L2_NOTIFICATION_DATA

using System;
using System.Runtime.InteropServices;

[StructLayout(LayoutKind.Sequential, CharSet = CharSet.Unicode)]
public struct L2_NOTIFICATION_DATA
{
    public uint NotificationSource;
    public uint NotificationCode;
    public Guid InterfaceGuid;
    public uint dwDataSize;
    public IntPtr pData;
}

Imports System.Runtime.InteropServices

<StructLayout(LayoutKind.Sequential, CharSet:=CharSet.Unicode)>
Public Structure L2_NOTIFICATION_DATA
    Public NotificationSource As UInteger
    Public NotificationCode As UInteger
    Public InterfaceGuid As Guid
    Public dwDataSize As UInteger
    Public pData As IntPtr
End Structure

import ctypes
from ctypes import wintypes

class L2_NOTIFICATION_DATA(ctypes.Structure):
    _fields_ = [
        ("NotificationSource", wintypes.DWORD),
        ("NotificationCode", wintypes.DWORD),
        ("InterfaceGuid", GUID),
        ("dwDataSize", wintypes.DWORD),
        ("pData", ctypes.c_void_p),
    ]

#[repr(C)]
pub struct L2_NOTIFICATION_DATA {
    pub NotificationSource: u32,
    pub NotificationCode: u32,
    pub InterfaceGuid: GUID,
    pub dwDataSize: u32,
    pub pData: *mut core::ffi::c_void,
}

import "golang.org/x/sys/windows"

type L2_NOTIFICATION_DATA struct {
	NotificationSource uint32
	NotificationCode uint32
	InterfaceGuid windows.GUID
	dwDataSize uint32
	pData uintptr
}

type
  L2_NOTIFICATION_DATA = record
    NotificationSource: DWORD;
    NotificationCode: DWORD;
    InterfaceGuid: TGUID;
    dwDataSize: DWORD;
    pData: Pointer;
  end;

const L2_NOTIFICATION_DATA = extern struct {
    NotificationSource: u32,
    NotificationCode: u32,
    InterfaceGuid: GUID,
    dwDataSize: u32,
    pData: ?*anyopaque,
};

type
  L2_NOTIFICATION_DATA {.bycopy.} = object
    NotificationSource: uint32
    NotificationCode: uint32
    InterfaceGuid: GUID
    dwDataSize: uint32
    pData: pointer

struct L2_NOTIFICATION_DATA
{
    uint NotificationSource;
    uint NotificationCode;
    GUID InterfaceGuid;
    uint dwDataSize;
    void* pData;
}