DhcpRegisterParamChange

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

DWORD DhcpRegisterParamChange(
    DWORD Flags,
    void* Reserved,   // optional
    LPWSTR AdapterName,
    DHCPCAPI_CLASSID* ClassId,
    DHCPCAPI_PARAMS_ARRAY Params,
    void* Handle
);

<DllImport("dhcpcsvc.dll", ExactSpelling:=True)>
Public Shared Function DhcpRegisterParamChange(
    Flags As UInteger,   ' DWORD
    Reserved As IntPtr,   ' void* optional
    <MarshalAs(UnmanagedType.LPWStr)> AdapterName As String,   ' LPWSTR
    ClassId As IntPtr,   ' DHCPCAPI_CLASSID* in/out
    Params As DHCPCAPI_PARAMS_ARRAY,   ' DHCPCAPI_PARAMS_ARRAY
    Handle As IntPtr   ' void* in/out
) As UInteger
End Function

' Flags : DWORD
' Reserved : void* optional
' AdapterName : LPWSTR
' ClassId : DHCPCAPI_CLASSID* in/out
' Params : DHCPCAPI_PARAMS_ARRAY
' Handle : void* in/out
Declare PtrSafe Function DhcpRegisterParamChange Lib "dhcpcsvc" ( _
    ByVal Flags As Long, _
    ByVal Reserved As LongPtr, _
    ByVal AdapterName As LongPtr, _
    ByVal ClassId As LongPtr, _
    ByVal Params As LongPtr, _
    ByVal Handle 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

DhcpRegisterParamChange = ctypes.windll.dhcpcsvc.DhcpRegisterParamChange
DhcpRegisterParamChange.restype = wintypes.DWORD
DhcpRegisterParamChange.argtypes = [
    wintypes.DWORD,  # Flags : DWORD
    ctypes.POINTER(None),  # Reserved : void* optional
    wintypes.LPCWSTR,  # AdapterName : LPWSTR
    ctypes.c_void_p,  # ClassId : DHCPCAPI_CLASSID* in/out
    DHCPCAPI_PARAMS_ARRAY,  # Params : DHCPCAPI_PARAMS_ARRAY
    ctypes.POINTER(None),  # Handle : void* in/out
]

require 'fiddle'
require 'fiddle/import'

lib = Fiddle.dlopen('dhcpcsvc.dll')
DhcpRegisterParamChange = Fiddle::Function.new(
  lib['DhcpRegisterParamChange'],
  [
    -Fiddle::TYPE_INT,  # Flags : DWORD
    Fiddle::TYPE_VOIDP,  # Reserved : void* optional
    Fiddle::TYPE_VOIDP,  # AdapterName : LPWSTR
    Fiddle::TYPE_VOIDP,  # ClassId : DHCPCAPI_CLASSID* in/out
    Fiddle::TYPE_VOIDP,  # Params : DHCPCAPI_PARAMS_ARRAY
    Fiddle::TYPE_VOIDP,  # Handle : void* in/out
  ],
  -Fiddle::TYPE_INT)

#[link(name = "dhcpcsvc")]
extern "system" {
    fn DhcpRegisterParamChange(
        Flags: u32,  // DWORD
        Reserved: *mut (),  // void* optional
        AdapterName: *mut u16,  // LPWSTR
        ClassId: *mut DHCPCAPI_CLASSID,  // DHCPCAPI_CLASSID* in/out
        Params: DHCPCAPI_PARAMS_ARRAY,  // DHCPCAPI_PARAMS_ARRAY
        Handle: *mut ()  // void* in/out
    ) -> u32;
}
// crates: windows-sys provides ready-made bindings for this API.

$sig = @"
[DllImport("dhcpcsvc.dll")]
public static extern uint DhcpRegisterParamChange(uint Flags, IntPtr Reserved, [MarshalAs(UnmanagedType.LPWStr)] string AdapterName, IntPtr ClassId, DHCPCAPI_PARAMS_ARRAY Params, IntPtr Handle);
"@
$api = Add-Type -MemberDefinition $sig -Name 'dhcpcsvc_DhcpRegisterParamChange' -Namespace Win32 -PassThru
# $api::DhcpRegisterParamChange(Flags, Reserved, AdapterName, ClassId, Params, Handle)

#uselib "dhcpcsvc.dll"
#func global DhcpRegisterParamChange "DhcpRegisterParamChange" sptr, sptr, sptr, sptr, sptr, sptr
; DhcpRegisterParamChange Flags, Reserved, AdapterName, varptr(ClassId), Params, Handle   ; 戻り値は stat
; Flags : DWORD -> "sptr"
; Reserved : void* optional -> "sptr"
; AdapterName : LPWSTR -> "sptr"
; ClassId : DHCPCAPI_CLASSID* in/out -> "sptr"
; Params : DHCPCAPI_PARAMS_ARRAY -> "sptr"
; Handle : void* in/out -> "sptr"
; ※値渡し構造体は直接渡せません。intにパック、または var で構造体変数を渡してください。
; ※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 "dhcpcsvc.dll"
#cfunc global DhcpRegisterParamChange "DhcpRegisterParamChange" int, sptr, wstr, var, int, sptr
; res = DhcpRegisterParamChange(Flags, Reserved, AdapterName, ClassId, Params, Handle)
; Flags : DWORD -> "int"
; Reserved : void* optional -> "sptr"
; AdapterName : LPWSTR -> "wstr"
; ClassId : DHCPCAPI_CLASSID* in/out -> "var"
; Params : DHCPCAPI_PARAMS_ARRAY -> "int"
; Handle : void* in/out -> "sptr"
; ※値渡し構造体は直接渡せません。intにパック、または var で構造体変数を渡してください。
; ※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 DhcpRegisterParamChange(DWORD Flags, void* Reserved, LPWSTR AdapterName, DHCPCAPI_CLASSID* ClassId, DHCPCAPI_PARAMS_ARRAY Params, void* Handle)
#uselib "dhcpcsvc.dll"
#cfunc global DhcpRegisterParamChange "DhcpRegisterParamChange" int, intptr, wstr, var, int, intptr
; res = DhcpRegisterParamChange(Flags, Reserved, AdapterName, ClassId, Params, Handle)
; Flags : DWORD -> "int"
; Reserved : void* optional -> "intptr"
; AdapterName : LPWSTR -> "wstr"
; ClassId : DHCPCAPI_CLASSID* in/out -> "var"
; Params : DHCPCAPI_PARAMS_ARRAY -> "int"
; Handle : void* in/out -> "intptr"
; ※値渡し構造体は直接渡せません。intにパック、または var で構造体変数を渡してください。
; ※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 (
	dhcpcsvc = windows.NewLazySystemDLL("dhcpcsvc.dll")
	procDhcpRegisterParamChange = dhcpcsvc.NewProc("DhcpRegisterParamChange")
)

// Flags (DWORD), Reserved (void* optional), AdapterName (LPWSTR), ClassId (DHCPCAPI_CLASSID* in/out), Params (DHCPCAPI_PARAMS_ARRAY), Handle (void* in/out)
r1, _, err := procDhcpRegisterParamChange.Call(
	uintptr(Flags),
	uintptr(Reserved),
	uintptr(unsafe.Pointer(windows.StringToUTF16Ptr(AdapterName))),
	uintptr(ClassId),
	uintptr(Params),
	uintptr(Handle),
)
_ = err  // syscall.Errno (valid when the call sets last-error)
_ = r1   // DWORD

function DhcpRegisterParamChange(
  Flags: DWORD;   // DWORD
  Reserved: Pointer;   // void* optional
  AdapterName: PWideChar;   // LPWSTR
  ClassId: Pointer;   // DHCPCAPI_CLASSID* in/out
  Params: DHCPCAPI_PARAMS_ARRAY;   // DHCPCAPI_PARAMS_ARRAY
  Handle: Pointer   // void* in/out
): DWORD; stdcall;
  external 'dhcpcsvc.dll' name 'DhcpRegisterParamChange';

result := DllCall("dhcpcsvc\DhcpRegisterParamChange"
    , "UInt", Flags   ; DWORD
    , "Ptr", Reserved   ; void* optional
    , "WStr", AdapterName   ; LPWSTR
    , "Ptr", ClassId   ; DHCPCAPI_CLASSID* in/out
    , "Ptr", Params   ; DHCPCAPI_PARAMS_ARRAY
    , "Ptr", Handle   ; void* in/out
    , "UInt")   ; return: DWORD

●DhcpRegisterParamChange(Flags, Reserved, AdapterName, ClassId, Params, Handle) = DLL("dhcpcsvc.dll", "dword DhcpRegisterParamChange(dword, void*, char*, void*, void*, void*)")
# 呼び出し: DhcpRegisterParamChange(Flags, Reserved, AdapterName, ClassId, Params, Handle)
# Flags : DWORD -> "dword"
# Reserved : void* optional -> "void*"
# AdapterName : LPWSTR -> "char*"
# ClassId : DHCPCAPI_CLASSID* in/out -> "void*"
# Params : DHCPCAPI_PARAMS_ARRAY -> "void*"
# Handle : void* in/out -> "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)。