USERDATA

using System;
using System.Runtime.InteropServices;

[StructLayout(LayoutKind.Sequential, CharSet = CharSet.Unicode)]
public struct USERDATA
{
    public uint dwSize;
    public UIntPtr dwItemID;
    public IntPtr pKeyWordName;
    [MarshalAs(UnmanagedType.ByValArray, SizeConst = 8)] public uint[] dwReserved;
}

Imports System.Runtime.InteropServices

<StructLayout(LayoutKind.Sequential, CharSet:=CharSet.Unicode)>
Public Structure USERDATA
    Public dwSize As UInteger
    Public dwItemID As UIntPtr
    Public pKeyWordName As IntPtr
    <MarshalAs(UnmanagedType.ByValArray, SizeConst:=8)> Public dwReserved() As UInteger
End Structure

import ctypes
from ctypes import wintypes

class USERDATA(ctypes.Structure):
    _fields_ = [
        ("dwSize", wintypes.DWORD),
        ("dwItemID", ctypes.c_size_t),
        ("pKeyWordName", ctypes.c_void_p),
        ("dwReserved", wintypes.DWORD * 8),
    ]

#[repr(C)]
pub struct USERDATA {
    pub dwSize: u32,
    pub dwItemID: usize,
    pub pKeyWordName: *mut core::ffi::c_void,
    pub dwReserved: [u32; 8],
}

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

type USERDATA struct {
	dwSize uint32
	dwItemID uintptr
	pKeyWordName uintptr
	dwReserved [8]uint32
}

type
  USERDATA = record
    dwSize: DWORD;
    dwItemID: NativeUInt;
    pKeyWordName: Pointer;
    dwReserved: array[0..7] of DWORD;
  end;

const USERDATA = extern struct {
    dwSize: u32,
    dwItemID: usize,
    pKeyWordName: ?*anyopaque,
    dwReserved: [8]u32,
};

type
  USERDATA {.bycopy.} = object
    dwSize: uint32
    dwItemID: uint
    pKeyWordName: pointer
    dwReserved: array[8, uint32]

struct USERDATA
{
    uint dwSize;
    size_t dwItemID;
    void* pKeyWordName;
    uint[8] dwReserved;
}