DhcpV4SetPolicyEnforcement

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

DWORD DhcpV4SetPolicyEnforcement(
    LPWSTR ServerIpAddress,   // optional
    BOOL fGlobalPolicy,
    DWORD SubnetAddress,
    BOOL Enable
);

<DllImport("DHCPSAPI.dll", ExactSpelling:=True)>
Public Shared Function DhcpV4SetPolicyEnforcement(
    <MarshalAs(UnmanagedType.LPWStr)> ServerIpAddress As String,   ' LPWSTR optional
    fGlobalPolicy As Boolean,   ' BOOL
    SubnetAddress As UInteger,   ' DWORD
    Enable As Boolean   ' BOOL
) As UInteger
End Function

' ServerIpAddress : LPWSTR optional
' fGlobalPolicy : BOOL
' SubnetAddress : DWORD
' Enable : BOOL
Declare PtrSafe Function DhcpV4SetPolicyEnforcement Lib "dhcpsapi" ( _
    ByVal ServerIpAddress As LongPtr, _
    ByVal fGlobalPolicy As Long, _
    ByVal SubnetAddress As Long, _
    ByVal Enable 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

DhcpV4SetPolicyEnforcement = ctypes.windll.dhcpsapi.DhcpV4SetPolicyEnforcement
DhcpV4SetPolicyEnforcement.restype = wintypes.DWORD
DhcpV4SetPolicyEnforcement.argtypes = [
    wintypes.LPCWSTR,  # ServerIpAddress : LPWSTR optional
    wintypes.BOOL,  # fGlobalPolicy : BOOL
    wintypes.DWORD,  # SubnetAddress : DWORD
    wintypes.BOOL,  # Enable : BOOL
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('DHCPSAPI.dll')
DhcpV4SetPolicyEnforcement = Fiddle::Function.new(
  lib['DhcpV4SetPolicyEnforcement'],
  [
    Fiddle::TYPE_VOIDP,  # ServerIpAddress : LPWSTR optional
    Fiddle::TYPE_INT,  # fGlobalPolicy : BOOL
    -Fiddle::TYPE_INT,  # SubnetAddress : DWORD
    Fiddle::TYPE_INT,  # Enable : BOOL
  ],
  -Fiddle::TYPE_INT)

#[link(name = "dhcpsapi")]
extern "system" {
    fn DhcpV4SetPolicyEnforcement(
        ServerIpAddress: *mut u16,  // LPWSTR optional
        fGlobalPolicy: i32,  // BOOL
        SubnetAddress: u32,  // DWORD
        Enable: i32  // BOOL
    ) -> u32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("DHCPSAPI.dll")]
public static extern uint DhcpV4SetPolicyEnforcement([MarshalAs(UnmanagedType.LPWStr)] string ServerIpAddress, bool fGlobalPolicy, uint SubnetAddress, bool Enable);
"@
$api = Add-Type -MemberDefinition $sig -Name 'DHCPSAPI_DhcpV4SetPolicyEnforcement' -Namespace Win32 -PassThru
# $api::DhcpV4SetPolicyEnforcement(ServerIpAddress, fGlobalPolicy, SubnetAddress, Enable)

#uselib "DHCPSAPI.dll"
#func global DhcpV4SetPolicyEnforcement "DhcpV4SetPolicyEnforcement" sptr, sptr, sptr, sptr
; DhcpV4SetPolicyEnforcement ServerIpAddress, fGlobalPolicy, SubnetAddress, Enable   ; 戻り値は stat
; ServerIpAddress : LPWSTR optional -> "sptr"
; fGlobalPolicy : BOOL -> "sptr"
; SubnetAddress : DWORD -> "sptr"
; Enable : 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 DhcpV4SetPolicyEnforcement "DhcpV4SetPolicyEnforcement" wstr, int, int, int
; res = DhcpV4SetPolicyEnforcement(ServerIpAddress, fGlobalPolicy, SubnetAddress, Enable)
; ServerIpAddress : LPWSTR optional -> "wstr"
; fGlobalPolicy : BOOL -> "int"
; SubnetAddress : DWORD -> "int"
; Enable : BOOL -> "int"

; DWORD DhcpV4SetPolicyEnforcement(LPWSTR ServerIpAddress, BOOL fGlobalPolicy, DWORD SubnetAddress, BOOL Enable)
#uselib "DHCPSAPI.dll"
#cfunc global DhcpV4SetPolicyEnforcement "DhcpV4SetPolicyEnforcement" wstr, int, int, int
; res = DhcpV4SetPolicyEnforcement(ServerIpAddress, fGlobalPolicy, SubnetAddress, Enable)
; ServerIpAddress : LPWSTR optional -> "wstr"
; fGlobalPolicy : BOOL -> "int"
; SubnetAddress : DWORD -> "int"
; Enable : BOOL -> "int"

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

var (
	dhcpsapi = windows.NewLazySystemDLL("DHCPSAPI.dll")
	procDhcpV4SetPolicyEnforcement = dhcpsapi.NewProc("DhcpV4SetPolicyEnforcement")
)

// ServerIpAddress (LPWSTR optional), fGlobalPolicy (BOOL), SubnetAddress (DWORD), Enable (BOOL)
r1, _, err := procDhcpV4SetPolicyEnforcement.Call(
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(ServerIpAddress))),
	uintptr(fGlobalPolicy),
	uintptr(SubnetAddress),
	uintptr(Enable),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // DWORD

function DhcpV4SetPolicyEnforcement(
  ServerIpAddress: PWideChar;   // LPWSTR optional
  fGlobalPolicy: BOOL;   // BOOL
  SubnetAddress: DWORD;   // DWORD
  Enable: BOOL   // BOOL
): DWORD; stdcall;
  external 'DHCPSAPI.dll' name 'DhcpV4SetPolicyEnforcement';

result := DllCall("DHCPSAPI\DhcpV4SetPolicyEnforcement"
    , "WStr", ServerIpAddress   ; LPWSTR optional
    , "Int", fGlobalPolicy   ; BOOL
    , "UInt", SubnetAddress   ; DWORD
    , "Int", Enable   ; BOOL
    , "UInt")   ; return: DWORD

●DhcpV4SetPolicyEnforcement(ServerIpAddress, fGlobalPolicy, SubnetAddress, Enable) = DLL("DHCPSAPI.dll", "dword DhcpV4SetPolicyEnforcement(char*, bool, dword, bool)")
# 呼び出し: DhcpV4SetPolicyEnforcement(ServerIpAddress, fGlobalPolicy, SubnetAddress, Enable)
# ServerIpAddress : LPWSTR optional -> "char*"
# fGlobalPolicy : BOOL -> "bool"
# SubnetAddress : DWORD -> "dword"
# Enable : 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)。