DhcpSetOptionValues

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

DWORD DhcpSetOptionValues(
    LPCWSTR ServerIpAddress,   // optional
    const DHCP_OPTION_SCOPE_INFO* ScopeInfo,
    const DHCP_OPTION_VALUE_ARRAY* OptionValues
);

<DllImport("DHCPSAPI.dll", ExactSpelling:=True)>
Public Shared Function DhcpSetOptionValues(
    <MarshalAs(UnmanagedType.LPWStr)> ServerIpAddress As String,   ' LPCWSTR optional
    ScopeInfo As IntPtr,   ' DHCP_OPTION_SCOPE_INFO*
    OptionValues As IntPtr   ' DHCP_OPTION_VALUE_ARRAY*
) As UInteger
End Function

' ServerIpAddress : LPCWSTR optional
' ScopeInfo : DHCP_OPTION_SCOPE_INFO*
' OptionValues : DHCP_OPTION_VALUE_ARRAY*
Declare PtrSafe Function DhcpSetOptionValues Lib "dhcpsapi" ( _
    ByVal ServerIpAddress As LongPtr, _
    ByVal ScopeInfo As LongPtr, _
    ByVal OptionValues 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

DhcpSetOptionValues = ctypes.windll.dhcpsapi.DhcpSetOptionValues
DhcpSetOptionValues.restype = wintypes.DWORD
DhcpSetOptionValues.argtypes = [
    wintypes.LPCWSTR,  # ServerIpAddress : LPCWSTR optional
    ctypes.c_void_p,  # ScopeInfo : DHCP_OPTION_SCOPE_INFO*
    ctypes.c_void_p,  # OptionValues : DHCP_OPTION_VALUE_ARRAY*
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('DHCPSAPI.dll')
DhcpSetOptionValues = Fiddle::Function.new(
  lib['DhcpSetOptionValues'],
  [
    Fiddle::TYPE_VOIDP,  # ServerIpAddress : LPCWSTR optional
    Fiddle::TYPE_VOIDP,  # ScopeInfo : DHCP_OPTION_SCOPE_INFO*
    Fiddle::TYPE_VOIDP,  # OptionValues : DHCP_OPTION_VALUE_ARRAY*
  ],
  -Fiddle::TYPE_INT)

#[link(name = "dhcpsapi")]
extern "system" {
    fn DhcpSetOptionValues(
        ServerIpAddress: *const u16,  // LPCWSTR optional
        ScopeInfo: *const DHCP_OPTION_SCOPE_INFO,  // DHCP_OPTION_SCOPE_INFO*
        OptionValues: *const DHCP_OPTION_VALUE_ARRAY  // DHCP_OPTION_VALUE_ARRAY*
    ) -> u32;
}
// crates: windows-sys provides ready-made bindings for this API.

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

#uselib "DHCPSAPI.dll"
#func global DhcpSetOptionValues "DhcpSetOptionValues" sptr, sptr, sptr
; DhcpSetOptionValues ServerIpAddress, varptr(ScopeInfo), varptr(OptionValues)   ; 戻り値は stat
; ServerIpAddress : LPCWSTR optional -> "sptr"
; ScopeInfo : DHCP_OPTION_SCOPE_INFO* -> "sptr"
; OptionValues : DHCP_OPTION_VALUE_ARRAY* -> "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 DhcpSetOptionValues "DhcpSetOptionValues" wstr, var, var
; res = DhcpSetOptionValues(ServerIpAddress, ScopeInfo, OptionValues)
; ServerIpAddress : LPCWSTR optional -> "wstr"
; ScopeInfo : DHCP_OPTION_SCOPE_INFO* -> "var"
; OptionValues : DHCP_OPTION_VALUE_ARRAY* -> "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 DhcpSetOptionValues(LPCWSTR ServerIpAddress, DHCP_OPTION_SCOPE_INFO* ScopeInfo, DHCP_OPTION_VALUE_ARRAY* OptionValues)
#uselib "DHCPSAPI.dll"
#cfunc global DhcpSetOptionValues "DhcpSetOptionValues" wstr, var, var
; res = DhcpSetOptionValues(ServerIpAddress, ScopeInfo, OptionValues)
; ServerIpAddress : LPCWSTR optional -> "wstr"
; ScopeInfo : DHCP_OPTION_SCOPE_INFO* -> "var"
; OptionValues : DHCP_OPTION_VALUE_ARRAY* -> "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。

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

var (
	dhcpsapi = windows.NewLazySystemDLL("DHCPSAPI.dll")
	procDhcpSetOptionValues = dhcpsapi.NewProc("DhcpSetOptionValues")
)

// ServerIpAddress (LPCWSTR optional), ScopeInfo (DHCP_OPTION_SCOPE_INFO*), OptionValues (DHCP_OPTION_VALUE_ARRAY*)
r1, _, err := procDhcpSetOptionValues.Call(
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(ServerIpAddress))),
	uintptr(ScopeInfo),
	uintptr(OptionValues),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // DWORD

function DhcpSetOptionValues(
  ServerIpAddress: PWideChar;   // LPCWSTR optional
  ScopeInfo: Pointer;   // DHCP_OPTION_SCOPE_INFO*
  OptionValues: Pointer   // DHCP_OPTION_VALUE_ARRAY*
): DWORD; stdcall;
  external 'DHCPSAPI.dll' name 'DhcpSetOptionValues';

result := DllCall("DHCPSAPI\DhcpSetOptionValues"
    , "WStr", ServerIpAddress   ; LPCWSTR optional
    , "Ptr", ScopeInfo   ; DHCP_OPTION_SCOPE_INFO*
    , "Ptr", OptionValues   ; DHCP_OPTION_VALUE_ARRAY*
    , "UInt")   ; return: DWORD

●DhcpSetOptionValues(ServerIpAddress, ScopeInfo, OptionValues) = DLL("DHCPSAPI.dll", "dword DhcpSetOptionValues(char*, void*, void*)")
# 呼び出し: DhcpSetOptionValues(ServerIpAddress, ScopeInfo, OptionValues)
# ServerIpAddress : LPCWSTR optional -> "char*"
# ScopeInfo : DHCP_OPTION_SCOPE_INFO* -> "void*"
# OptionValues : DHCP_OPTION_VALUE_ARRAY* -> "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)。