_INFO** in/out
);

<DllImport("DHCPSAPI.dll", ExactSpelling:=True)>
Public Shared Function DhcpGetMibInfo(
    <MarshalAs(UnmanagedType.LPWStr)> ServerIpAddress As String,   ' LPCWSTR optional
    MibInfo As IntPtr   ' DHCP_MIB_INFO** in/out
) As UInteger
End Function

' ServerIpAddress : LPCWSTR optional
' MibInfo : DHCP_MIB_INFO** in/out
Declare PtrSafe Function DhcpGetMibInfo Lib "dhcpsapi" ( _
    ByVal ServerIpAddress As LongPtr, _
    ByVal MibInfo 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

DhcpGetMibInfo = ctypes.windll.dhcpsapi.DhcpGetMibInfo
DhcpGetMibInfo.restype = wintypes.DWORD
DhcpGetMibInfo.argtypes = [
    wintypes.LPCWSTR,  # ServerIpAddress : LPCWSTR optional
    ctypes.c_void_p,  # MibInfo : DHCP_MIB_INFO** in/out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('DHCPSAPI.dll')
DhcpGetMibInfo = Fiddle::Function.new(
  lib['DhcpGetMibInfo'],
  [
    Fiddle::TYPE_VOIDP,  # ServerIpAddress : LPCWSTR optional
    Fiddle::TYPE_VOIDP,  # MibInfo : DHCP_MIB_INFO** in/out
  ],
  -Fiddle::TYPE_INT)

#[link(name = "dhcpsapi")]
extern "system" {
    fn DhcpGetMibInfo(
        ServerIpAddress: *const u16,  // LPCWSTR optional
        MibInfo: *mut *mut DHCP_MIB_INFO  // DHCP_MIB_INFO** in/out
    ) -> u32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("DHCPSAPI.dll")]
public static extern uint DhcpGetMibInfo([MarshalAs(UnmanagedType.LPWStr)] string ServerIpAddress, IntPtr MibInfo);
"@
$api = Add-Type -MemberDefinition $sig -Name 'DHCPSAPI_DhcpGetMibInfo' -Namespace Win32 -PassThru
# $api::DhcpGetMibInfo(ServerIpAddress, MibInfo)

#uselib "DHCPSAPI.dll"
#func global DhcpGetMibInfo "DhcpGetMibInfo" sptr, sptr
; DhcpGetMibInfo ServerIpAddress, varptr(MibInfo)   ; 戻り値は stat
; ServerIpAddress : LPCWSTR optional -> "sptr"
; MibInfo : DHCP_MIB_INFO** 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 "DHCPSAPI.dll"
#cfunc global DhcpGetMibInfo "DhcpGetMibInfo" wstr, var
; res = DhcpGetMibInfo(ServerIpAddress, MibInfo)
; ServerIpAddress : LPCWSTR optional -> "wstr"
; MibInfo : DHCP_MIB_INFO** 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 "DHCPSAPI.dll"
#cfunc global DhcpGetMibInfo "DhcpGetMibInfo" wstr, sptr
; res = DhcpGetMibInfo(ServerIpAddress, varptr(MibInfo))
; ServerIpAddress : LPCWSTR optional -> "wstr"
; MibInfo : DHCP_MIB_INFO** 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:

; DWORD DhcpGetMibInfo(LPCWSTR ServerIpAddress, DHCP_MIB_INFO** MibInfo)
#uselib "DHCPSAPI.dll"
#cfunc global DhcpGetMibInfo "DhcpGetMibInfo" wstr, var
; res = DhcpGetMibInfo(ServerIpAddress, MibInfo)
; ServerIpAddress : LPCWSTR optional -> "wstr"
; MibInfo : DHCP_MIB_INFO** 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。; DWORD DhcpGetMibInfo(LPCWSTR ServerIpAddress, DHCP_MIB_INFO** MibInfo)
#uselib "DHCPSAPI.dll"
#cfunc global DhcpGetMibInfo "DhcpGetMibInfo" wstr, intptr
; res = DhcpGetMibInfo(ServerIpAddress, varptr(MibInfo))
; ServerIpAddress : LPCWSTR optional -> "wstr"
; MibInfo : DHCP_MIB_INFO** 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 (
	dhcpsapi = windows.NewLazySystemDLL("DHCPSAPI.dll")
	procDhcpGetMibInfo = dhcpsapi.NewProc("DhcpGetMibInfo")
)

// ServerIpAddress (LPCWSTR optional), MibInfo (DHCP_MIB_INFO** in/out)
r1, _, err := procDhcpGetMibInfo.Call(
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(ServerIpAddress))),
	uintptr(MibInfo),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // DWORD

function DhcpGetMibInfo(
  ServerIpAddress: PWideChar;   // LPCWSTR optional
  MibInfo: Pointer   // DHCP_MIB_INFO** in/out
): DWORD; stdcall;
  external 'DHCPSAPI.dll' name 'DhcpGetMibInfo';

result := DllCall("DHCPSAPI\DhcpGetMibInfo"
    , "WStr", ServerIpAddress   ; LPCWSTR optional
    , "Ptr", MibInfo   ; DHCP_MIB_INFO** in/out
    , "UInt")   ; return: DWORD

●DhcpGetMibInfo(ServerIpAddress, MibInfo) = DLL("DHCPSAPI.dll", "dword DhcpGetMibInfo(char*, void*)")
# 呼び出し: DhcpGetMibInfo(ServerIpAddress, MibInfo)
# ServerIpAddress : LPCWSTR optional -> "char*"
# MibInfo : DHCP_MIB_INFO** 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)。