ホーム › NetworkManagement.Dhcp › DhcpRequestParams

DhcpRequestParams

関数

DHCPサーバーから指定オプションパラメータを要求し取得する。

DLLdhcpcsvc.dll呼出規約winapi対応OSWindows 2000 以降

シグネチャ

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

DWORD DhcpRequestParams(
    DWORD Flags,
    void* Reserved,
    LPWSTR AdapterName,
    DHCPCAPI_CLASSID* ClassId,
    DHCPCAPI_PARAMS_ARRAY SendParams,
    DHCPCAPI_PARAMS_ARRAY RecdParams,
    BYTE* Buffer,
    DWORD* pSize,
    LPWSTR RequestIdStr
);

パラメーター

名前	型	方向
Flags	DWORD	in
Reserved	void*	inout
AdapterName	LPWSTR	in
ClassId	DHCPCAPI_CLASSID*	inout
SendParams	DHCPCAPI_PARAMS_ARRAY	in
RecdParams	DHCPCAPI_PARAMS_ARRAY	in
Buffer	BYTE*	out
pSize	DWORD*	inout
RequestIdStr	LPWSTR	in

戻り値の型: DWORD

各言語での呼び出し定義

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

DWORD DhcpRequestParams(
    DWORD Flags,
    void* Reserved,
    LPWSTR AdapterName,
    DHCPCAPI_CLASSID* ClassId,
    DHCPCAPI_PARAMS_ARRAY SendParams,
    DHCPCAPI_PARAMS_ARRAY RecdParams,
    BYTE* Buffer,
    DWORD* pSize,
    LPWSTR RequestIdStr
);

[DllImport("dhcpcsvc.dll", ExactSpelling = true)]
static extern uint DhcpRequestParams(
    uint Flags,   // DWORD
    IntPtr Reserved,   // void* in/out
    [MarshalAs(UnmanagedType.LPWStr)] string AdapterName,   // LPWSTR
    IntPtr ClassId,   // DHCPCAPI_CLASSID* in/out
    DHCPCAPI_PARAMS_ARRAY SendParams,   // DHCPCAPI_PARAMS_ARRAY
    DHCPCAPI_PARAMS_ARRAY RecdParams,   // DHCPCAPI_PARAMS_ARRAY
    IntPtr Buffer,   // BYTE* out
    ref uint pSize,   // DWORD* in/out
    [MarshalAs(UnmanagedType.LPWStr)] string RequestIdStr   // LPWSTR
);

<DllImport("dhcpcsvc.dll", ExactSpelling:=True)>
Public Shared Function DhcpRequestParams(
    Flags As UInteger,   ' DWORD
    Reserved As IntPtr,   ' void* in/out
    <MarshalAs(UnmanagedType.LPWStr)> AdapterName As String,   ' LPWSTR
    ClassId As IntPtr,   ' DHCPCAPI_CLASSID* in/out
    SendParams As DHCPCAPI_PARAMS_ARRAY,   ' DHCPCAPI_PARAMS_ARRAY
    RecdParams As DHCPCAPI_PARAMS_ARRAY,   ' DHCPCAPI_PARAMS_ARRAY
    Buffer As IntPtr,   ' BYTE* out
    ByRef pSize As UInteger,   ' DWORD* in/out
    <MarshalAs(UnmanagedType.LPWStr)> RequestIdStr As String   ' LPWSTR
) As UInteger
End Function

' Flags : DWORD
' Reserved : void* in/out
' AdapterName : LPWSTR
' ClassId : DHCPCAPI_CLASSID* in/out
' SendParams : DHCPCAPI_PARAMS_ARRAY
' RecdParams : DHCPCAPI_PARAMS_ARRAY
' Buffer : BYTE* out
' pSize : DWORD* in/out
' RequestIdStr : LPWSTR
Declare PtrSafe Function DhcpRequestParams Lib "dhcpcsvc" ( _
    ByVal Flags As Long, _
    ByVal Reserved As LongPtr, _
    ByVal AdapterName As LongPtr, _
    ByVal ClassId As LongPtr, _
    ByVal SendParams As LongPtr, _
    ByVal RecdParams As LongPtr, _
    ByVal Buffer As LongPtr, _
    ByRef pSize As Long, _
    ByVal RequestIdStr 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

DhcpRequestParams = ctypes.windll.dhcpcsvc.DhcpRequestParams
DhcpRequestParams.restype = wintypes.DWORD
DhcpRequestParams.argtypes = [
    wintypes.DWORD,  # Flags : DWORD
    ctypes.POINTER(None),  # Reserved : void* in/out
    wintypes.LPCWSTR,  # AdapterName : LPWSTR
    ctypes.c_void_p,  # ClassId : DHCPCAPI_CLASSID* in/out
    DHCPCAPI_PARAMS_ARRAY,  # SendParams : DHCPCAPI_PARAMS_ARRAY
    DHCPCAPI_PARAMS_ARRAY,  # RecdParams : DHCPCAPI_PARAMS_ARRAY
    ctypes.POINTER(ctypes.c_ubyte),  # Buffer : BYTE* out
    ctypes.POINTER(wintypes.DWORD),  # pSize : DWORD* in/out
    wintypes.LPCWSTR,  # RequestIdStr : LPWSTR
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('dhcpcsvc.dll')
DhcpRequestParams = Fiddle::Function.new(
  lib['DhcpRequestParams'],
  [
    -Fiddle::TYPE_INT,  # Flags : DWORD
    Fiddle::TYPE_VOIDP,  # Reserved : void* in/out
    Fiddle::TYPE_VOIDP,  # AdapterName : LPWSTR
    Fiddle::TYPE_VOIDP,  # ClassId : DHCPCAPI_CLASSID* in/out
    Fiddle::TYPE_VOIDP,  # SendParams : DHCPCAPI_PARAMS_ARRAY
    Fiddle::TYPE_VOIDP,  # RecdParams : DHCPCAPI_PARAMS_ARRAY
    Fiddle::TYPE_VOIDP,  # Buffer : BYTE* out
    Fiddle::TYPE_VOIDP,  # pSize : DWORD* in/out
    Fiddle::TYPE_VOIDP,  # RequestIdStr : LPWSTR
  ],
  -Fiddle::TYPE_INT)

#[link(name = "dhcpcsvc")]
extern "system" {
    fn DhcpRequestParams(
        Flags: u32,  // DWORD
        Reserved: *mut (),  // void* in/out
        AdapterName: *mut u16,  // LPWSTR
        ClassId: *mut DHCPCAPI_CLASSID,  // DHCPCAPI_CLASSID* in/out
        SendParams: DHCPCAPI_PARAMS_ARRAY,  // DHCPCAPI_PARAMS_ARRAY
        RecdParams: DHCPCAPI_PARAMS_ARRAY,  // DHCPCAPI_PARAMS_ARRAY
        Buffer: *mut u8,  // BYTE* out
        pSize: *mut u32,  // DWORD* in/out
        RequestIdStr: *mut u16  // LPWSTR
    ) -> u32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("dhcpcsvc.dll")]
public static extern uint DhcpRequestParams(uint Flags, IntPtr Reserved, [MarshalAs(UnmanagedType.LPWStr)] string AdapterName, IntPtr ClassId, DHCPCAPI_PARAMS_ARRAY SendParams, DHCPCAPI_PARAMS_ARRAY RecdParams, IntPtr Buffer, ref uint pSize, [MarshalAs(UnmanagedType.LPWStr)] string RequestIdStr);
"@
$api = Add-Type -MemberDefinition $sig -Name 'dhcpcsvc_DhcpRequestParams' -Namespace Win32 -PassThru
# $api::DhcpRequestParams(Flags, Reserved, AdapterName, ClassId, SendParams, RecdParams, Buffer, pSize, RequestIdStr)

#uselib "dhcpcsvc.dll"
#func global DhcpRequestParams "DhcpRequestParams" sptr, sptr, sptr, sptr, sptr, sptr, sptr, sptr, sptr
; DhcpRequestParams Flags, Reserved, AdapterName, varptr(ClassId), SendParams, RecdParams, varptr(Buffer), varptr(pSize), RequestIdStr   ; 戻り値は stat
; Flags : DWORD -> "sptr"
; Reserved : void* in/out -> "sptr"
; AdapterName : LPWSTR -> "sptr"
; ClassId : DHCPCAPI_CLASSID* in/out -> "sptr"
; SendParams : DHCPCAPI_PARAMS_ARRAY -> "sptr"
; RecdParams : DHCPCAPI_PARAMS_ARRAY -> "sptr"
; Buffer : BYTE* out -> "sptr"
; pSize : DWORD* in/out -> "sptr"
; RequestIdStr : LPWSTR -> "sptr"
; ※値渡し構造体は直接渡せません。intにパック、または var で構造体変数を渡してください。
; ※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 "dhcpcsvc.dll"
#cfunc global DhcpRequestParams "DhcpRequestParams" int, sptr, wstr, var, int, int, var, var, wstr
; res = DhcpRequestParams(Flags, Reserved, AdapterName, ClassId, SendParams, RecdParams, Buffer, pSize, RequestIdStr)
; Flags : DWORD -> "int"
; Reserved : void* in/out -> "sptr"
; AdapterName : LPWSTR -> "wstr"
; ClassId : DHCPCAPI_CLASSID* in/out -> "var"
; SendParams : DHCPCAPI_PARAMS_ARRAY -> "int"
; RecdParams : DHCPCAPI_PARAMS_ARRAY -> "int"
; Buffer : BYTE* out -> "var"
; pSize : DWORD* in/out -> "var"
; RequestIdStr : LPWSTR -> "wstr"
; ※値渡し構造体は直接渡せません。intにパック、または var で構造体変数を渡してください。
; ※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 "dhcpcsvc.dll"
#cfunc global DhcpRequestParams "DhcpRequestParams" int, sptr, wstr, sptr, int, int, sptr, sptr, wstr
; res = DhcpRequestParams(Flags, Reserved, AdapterName, varptr(ClassId), SendParams, RecdParams, varptr(Buffer), varptr(pSize), RequestIdStr)
; Flags : DWORD -> "int"
; Reserved : void* in/out -> "sptr"
; AdapterName : LPWSTR -> "wstr"
; ClassId : DHCPCAPI_CLASSID* in/out -> "sptr"
; SendParams : DHCPCAPI_PARAMS_ARRAY -> "int"
; RecdParams : DHCPCAPI_PARAMS_ARRAY -> "int"
; Buffer : BYTE* out -> "sptr"
; pSize : DWORD* in/out -> "sptr"
; RequestIdStr : LPWSTR -> "wstr"
; ※値渡し構造体は直接渡せません。intにパック、または var で構造体変数を渡してください。
; ※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 DhcpRequestParams(DWORD Flags, void* Reserved, LPWSTR AdapterName, DHCPCAPI_CLASSID* ClassId, DHCPCAPI_PARAMS_ARRAY SendParams, DHCPCAPI_PARAMS_ARRAY RecdParams, BYTE* Buffer, DWORD* pSize, LPWSTR RequestIdStr)
#uselib "dhcpcsvc.dll"
#cfunc global DhcpRequestParams "DhcpRequestParams" int, intptr, wstr, var, int, int, var, var, wstr
; res = DhcpRequestParams(Flags, Reserved, AdapterName, ClassId, SendParams, RecdParams, Buffer, pSize, RequestIdStr)
; Flags : DWORD -> "int"
; Reserved : void* in/out -> "intptr"
; AdapterName : LPWSTR -> "wstr"
; ClassId : DHCPCAPI_CLASSID* in/out -> "var"
; SendParams : DHCPCAPI_PARAMS_ARRAY -> "int"
; RecdParams : DHCPCAPI_PARAMS_ARRAY -> "int"
; Buffer : BYTE* out -> "var"
; pSize : DWORD* in/out -> "var"
; RequestIdStr : LPWSTR -> "wstr"
; ※値渡し構造体は直接渡せません。intにパック、または var で構造体変数を渡してください。
; ※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 DhcpRequestParams(DWORD Flags, void* Reserved, LPWSTR AdapterName, DHCPCAPI_CLASSID* ClassId, DHCPCAPI_PARAMS_ARRAY SendParams, DHCPCAPI_PARAMS_ARRAY RecdParams, BYTE* Buffer, DWORD* pSize, LPWSTR RequestIdStr)
#uselib "dhcpcsvc.dll"
#cfunc global DhcpRequestParams "DhcpRequestParams" int, intptr, wstr, intptr, int, int, intptr, intptr, wstr
; res = DhcpRequestParams(Flags, Reserved, AdapterName, varptr(ClassId), SendParams, RecdParams, varptr(Buffer), varptr(pSize), RequestIdStr)
; Flags : DWORD -> "int"
; Reserved : void* in/out -> "intptr"
; AdapterName : LPWSTR -> "wstr"
; ClassId : DHCPCAPI_CLASSID* in/out -> "intptr"
; SendParams : DHCPCAPI_PARAMS_ARRAY -> "int"
; RecdParams : DHCPCAPI_PARAMS_ARRAY -> "int"
; Buffer : BYTE* out -> "intptr"
; pSize : DWORD* in/out -> "intptr"
; RequestIdStr : LPWSTR -> "wstr"
; ※値渡し構造体は直接渡せません。intにパック、または var で構造体変数を渡してください。
; ※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 (
	dhcpcsvc = windows.NewLazySystemDLL("dhcpcsvc.dll")
	procDhcpRequestParams = dhcpcsvc.NewProc("DhcpRequestParams")
)

// Flags (DWORD), Reserved (void* in/out), AdapterName (LPWSTR), ClassId (DHCPCAPI_CLASSID* in/out), SendParams (DHCPCAPI_PARAMS_ARRAY), RecdParams (DHCPCAPI_PARAMS_ARRAY), Buffer (BYTE* out), pSize (DWORD* in/out), RequestIdStr (LPWSTR)
r1, _, err := procDhcpRequestParams.Call(
	uintptr(Flags),
	uintptr(Reserved),
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(AdapterName))),
	uintptr(ClassId),
	uintptr(SendParams),
	uintptr(RecdParams),
	uintptr(Buffer),
	uintptr(pSize),
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(RequestIdStr))),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // DWORD

function DhcpRequestParams(
  Flags: DWORD;   // DWORD
  Reserved: Pointer;   // void* in/out
  AdapterName: PWideChar;   // LPWSTR
  ClassId: Pointer;   // DHCPCAPI_CLASSID* in/out
  SendParams: DHCPCAPI_PARAMS_ARRAY;   // DHCPCAPI_PARAMS_ARRAY
  RecdParams: DHCPCAPI_PARAMS_ARRAY;   // DHCPCAPI_PARAMS_ARRAY
  Buffer: Pointer;   // BYTE* out
  pSize: Pointer;   // DWORD* in/out
  RequestIdStr: PWideChar   // LPWSTR
): DWORD; stdcall;
  external 'dhcpcsvc.dll' name 'DhcpRequestParams';

result := DllCall("dhcpcsvc\DhcpRequestParams"
    , "UInt", Flags   ; DWORD
    , "Ptr", Reserved   ; void* in/out
    , "WStr", AdapterName   ; LPWSTR
    , "Ptr", ClassId   ; DHCPCAPI_CLASSID* in/out
    , "Ptr", SendParams   ; DHCPCAPI_PARAMS_ARRAY
    , "Ptr", RecdParams   ; DHCPCAPI_PARAMS_ARRAY
    , "Ptr", Buffer   ; BYTE* out
    , "Ptr", pSize   ; DWORD* in/out
    , "WStr", RequestIdStr   ; LPWSTR
    , "UInt")   ; return: DWORD

●DhcpRequestParams(Flags, Reserved, AdapterName, ClassId, SendParams, RecdParams, Buffer, pSize, RequestIdStr) = DLL("dhcpcsvc.dll", "dword DhcpRequestParams(dword, void*, char*, void*, void*, void*, void*, void*, char*)")
# 呼び出し: DhcpRequestParams(Flags, Reserved, AdapterName, ClassId, SendParams, RecdParams, Buffer, pSize, RequestIdStr)
# Flags : DWORD -> "dword"
# Reserved : void* in/out -> "void*"
# AdapterName : LPWSTR -> "char*"
# ClassId : DHCPCAPI_CLASSID* in/out -> "void*"
# SendParams : DHCPCAPI_PARAMS_ARRAY -> "void*"
# RecdParams : DHCPCAPI_PARAMS_ARRAY -> "void*"
# Buffer : BYTE* out -> "void*"
# pSize : DWORD* in/out -> "void*"
# RequestIdStr : LPWSTR -> "char*"
# 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)。