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DhcpEnumSubnetElementsV4

関数

DHCPサブネット内のV4拡張の指定種別要素を列挙する。

DLLDHCPSAPI.dll呼出規約winapi対応OSwindowsserver2000

シグネチャ

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

DWORD DhcpEnumSubnetElementsV4(
    LPCWSTR ServerIpAddress,   // optional
    DWORD SubnetAddress,
    DHCP_SUBNET_ELEMENT_TYPE EnumElementType,
    DWORD* ResumeHandle,
    DWORD PreferredMaximum,
    DHCP_SUBNET_ELEMENT_INFO_ARRAY_V4** EnumElementInfo,
    DWORD* ElementsRead,
    DWORD* ElementsTotal
);

パラメーター

名前	型	方向
ServerIpAddress	LPCWSTR	inoptional
SubnetAddress	DWORD	in
EnumElementType	DHCP_SUBNET_ELEMENT_TYPE	in
ResumeHandle	DWORD*	inout
PreferredMaximum	DWORD	in
EnumElementInfo	DHCP_SUBNET_ELEMENT_INFO_ARRAY_V4**	inout
ElementsRead	DWORD*	inout
ElementsTotal	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 DhcpEnumSubnetElementsV4(
    LPCWSTR ServerIpAddress,   // optional
    DWORD SubnetAddress,
    DHCP_SUBNET_ELEMENT_TYPE EnumElementType,
    DWORD* ResumeHandle,
    DWORD PreferredMaximum,
    DHCP_SUBNET_ELEMENT_INFO_ARRAY_V4** EnumElementInfo,
    DWORD* ElementsRead,
    DWORD* ElementsTotal
);

[DllImport("DHCPSAPI.dll", ExactSpelling = true)]
static extern uint DhcpEnumSubnetElementsV4(
    [MarshalAs(UnmanagedType.LPWStr)] string ServerIpAddress,   // LPCWSTR optional
    uint SubnetAddress,   // DWORD
    int EnumElementType,   // DHCP_SUBNET_ELEMENT_TYPE
    ref uint ResumeHandle,   // DWORD* in/out
    uint PreferredMaximum,   // DWORD
    IntPtr EnumElementInfo,   // DHCP_SUBNET_ELEMENT_INFO_ARRAY_V4** in/out
    ref uint ElementsRead,   // DWORD* in/out
    ref uint ElementsTotal   // DWORD* in/out
);

<DllImport("DHCPSAPI.dll", ExactSpelling:=True)>
Public Shared Function DhcpEnumSubnetElementsV4(
    <MarshalAs(UnmanagedType.LPWStr)> ServerIpAddress As String,   ' LPCWSTR optional
    SubnetAddress As UInteger,   ' DWORD
    EnumElementType As Integer,   ' DHCP_SUBNET_ELEMENT_TYPE
    ByRef ResumeHandle As UInteger,   ' DWORD* in/out
    PreferredMaximum As UInteger,   ' DWORD
    EnumElementInfo As IntPtr,   ' DHCP_SUBNET_ELEMENT_INFO_ARRAY_V4** in/out
    ByRef ElementsRead As UInteger,   ' DWORD* in/out
    ByRef ElementsTotal As UInteger   ' DWORD* in/out
) As UInteger
End Function

' ServerIpAddress : LPCWSTR optional
' SubnetAddress : DWORD
' EnumElementType : DHCP_SUBNET_ELEMENT_TYPE
' ResumeHandle : DWORD* in/out
' PreferredMaximum : DWORD
' EnumElementInfo : DHCP_SUBNET_ELEMENT_INFO_ARRAY_V4** in/out
' ElementsRead : DWORD* in/out
' ElementsTotal : DWORD* in/out
Declare PtrSafe Function DhcpEnumSubnetElementsV4 Lib "dhcpsapi" ( _
    ByVal ServerIpAddress As LongPtr, _
    ByVal SubnetAddress As Long, _
    ByVal EnumElementType As Long, _
    ByRef ResumeHandle As Long, _
    ByVal PreferredMaximum As Long, _
    ByVal EnumElementInfo As LongPtr, _
    ByRef ElementsRead As Long, _
    ByRef ElementsTotal 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

DhcpEnumSubnetElementsV4 = ctypes.windll.dhcpsapi.DhcpEnumSubnetElementsV4
DhcpEnumSubnetElementsV4.restype = wintypes.DWORD
DhcpEnumSubnetElementsV4.argtypes = [
    wintypes.LPCWSTR,  # ServerIpAddress : LPCWSTR optional
    wintypes.DWORD,  # SubnetAddress : DWORD
    ctypes.c_int,  # EnumElementType : DHCP_SUBNET_ELEMENT_TYPE
    ctypes.POINTER(wintypes.DWORD),  # ResumeHandle : DWORD* in/out
    wintypes.DWORD,  # PreferredMaximum : DWORD
    ctypes.c_void_p,  # EnumElementInfo : DHCP_SUBNET_ELEMENT_INFO_ARRAY_V4** in/out
    ctypes.POINTER(wintypes.DWORD),  # ElementsRead : DWORD* in/out
    ctypes.POINTER(wintypes.DWORD),  # ElementsTotal : DWORD* in/out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('DHCPSAPI.dll')
DhcpEnumSubnetElementsV4 = Fiddle::Function.new(
  lib['DhcpEnumSubnetElementsV4'],
  [
    Fiddle::TYPE_VOIDP,  # ServerIpAddress : LPCWSTR optional
    -Fiddle::TYPE_INT,  # SubnetAddress : DWORD
    Fiddle::TYPE_INT,  # EnumElementType : DHCP_SUBNET_ELEMENT_TYPE
    Fiddle::TYPE_VOIDP,  # ResumeHandle : DWORD* in/out
    -Fiddle::TYPE_INT,  # PreferredMaximum : DWORD
    Fiddle::TYPE_VOIDP,  # EnumElementInfo : DHCP_SUBNET_ELEMENT_INFO_ARRAY_V4** in/out
    Fiddle::TYPE_VOIDP,  # ElementsRead : DWORD* in/out
    Fiddle::TYPE_VOIDP,  # ElementsTotal : DWORD* in/out
  ],
  -Fiddle::TYPE_INT)

#[link(name = "dhcpsapi")]
extern "system" {
    fn DhcpEnumSubnetElementsV4(
        ServerIpAddress: *const u16,  // LPCWSTR optional
        SubnetAddress: u32,  // DWORD
        EnumElementType: i32,  // DHCP_SUBNET_ELEMENT_TYPE
        ResumeHandle: *mut u32,  // DWORD* in/out
        PreferredMaximum: u32,  // DWORD
        EnumElementInfo: *mut *mut DHCP_SUBNET_ELEMENT_INFO_ARRAY_V4,  // DHCP_SUBNET_ELEMENT_INFO_ARRAY_V4** in/out
        ElementsRead: *mut u32,  // DWORD* in/out
        ElementsTotal: *mut u32  // DWORD* in/out
    ) -> u32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("DHCPSAPI.dll")]
public static extern uint DhcpEnumSubnetElementsV4([MarshalAs(UnmanagedType.LPWStr)] string ServerIpAddress, uint SubnetAddress, int EnumElementType, ref uint ResumeHandle, uint PreferredMaximum, IntPtr EnumElementInfo, ref uint ElementsRead, ref uint ElementsTotal);
"@
$api = Add-Type -MemberDefinition $sig -Name 'DHCPSAPI_DhcpEnumSubnetElementsV4' -Namespace Win32 -PassThru
# $api::DhcpEnumSubnetElementsV4(ServerIpAddress, SubnetAddress, EnumElementType, ResumeHandle, PreferredMaximum, EnumElementInfo, ElementsRead, ElementsTotal)

#uselib "DHCPSAPI.dll"
#func global DhcpEnumSubnetElementsV4 "DhcpEnumSubnetElementsV4" sptr, sptr, sptr, sptr, sptr, sptr, sptr, sptr
; DhcpEnumSubnetElementsV4 ServerIpAddress, SubnetAddress, EnumElementType, varptr(ResumeHandle), PreferredMaximum, varptr(EnumElementInfo), varptr(ElementsRead), varptr(ElementsTotal)   ; 戻り値は stat
; ServerIpAddress : LPCWSTR optional -> "sptr"
; SubnetAddress : DWORD -> "sptr"
; EnumElementType : DHCP_SUBNET_ELEMENT_TYPE -> "sptr"
; ResumeHandle : DWORD* in/out -> "sptr"
; PreferredMaximum : DWORD -> "sptr"
; EnumElementInfo : DHCP_SUBNET_ELEMENT_INFO_ARRAY_V4** in/out -> "sptr"
; ElementsRead : DWORD* in/out -> "sptr"
; ElementsTotal : 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 DhcpEnumSubnetElementsV4 "DhcpEnumSubnetElementsV4" wstr, int, int, var, int, var, var, var
; res = DhcpEnumSubnetElementsV4(ServerIpAddress, SubnetAddress, EnumElementType, ResumeHandle, PreferredMaximum, EnumElementInfo, ElementsRead, ElementsTotal)
; ServerIpAddress : LPCWSTR optional -> "wstr"
; SubnetAddress : DWORD -> "int"
; EnumElementType : DHCP_SUBNET_ELEMENT_TYPE -> "int"
; ResumeHandle : DWORD* in/out -> "var"
; PreferredMaximum : DWORD -> "int"
; EnumElementInfo : DHCP_SUBNET_ELEMENT_INFO_ARRAY_V4** in/out -> "var"
; ElementsRead : DWORD* in/out -> "var"
; ElementsTotal : 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 DhcpEnumSubnetElementsV4 "DhcpEnumSubnetElementsV4" wstr, int, int, sptr, int, sptr, sptr, sptr
; res = DhcpEnumSubnetElementsV4(ServerIpAddress, SubnetAddress, EnumElementType, varptr(ResumeHandle), PreferredMaximum, varptr(EnumElementInfo), varptr(ElementsRead), varptr(ElementsTotal))
; ServerIpAddress : LPCWSTR optional -> "wstr"
; SubnetAddress : DWORD -> "int"
; EnumElementType : DHCP_SUBNET_ELEMENT_TYPE -> "int"
; ResumeHandle : DWORD* in/out -> "sptr"
; PreferredMaximum : DWORD -> "int"
; EnumElementInfo : DHCP_SUBNET_ELEMENT_INFO_ARRAY_V4** in/out -> "sptr"
; ElementsRead : DWORD* in/out -> "sptr"
; ElementsTotal : 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 DhcpEnumSubnetElementsV4(LPCWSTR ServerIpAddress, DWORD SubnetAddress, DHCP_SUBNET_ELEMENT_TYPE EnumElementType, DWORD* ResumeHandle, DWORD PreferredMaximum, DHCP_SUBNET_ELEMENT_INFO_ARRAY_V4** EnumElementInfo, DWORD* ElementsRead, DWORD* ElementsTotal)
#uselib "DHCPSAPI.dll"
#cfunc global DhcpEnumSubnetElementsV4 "DhcpEnumSubnetElementsV4" wstr, int, int, var, int, var, var, var
; res = DhcpEnumSubnetElementsV4(ServerIpAddress, SubnetAddress, EnumElementType, ResumeHandle, PreferredMaximum, EnumElementInfo, ElementsRead, ElementsTotal)
; ServerIpAddress : LPCWSTR optional -> "wstr"
; SubnetAddress : DWORD -> "int"
; EnumElementType : DHCP_SUBNET_ELEMENT_TYPE -> "int"
; ResumeHandle : DWORD* in/out -> "var"
; PreferredMaximum : DWORD -> "int"
; EnumElementInfo : DHCP_SUBNET_ELEMENT_INFO_ARRAY_V4** in/out -> "var"
; ElementsRead : DWORD* in/out -> "var"
; ElementsTotal : 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 DhcpEnumSubnetElementsV4(LPCWSTR ServerIpAddress, DWORD SubnetAddress, DHCP_SUBNET_ELEMENT_TYPE EnumElementType, DWORD* ResumeHandle, DWORD PreferredMaximum, DHCP_SUBNET_ELEMENT_INFO_ARRAY_V4** EnumElementInfo, DWORD* ElementsRead, DWORD* ElementsTotal)
#uselib "DHCPSAPI.dll"
#cfunc global DhcpEnumSubnetElementsV4 "DhcpEnumSubnetElementsV4" wstr, int, int, intptr, int, intptr, intptr, intptr
; res = DhcpEnumSubnetElementsV4(ServerIpAddress, SubnetAddress, EnumElementType, varptr(ResumeHandle), PreferredMaximum, varptr(EnumElementInfo), varptr(ElementsRead), varptr(ElementsTotal))
; ServerIpAddress : LPCWSTR optional -> "wstr"
; SubnetAddress : DWORD -> "int"
; EnumElementType : DHCP_SUBNET_ELEMENT_TYPE -> "int"
; ResumeHandle : DWORD* in/out -> "intptr"
; PreferredMaximum : DWORD -> "int"
; EnumElementInfo : DHCP_SUBNET_ELEMENT_INFO_ARRAY_V4** in/out -> "intptr"
; ElementsRead : DWORD* in/out -> "intptr"
; ElementsTotal : 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")
	procDhcpEnumSubnetElementsV4 = dhcpsapi.NewProc("DhcpEnumSubnetElementsV4")
)

// ServerIpAddress (LPCWSTR optional), SubnetAddress (DWORD), EnumElementType (DHCP_SUBNET_ELEMENT_TYPE), ResumeHandle (DWORD* in/out), PreferredMaximum (DWORD), EnumElementInfo (DHCP_SUBNET_ELEMENT_INFO_ARRAY_V4** in/out), ElementsRead (DWORD* in/out), ElementsTotal (DWORD* in/out)
r1, _, err := procDhcpEnumSubnetElementsV4.Call(
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(ServerIpAddress))),
	uintptr(SubnetAddress),
	uintptr(EnumElementType),
	uintptr(ResumeHandle),
	uintptr(PreferredMaximum),
	uintptr(EnumElementInfo),
	uintptr(ElementsRead),
	uintptr(ElementsTotal),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // DWORD

function DhcpEnumSubnetElementsV4(
  ServerIpAddress: PWideChar;   // LPCWSTR optional
  SubnetAddress: DWORD;   // DWORD
  EnumElementType: Integer;   // DHCP_SUBNET_ELEMENT_TYPE
  ResumeHandle: Pointer;   // DWORD* in/out
  PreferredMaximum: DWORD;   // DWORD
  EnumElementInfo: Pointer;   // DHCP_SUBNET_ELEMENT_INFO_ARRAY_V4** in/out
  ElementsRead: Pointer;   // DWORD* in/out
  ElementsTotal: Pointer   // DWORD* in/out
): DWORD; stdcall;
  external 'DHCPSAPI.dll' name 'DhcpEnumSubnetElementsV4';

result := DllCall("DHCPSAPI\DhcpEnumSubnetElementsV4"
    , "WStr", ServerIpAddress   ; LPCWSTR optional
    , "UInt", SubnetAddress   ; DWORD
    , "Int", EnumElementType   ; DHCP_SUBNET_ELEMENT_TYPE
    , "Ptr", ResumeHandle   ; DWORD* in/out
    , "UInt", PreferredMaximum   ; DWORD
    , "Ptr", EnumElementInfo   ; DHCP_SUBNET_ELEMENT_INFO_ARRAY_V4** in/out
    , "Ptr", ElementsRead   ; DWORD* in/out
    , "Ptr", ElementsTotal   ; DWORD* in/out
    , "UInt")   ; return: DWORD

●DhcpEnumSubnetElementsV4(ServerIpAddress, SubnetAddress, EnumElementType, ResumeHandle, PreferredMaximum, EnumElementInfo, ElementsRead, ElementsTotal) = DLL("DHCPSAPI.dll", "dword DhcpEnumSubnetElementsV4(char*, dword, int, void*, dword, void*, void*, void*)")
# 呼び出し: DhcpEnumSubnetElementsV4(ServerIpAddress, SubnetAddress, EnumElementType, ResumeHandle, PreferredMaximum, EnumElementInfo, ElementsRead, ElementsTotal)
# ServerIpAddress : LPCWSTR optional -> "char*"
# SubnetAddress : DWORD -> "dword"
# EnumElementType : DHCP_SUBNET_ELEMENT_TYPE -> "int"
# ResumeHandle : DWORD* in/out -> "void*"
# PreferredMaximum : DWORD -> "dword"
# EnumElementInfo : DHCP_SUBNET_ELEMENT_INFO_ARRAY_V4** in/out -> "void*"
# ElementsRead : DWORD* in/out -> "void*"
# ElementsTotal : 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)。