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DhcpEnumOptionsV6

関数

クラス/ベンダー指定でIPv6向けDHCPオプション定義を列挙する。

DLLDHCPSAPI.dll呼出規約winapi対応OSwindowsserver2008

シグネチャ

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

DWORD DhcpEnumOptionsV6(
    LPWSTR ServerIpAddress,   // optional
    DWORD Flags,
    LPWSTR ClassName,   // optional
    LPWSTR VendorName,   // optional
    DWORD* ResumeHandle,
    DWORD PreferredMaximum,
    DHCP_OPTION_ARRAY** Options,
    DWORD* OptionsRead,
    DWORD* OptionsTotal
);

パラメーター

名前	型	方向
ServerIpAddress	LPWSTR	inoptional
Flags	DWORD	in
ClassName	LPWSTR	inoptional
VendorName	LPWSTR	inoptional
ResumeHandle	DWORD*	inout
PreferredMaximum	DWORD	in
Options	DHCP_OPTION_ARRAY**	inout
OptionsRead	DWORD*	inout
OptionsTotal	DWORD*	inout

戻り値の型: DWORD

各言語での呼び出し定義

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

DWORD DhcpEnumOptionsV6(
    LPWSTR ServerIpAddress,   // optional
    DWORD Flags,
    LPWSTR ClassName,   // optional
    LPWSTR VendorName,   // optional
    DWORD* ResumeHandle,
    DWORD PreferredMaximum,
    DHCP_OPTION_ARRAY** Options,
    DWORD* OptionsRead,
    DWORD* OptionsTotal
);

[DllImport("DHCPSAPI.dll", ExactSpelling = true)]
static extern uint DhcpEnumOptionsV6(
    [MarshalAs(UnmanagedType.LPWStr)] string ServerIpAddress,   // LPWSTR optional
    uint Flags,   // DWORD
    [MarshalAs(UnmanagedType.LPWStr)] string ClassName,   // LPWSTR optional
    [MarshalAs(UnmanagedType.LPWStr)] string VendorName,   // LPWSTR optional
    ref uint ResumeHandle,   // DWORD* in/out
    uint PreferredMaximum,   // DWORD
    IntPtr Options,   // DHCP_OPTION_ARRAY** in/out
    ref uint OptionsRead,   // DWORD* in/out
    ref uint OptionsTotal   // DWORD* in/out
);

<DllImport("DHCPSAPI.dll", ExactSpelling:=True)>
Public Shared Function DhcpEnumOptionsV6(
    <MarshalAs(UnmanagedType.LPWStr)> ServerIpAddress As String,   ' LPWSTR optional
    Flags As UInteger,   ' DWORD
    <MarshalAs(UnmanagedType.LPWStr)> ClassName As String,   ' LPWSTR optional
    <MarshalAs(UnmanagedType.LPWStr)> VendorName As String,   ' LPWSTR optional
    ByRef ResumeHandle As UInteger,   ' DWORD* in/out
    PreferredMaximum As UInteger,   ' DWORD
    Options As IntPtr,   ' DHCP_OPTION_ARRAY** in/out
    ByRef OptionsRead As UInteger,   ' DWORD* in/out
    ByRef OptionsTotal As UInteger   ' DWORD* in/out
) As UInteger
End Function

' ServerIpAddress : LPWSTR optional
' Flags : DWORD
' ClassName : LPWSTR optional
' VendorName : LPWSTR optional
' ResumeHandle : DWORD* in/out
' PreferredMaximum : DWORD
' Options : DHCP_OPTION_ARRAY** in/out
' OptionsRead : DWORD* in/out
' OptionsTotal : DWORD* in/out
Declare PtrSafe Function DhcpEnumOptionsV6 Lib "dhcpsapi" ( _
    ByVal ServerIpAddress As LongPtr, _
    ByVal Flags As Long, _
    ByVal ClassName As LongPtr, _
    ByVal VendorName As LongPtr, _
    ByRef ResumeHandle As Long, _
    ByVal PreferredMaximum As Long, _
    ByVal Options As LongPtr, _
    ByRef OptionsRead As Long, _
    ByRef OptionsTotal As Long) As Long
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

DhcpEnumOptionsV6 = ctypes.windll.dhcpsapi.DhcpEnumOptionsV6
DhcpEnumOptionsV6.restype = wintypes.DWORD
DhcpEnumOptionsV6.argtypes = [
    wintypes.LPCWSTR,  # ServerIpAddress : LPWSTR optional
    wintypes.DWORD,  # Flags : DWORD
    wintypes.LPCWSTR,  # ClassName : LPWSTR optional
    wintypes.LPCWSTR,  # VendorName : LPWSTR optional
    ctypes.POINTER(wintypes.DWORD),  # ResumeHandle : DWORD* in/out
    wintypes.DWORD,  # PreferredMaximum : DWORD
    ctypes.c_void_p,  # Options : DHCP_OPTION_ARRAY** in/out
    ctypes.POINTER(wintypes.DWORD),  # OptionsRead : DWORD* in/out
    ctypes.POINTER(wintypes.DWORD),  # OptionsTotal : DWORD* in/out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('DHCPSAPI.dll')
DhcpEnumOptionsV6 = Fiddle::Function.new(
  lib['DhcpEnumOptionsV6'],
  [
    Fiddle::TYPE_VOIDP,  # ServerIpAddress : LPWSTR optional
    -Fiddle::TYPE_INT,  # Flags : DWORD
    Fiddle::TYPE_VOIDP,  # ClassName : LPWSTR optional
    Fiddle::TYPE_VOIDP,  # VendorName : LPWSTR optional
    Fiddle::TYPE_VOIDP,  # ResumeHandle : DWORD* in/out
    -Fiddle::TYPE_INT,  # PreferredMaximum : DWORD
    Fiddle::TYPE_VOIDP,  # Options : DHCP_OPTION_ARRAY** in/out
    Fiddle::TYPE_VOIDP,  # OptionsRead : DWORD* in/out
    Fiddle::TYPE_VOIDP,  # OptionsTotal : DWORD* in/out
  ],
  -Fiddle::TYPE_INT)

#[link(name = "dhcpsapi")]
extern "system" {
    fn DhcpEnumOptionsV6(
        ServerIpAddress: *mut u16,  // LPWSTR optional
        Flags: u32,  // DWORD
        ClassName: *mut u16,  // LPWSTR optional
        VendorName: *mut u16,  // LPWSTR optional
        ResumeHandle: *mut u32,  // DWORD* in/out
        PreferredMaximum: u32,  // DWORD
        Options: *mut *mut DHCP_OPTION_ARRAY,  // DHCP_OPTION_ARRAY** in/out
        OptionsRead: *mut u32,  // DWORD* in/out
        OptionsTotal: *mut u32  // DWORD* in/out
    ) -> u32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("DHCPSAPI.dll")]
public static extern uint DhcpEnumOptionsV6([MarshalAs(UnmanagedType.LPWStr)] string ServerIpAddress, uint Flags, [MarshalAs(UnmanagedType.LPWStr)] string ClassName, [MarshalAs(UnmanagedType.LPWStr)] string VendorName, ref uint ResumeHandle, uint PreferredMaximum, IntPtr Options, ref uint OptionsRead, ref uint OptionsTotal);
"@
$api = Add-Type -MemberDefinition $sig -Name 'DHCPSAPI_DhcpEnumOptionsV6' -Namespace Win32 -PassThru
# $api::DhcpEnumOptionsV6(ServerIpAddress, Flags, ClassName, VendorName, ResumeHandle, PreferredMaximum, Options, OptionsRead, OptionsTotal)

#uselib "DHCPSAPI.dll"
#func global DhcpEnumOptionsV6 "DhcpEnumOptionsV6" sptr, sptr, sptr, sptr, sptr, sptr, sptr, sptr, sptr
; DhcpEnumOptionsV6 ServerIpAddress, Flags, ClassName, VendorName, varptr(ResumeHandle), PreferredMaximum, varptr(Options), varptr(OptionsRead), varptr(OptionsTotal)   ; 戻り値は stat
; ServerIpAddress : LPWSTR optional -> "sptr"
; Flags : DWORD -> "sptr"
; ClassName : LPWSTR optional -> "sptr"
; VendorName : LPWSTR optional -> "sptr"
; ResumeHandle : DWORD* in/out -> "sptr"
; PreferredMaximum : DWORD -> "sptr"
; Options : DHCP_OPTION_ARRAY** in/out -> "sptr"
; OptionsRead : DWORD* in/out -> "sptr"
; OptionsTotal : DWORD* 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 DhcpEnumOptionsV6 "DhcpEnumOptionsV6" wstr, int, wstr, wstr, var, int, var, var, var
; res = DhcpEnumOptionsV6(ServerIpAddress, Flags, ClassName, VendorName, ResumeHandle, PreferredMaximum, Options, OptionsRead, OptionsTotal)
; ServerIpAddress : LPWSTR optional -> "wstr"
; Flags : DWORD -> "int"
; ClassName : LPWSTR optional -> "wstr"
; VendorName : LPWSTR optional -> "wstr"
; ResumeHandle : DWORD* in/out -> "var"
; PreferredMaximum : DWORD -> "int"
; Options : DHCP_OPTION_ARRAY** in/out -> "var"
; OptionsRead : DWORD* in/out -> "var"
; OptionsTotal : DWORD* 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 DhcpEnumOptionsV6 "DhcpEnumOptionsV6" wstr, int, wstr, wstr, sptr, int, sptr, sptr, sptr
; res = DhcpEnumOptionsV6(ServerIpAddress, Flags, ClassName, VendorName, varptr(ResumeHandle), PreferredMaximum, varptr(Options), varptr(OptionsRead), varptr(OptionsTotal))
; ServerIpAddress : LPWSTR optional -> "wstr"
; Flags : DWORD -> "int"
; ClassName : LPWSTR optional -> "wstr"
; VendorName : LPWSTR optional -> "wstr"
; ResumeHandle : DWORD* in/out -> "sptr"
; PreferredMaximum : DWORD -> "int"
; Options : DHCP_OPTION_ARRAY** in/out -> "sptr"
; OptionsRead : DWORD* in/out -> "sptr"
; OptionsTotal : DWORD* 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 DhcpEnumOptionsV6(LPWSTR ServerIpAddress, DWORD Flags, LPWSTR ClassName, LPWSTR VendorName, DWORD* ResumeHandle, DWORD PreferredMaximum, DHCP_OPTION_ARRAY** Options, DWORD* OptionsRead, DWORD* OptionsTotal)
#uselib "DHCPSAPI.dll"
#cfunc global DhcpEnumOptionsV6 "DhcpEnumOptionsV6" wstr, int, wstr, wstr, var, int, var, var, var
; res = DhcpEnumOptionsV6(ServerIpAddress, Flags, ClassName, VendorName, ResumeHandle, PreferredMaximum, Options, OptionsRead, OptionsTotal)
; ServerIpAddress : LPWSTR optional -> "wstr"
; Flags : DWORD -> "int"
; ClassName : LPWSTR optional -> "wstr"
; VendorName : LPWSTR optional -> "wstr"
; ResumeHandle : DWORD* in/out -> "var"
; PreferredMaximum : DWORD -> "int"
; Options : DHCP_OPTION_ARRAY** in/out -> "var"
; OptionsRead : DWORD* in/out -> "var"
; OptionsTotal : DWORD* 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 DhcpEnumOptionsV6(LPWSTR ServerIpAddress, DWORD Flags, LPWSTR ClassName, LPWSTR VendorName, DWORD* ResumeHandle, DWORD PreferredMaximum, DHCP_OPTION_ARRAY** Options, DWORD* OptionsRead, DWORD* OptionsTotal)
#uselib "DHCPSAPI.dll"
#cfunc global DhcpEnumOptionsV6 "DhcpEnumOptionsV6" wstr, int, wstr, wstr, intptr, int, intptr, intptr, intptr
; res = DhcpEnumOptionsV6(ServerIpAddress, Flags, ClassName, VendorName, varptr(ResumeHandle), PreferredMaximum, varptr(Options), varptr(OptionsRead), varptr(OptionsTotal))
; ServerIpAddress : LPWSTR optional -> "wstr"
; Flags : DWORD -> "int"
; ClassName : LPWSTR optional -> "wstr"
; VendorName : LPWSTR optional -> "wstr"
; ResumeHandle : DWORD* in/out -> "intptr"
; PreferredMaximum : DWORD -> "int"
; Options : DHCP_OPTION_ARRAY** in/out -> "intptr"
; OptionsRead : DWORD* in/out -> "intptr"
; OptionsTotal : DWORD* 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")
	procDhcpEnumOptionsV6 = dhcpsapi.NewProc("DhcpEnumOptionsV6")
)

// ServerIpAddress (LPWSTR optional), Flags (DWORD), ClassName (LPWSTR optional), VendorName (LPWSTR optional), ResumeHandle (DWORD* in/out), PreferredMaximum (DWORD), Options (DHCP_OPTION_ARRAY** in/out), OptionsRead (DWORD* in/out), OptionsTotal (DWORD* in/out)
r1, _, err := procDhcpEnumOptionsV6.Call(
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(ServerIpAddress))),
	uintptr(Flags),
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(ClassName))),
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(VendorName))),
	uintptr(ResumeHandle),
	uintptr(PreferredMaximum),
	uintptr(Options),
	uintptr(OptionsRead),
	uintptr(OptionsTotal),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // DWORD

function DhcpEnumOptionsV6(
  ServerIpAddress: PWideChar;   // LPWSTR optional
  Flags: DWORD;   // DWORD
  ClassName: PWideChar;   // LPWSTR optional
  VendorName: PWideChar;   // LPWSTR optional
  ResumeHandle: Pointer;   // DWORD* in/out
  PreferredMaximum: DWORD;   // DWORD
  Options: Pointer;   // DHCP_OPTION_ARRAY** in/out
  OptionsRead: Pointer;   // DWORD* in/out
  OptionsTotal: Pointer   // DWORD* in/out
): DWORD; stdcall;
  external 'DHCPSAPI.dll' name 'DhcpEnumOptionsV6';

result := DllCall("DHCPSAPI\DhcpEnumOptionsV6"
    , "WStr", ServerIpAddress   ; LPWSTR optional
    , "UInt", Flags   ; DWORD
    , "WStr", ClassName   ; LPWSTR optional
    , "WStr", VendorName   ; LPWSTR optional
    , "Ptr", ResumeHandle   ; DWORD* in/out
    , "UInt", PreferredMaximum   ; DWORD
    , "Ptr", Options   ; DHCP_OPTION_ARRAY** in/out
    , "Ptr", OptionsRead   ; DWORD* in/out
    , "Ptr", OptionsTotal   ; DWORD* in/out
    , "UInt")   ; return: DWORD

●DhcpEnumOptionsV6(ServerIpAddress, Flags, ClassName, VendorName, ResumeHandle, PreferredMaximum, Options, OptionsRead, OptionsTotal) = DLL("DHCPSAPI.dll", "dword DhcpEnumOptionsV6(char*, dword, char*, char*, void*, dword, void*, void*, void*)")
# 呼び出し: DhcpEnumOptionsV6(ServerIpAddress, Flags, ClassName, VendorName, ResumeHandle, PreferredMaximum, Options, OptionsRead, OptionsTotal)
# ServerIpAddress : LPWSTR optional -> "char*"
# Flags : DWORD -> "dword"
# ClassName : LPWSTR optional -> "char*"
# VendorName : LPWSTR optional -> "char*"
# ResumeHandle : DWORD* in/out -> "void*"
# PreferredMaximum : DWORD -> "dword"
# Options : DHCP_OPTION_ARRAY** in/out -> "void*"
# OptionsRead : DWORD* in/out -> "void*"
# OptionsTotal : DWORD* 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)。