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DhcpHlprIsV4PolicyValid

関数

IPv4 DHCPポリシーが有効かどうかを検証する。

DLLDHCPSAPI.dll呼出規約winapi対応OSwindowsserver2012

シグネチャ

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

DWORD DhcpHlprIsV4PolicyValid(
    DHCP_POLICY* pPolicy
);

パラメーター

名前	型	方向	説明
pPolicy	DHCP_POLICY*	in	ポリシー全体が有効かを検証する対象のDHCP_POLICY構造体へのポインタ。

戻り値の型: DWORD

各言語での呼び出し定義

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

DWORD DhcpHlprIsV4PolicyValid(
    DHCP_POLICY* pPolicy
);

[DllImport("DHCPSAPI.dll", ExactSpelling = true)]
static extern uint DhcpHlprIsV4PolicyValid(
    IntPtr pPolicy   // DHCP_POLICY*
);

<DllImport("DHCPSAPI.dll", ExactSpelling:=True)>
Public Shared Function DhcpHlprIsV4PolicyValid(
    pPolicy As IntPtr   ' DHCP_POLICY*
) As UInteger
End Function

' pPolicy : DHCP_POLICY*
Declare PtrSafe Function DhcpHlprIsV4PolicyValid Lib "dhcpsapi" ( _
    ByVal pPolicy 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

DhcpHlprIsV4PolicyValid = ctypes.windll.dhcpsapi.DhcpHlprIsV4PolicyValid
DhcpHlprIsV4PolicyValid.restype = wintypes.DWORD
DhcpHlprIsV4PolicyValid.argtypes = [
    ctypes.c_void_p,  # pPolicy : DHCP_POLICY*
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('DHCPSAPI.dll')
DhcpHlprIsV4PolicyValid = Fiddle::Function.new(
  lib['DhcpHlprIsV4PolicyValid'],
  [
    Fiddle::TYPE_VOIDP,  # pPolicy : DHCP_POLICY*
  ],
  -Fiddle::TYPE_INT)

#[link(name = "dhcpsapi")]
extern "system" {
    fn DhcpHlprIsV4PolicyValid(
        pPolicy: *mut DHCP_POLICY  // DHCP_POLICY*
    ) -> u32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("DHCPSAPI.dll")]
public static extern uint DhcpHlprIsV4PolicyValid(IntPtr pPolicy);
"@
$api = Add-Type -MemberDefinition $sig -Name 'DHCPSAPI_DhcpHlprIsV4PolicyValid' -Namespace Win32 -PassThru
# $api::DhcpHlprIsV4PolicyValid(pPolicy)

#uselib "DHCPSAPI.dll"
#func global DhcpHlprIsV4PolicyValid "DhcpHlprIsV4PolicyValid" sptr
; DhcpHlprIsV4PolicyValid varptr(pPolicy)   ; 戻り値は stat
; pPolicy : DHCP_POLICY* -> "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 DhcpHlprIsV4PolicyValid "DhcpHlprIsV4PolicyValid" var
; res = DhcpHlprIsV4PolicyValid(pPolicy)
; pPolicy : DHCP_POLICY* -> "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 DhcpHlprIsV4PolicyValid "DhcpHlprIsV4PolicyValid" sptr
; res = DhcpHlprIsV4PolicyValid(varptr(pPolicy))
; pPolicy : DHCP_POLICY* -> "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 DhcpHlprIsV4PolicyValid(DHCP_POLICY* pPolicy)
#uselib "DHCPSAPI.dll"
#cfunc global DhcpHlprIsV4PolicyValid "DhcpHlprIsV4PolicyValid" var
; res = DhcpHlprIsV4PolicyValid(pPolicy)
; pPolicy : DHCP_POLICY* -> "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 DhcpHlprIsV4PolicyValid(DHCP_POLICY* pPolicy)
#uselib "DHCPSAPI.dll"
#cfunc global DhcpHlprIsV4PolicyValid "DhcpHlprIsV4PolicyValid" intptr
; res = DhcpHlprIsV4PolicyValid(varptr(pPolicy))
; pPolicy : DHCP_POLICY* -> "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")
	procDhcpHlprIsV4PolicyValid = dhcpsapi.NewProc("DhcpHlprIsV4PolicyValid")
)

// pPolicy (DHCP_POLICY*)
r1, _, err := procDhcpHlprIsV4PolicyValid.Call(
	uintptr(pPolicy),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // DWORD

function DhcpHlprIsV4PolicyValid(
  pPolicy: Pointer   // DHCP_POLICY*
): DWORD; stdcall;
  external 'DHCPSAPI.dll' name 'DhcpHlprIsV4PolicyValid';

result := DllCall("DHCPSAPI\DhcpHlprIsV4PolicyValid"
    , "Ptr", pPolicy   ; DHCP_POLICY*
    , "UInt")   ; return: DWORD

●DhcpHlprIsV4PolicyValid(pPolicy) = DLL("DHCPSAPI.dll", "dword DhcpHlprIsV4PolicyValid(void*)")
# 呼び出し: DhcpHlprIsV4PolicyValid(pPolicy)
# pPolicy : DHCP_POLICY* -> "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)。