DhcpAddFilterV4

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

DWORD DhcpAddFilterV4(
    LPCWSTR ServerIpAddress,   // optional
    DHCP_FILTER_ADD_INFO* AddFilterInfo,
    BOOL ForceFlag
);

<DllImport("DHCPSAPI.dll", ExactSpelling:=True)>
Public Shared Function DhcpAddFilterV4(
    <MarshalAs(UnmanagedType.LPWStr)> ServerIpAddress As String,   ' LPCWSTR optional
    AddFilterInfo As IntPtr,   ' DHCP_FILTER_ADD_INFO*
    ForceFlag As Boolean   ' BOOL
) As UInteger
End Function

' ServerIpAddress : LPCWSTR optional
' AddFilterInfo : DHCP_FILTER_ADD_INFO*
' ForceFlag : BOOL
Declare PtrSafe Function DhcpAddFilterV4 Lib "dhcpsapi" ( _
    ByVal ServerIpAddress As LongPtr, _
    ByVal AddFilterInfo As LongPtr, _
    ByVal ForceFlag 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

DhcpAddFilterV4 = ctypes.windll.dhcpsapi.DhcpAddFilterV4
DhcpAddFilterV4.restype = wintypes.DWORD
DhcpAddFilterV4.argtypes = [
    wintypes.LPCWSTR,  # ServerIpAddress : LPCWSTR optional
    ctypes.c_void_p,  # AddFilterInfo : DHCP_FILTER_ADD_INFO*
    wintypes.BOOL,  # ForceFlag : BOOL
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('DHCPSAPI.dll')
DhcpAddFilterV4 = Fiddle::Function.new(
  lib['DhcpAddFilterV4'],
  [
    Fiddle::TYPE_VOIDP,  # ServerIpAddress : LPCWSTR optional
    Fiddle::TYPE_VOIDP,  # AddFilterInfo : DHCP_FILTER_ADD_INFO*
    Fiddle::TYPE_INT,  # ForceFlag : BOOL
  ],
  -Fiddle::TYPE_INT)

#[link(name = "dhcpsapi")]
extern "system" {
    fn DhcpAddFilterV4(
        ServerIpAddress: *const u16,  // LPCWSTR optional
        AddFilterInfo: *mut DHCP_FILTER_ADD_INFO,  // DHCP_FILTER_ADD_INFO*
        ForceFlag: i32  // BOOL
    ) -> u32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("DHCPSAPI.dll")]
public static extern uint DhcpAddFilterV4([MarshalAs(UnmanagedType.LPWStr)] string ServerIpAddress, IntPtr AddFilterInfo, bool ForceFlag);
"@
$api = Add-Type -MemberDefinition $sig -Name 'DHCPSAPI_DhcpAddFilterV4' -Namespace Win32 -PassThru
# $api::DhcpAddFilterV4(ServerIpAddress, AddFilterInfo, ForceFlag)

#uselib "DHCPSAPI.dll"
#func global DhcpAddFilterV4 "DhcpAddFilterV4" sptr, sptr, sptr
; DhcpAddFilterV4 ServerIpAddress, varptr(AddFilterInfo), ForceFlag   ; 戻り値は stat
; ServerIpAddress : LPCWSTR optional -> "sptr"
; AddFilterInfo : DHCP_FILTER_ADD_INFO* -> "sptr"
; ForceFlag : BOOL -> "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。

#uselib "DHCPSAPI.dll"
#cfunc global DhcpAddFilterV4 "DhcpAddFilterV4" wstr, var, int
; res = DhcpAddFilterV4(ServerIpAddress, AddFilterInfo, ForceFlag)
; ServerIpAddress : LPCWSTR optional -> "wstr"
; AddFilterInfo : DHCP_FILTER_ADD_INFO* -> "var"
; ForceFlag : BOOL -> "int"
; ※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 DhcpAddFilterV4(LPCWSTR ServerIpAddress, DHCP_FILTER_ADD_INFO* AddFilterInfo, BOOL ForceFlag)
#uselib "DHCPSAPI.dll"
#cfunc global DhcpAddFilterV4 "DhcpAddFilterV4" wstr, var, int
; res = DhcpAddFilterV4(ServerIpAddress, AddFilterInfo, ForceFlag)
; ServerIpAddress : LPCWSTR optional -> "wstr"
; AddFilterInfo : DHCP_FILTER_ADD_INFO* -> "var"
; ForceFlag : BOOL -> "int"
; ※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。

import (
	"golang.org/x/sys/windows"
	"unsafe"
)

var (
	dhcpsapi = windows.NewLazySystemDLL("DHCPSAPI.dll")
	procDhcpAddFilterV4 = dhcpsapi.NewProc("DhcpAddFilterV4")
)

// ServerIpAddress (LPCWSTR optional), AddFilterInfo (DHCP_FILTER_ADD_INFO*), ForceFlag (BOOL)
r1, _, err := procDhcpAddFilterV4.Call(
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(ServerIpAddress))),
	uintptr(AddFilterInfo),
	uintptr(ForceFlag),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // DWORD

function DhcpAddFilterV4(
  ServerIpAddress: PWideChar;   // LPCWSTR optional
  AddFilterInfo: Pointer;   // DHCP_FILTER_ADD_INFO*
  ForceFlag: BOOL   // BOOL
): DWORD; stdcall;
  external 'DHCPSAPI.dll' name 'DhcpAddFilterV4';

result := DllCall("DHCPSAPI\DhcpAddFilterV4"
    , "WStr", ServerIpAddress   ; LPCWSTR optional
    , "Ptr", AddFilterInfo   ; DHCP_FILTER_ADD_INFO*
    , "Int", ForceFlag   ; BOOL
    , "UInt")   ; return: DWORD

●DhcpAddFilterV4(ServerIpAddress, AddFilterInfo, ForceFlag) = DLL("DHCPSAPI.dll", "dword DhcpAddFilterV4(char*, void*, bool)")
# 呼び出し: DhcpAddFilterV4(ServerIpAddress, AddFilterInfo, ForceFlag)
# ServerIpAddress : LPCWSTR optional -> "char*"
# AddFilterInfo : DHCP_FILTER_ADD_INFO* -> "void*"
# ForceFlag : BOOL -> "bool"
# 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)。