DhcpSetSubnetDelayOffer

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

DWORD DhcpSetSubnetDelayOffer(
    LPWSTR ServerIpAddress,   // optional
    DWORD SubnetAddress,
    WORD TimeDelayInMilliseconds
);

<DllImport("DHCPSAPI.dll", ExactSpelling:=True)>
Public Shared Function DhcpSetSubnetDelayOffer(
    <MarshalAs(UnmanagedType.LPWStr)> ServerIpAddress As String,   ' LPWSTR optional
    SubnetAddress As UInteger,   ' DWORD
    TimeDelayInMilliseconds As UShort   ' WORD
) As UInteger
End Function

' ServerIpAddress : LPWSTR optional
' SubnetAddress : DWORD
' TimeDelayInMilliseconds : WORD
Declare PtrSafe Function DhcpSetSubnetDelayOffer Lib "dhcpsapi" ( _
    ByVal ServerIpAddress As LongPtr, _
    ByVal SubnetAddress As Long, _
    ByVal TimeDelayInMilliseconds As Integer) As Long
' VBA7前提(PtrSafe)。32bit Office では LongPtr→Long。Integer=16bit / Long=32bit / LongLong=64bit。

import ctypes
from ctypes import wintypes

DhcpSetSubnetDelayOffer = ctypes.windll.dhcpsapi.DhcpSetSubnetDelayOffer
DhcpSetSubnetDelayOffer.restype = wintypes.DWORD
DhcpSetSubnetDelayOffer.argtypes = [
    wintypes.LPCWSTR,  # ServerIpAddress : LPWSTR optional
    wintypes.DWORD,  # SubnetAddress : DWORD
    ctypes.c_ushort,  # TimeDelayInMilliseconds : WORD
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('DHCPSAPI.dll')
DhcpSetSubnetDelayOffer = Fiddle::Function.new(
  lib['DhcpSetSubnetDelayOffer'],
  [
    Fiddle::TYPE_VOIDP,  # ServerIpAddress : LPWSTR optional
    -Fiddle::TYPE_INT,  # SubnetAddress : DWORD
    -Fiddle::TYPE_SHORT,  # TimeDelayInMilliseconds : WORD
  ],
  -Fiddle::TYPE_INT)

#[link(name = "dhcpsapi")]
extern "system" {
    fn DhcpSetSubnetDelayOffer(
        ServerIpAddress: *mut u16,  // LPWSTR optional
        SubnetAddress: u32,  // DWORD
        TimeDelayInMilliseconds: u16  // WORD
    ) -> u32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("DHCPSAPI.dll")]
public static extern uint DhcpSetSubnetDelayOffer([MarshalAs(UnmanagedType.LPWStr)] string ServerIpAddress, uint SubnetAddress, ushort TimeDelayInMilliseconds);
"@
$api = Add-Type -MemberDefinition $sig -Name 'DHCPSAPI_DhcpSetSubnetDelayOffer' -Namespace Win32 -PassThru
# $api::DhcpSetSubnetDelayOffer(ServerIpAddress, SubnetAddress, TimeDelayInMilliseconds)

#uselib "DHCPSAPI.dll"
#func global DhcpSetSubnetDelayOffer "DhcpSetSubnetDelayOffer" sptr, sptr, sptr
; DhcpSetSubnetDelayOffer ServerIpAddress, SubnetAddress, TimeDelayInMilliseconds   ; 戻り値は stat
; ServerIpAddress : LPWSTR optional -> "sptr"
; SubnetAddress : DWORD -> "sptr"
; TimeDelayInMilliseconds : WORD -> "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 DhcpSetSubnetDelayOffer "DhcpSetSubnetDelayOffer" wstr, int, int
; res = DhcpSetSubnetDelayOffer(ServerIpAddress, SubnetAddress, TimeDelayInMilliseconds)
; ServerIpAddress : LPWSTR optional -> "wstr"
; SubnetAddress : DWORD -> "int"
; TimeDelayInMilliseconds : WORD -> "int"

; DWORD DhcpSetSubnetDelayOffer(LPWSTR ServerIpAddress, DWORD SubnetAddress, WORD TimeDelayInMilliseconds)
#uselib "DHCPSAPI.dll"
#cfunc global DhcpSetSubnetDelayOffer "DhcpSetSubnetDelayOffer" wstr, int, int
; res = DhcpSetSubnetDelayOffer(ServerIpAddress, SubnetAddress, TimeDelayInMilliseconds)
; ServerIpAddress : LPWSTR optional -> "wstr"
; SubnetAddress : DWORD -> "int"
; TimeDelayInMilliseconds : WORD -> "int"

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

var (
	dhcpsapi = windows.NewLazySystemDLL("DHCPSAPI.dll")
	procDhcpSetSubnetDelayOffer = dhcpsapi.NewProc("DhcpSetSubnetDelayOffer")
)

// ServerIpAddress (LPWSTR optional), SubnetAddress (DWORD), TimeDelayInMilliseconds (WORD)
r1, _, err := procDhcpSetSubnetDelayOffer.Call(
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(ServerIpAddress))),
	uintptr(SubnetAddress),
	uintptr(TimeDelayInMilliseconds),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // DWORD

function DhcpSetSubnetDelayOffer(
  ServerIpAddress: PWideChar;   // LPWSTR optional
  SubnetAddress: DWORD;   // DWORD
  TimeDelayInMilliseconds: Word   // WORD
): DWORD; stdcall;
  external 'DHCPSAPI.dll' name 'DhcpSetSubnetDelayOffer';

result := DllCall("DHCPSAPI\DhcpSetSubnetDelayOffer"
    , "WStr", ServerIpAddress   ; LPWSTR optional
    , "UInt", SubnetAddress   ; DWORD
    , "UShort", TimeDelayInMilliseconds   ; WORD
    , "UInt")   ; return: DWORD

●DhcpSetSubnetDelayOffer(ServerIpAddress, SubnetAddress, TimeDelayInMilliseconds) = DLL("DHCPSAPI.dll", "dword DhcpSetSubnetDelayOffer(char*, dword, int)")
# 呼び出し: DhcpSetSubnetDelayOffer(ServerIpAddress, SubnetAddress, TimeDelayInMilliseconds)
# ServerIpAddress : LPWSTR optional -> "char*"
# SubnetAddress : DWORD -> "dword"
# TimeDelayInMilliseconds : WORD -> "int"
# 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)。