OVERLAPPED

using System;
using System.Runtime.InteropServices;

[StructLayout(LayoutKind.Sequential, CharSet = CharSet.Unicode)]
public struct OVERLAPPED
{
    public UIntPtr Internal;
    public UIntPtr InternalHigh;
    public _Anonymous_e__Union Anonymous;
    public IntPtr hEvent;
}

Imports System.Runtime.InteropServices

<StructLayout(LayoutKind.Sequential, CharSet:=CharSet.Unicode)>
Public Structure OVERLAPPED
    Public Internal As UIntPtr
    Public InternalHigh As UIntPtr
    Public Anonymous As _Anonymous_e__Union
    Public hEvent As IntPtr
End Structure

import ctypes
from ctypes import wintypes

class OVERLAPPED(ctypes.Structure):
    _fields_ = [
        ("Internal", ctypes.c_size_t),
        ("InternalHigh", ctypes.c_size_t),
        ("Anonymous", _Anonymous_e__Union),
        ("hEvent", ctypes.c_void_p),
    ]

#[repr(C)]
pub struct OVERLAPPED {
    pub Internal: usize,
    pub InternalHigh: usize,
    pub Anonymous: _Anonymous_e__Union,
    pub hEvent: *mut core::ffi::c_void,
}

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

type OVERLAPPED struct {
	Internal uintptr
	InternalHigh uintptr
	Anonymous _Anonymous_e__Union
	hEvent uintptr
}

type
  OVERLAPPED = record
    Internal: NativeUInt;
    InternalHigh: NativeUInt;
    Anonymous: _Anonymous_e__Union;
    hEvent: Pointer;
  end;

const OVERLAPPED = extern struct {
    Internal: usize,
    InternalHigh: usize,
    Anonymous: _Anonymous_e__Union,
    hEvent: ?*anyopaque,
};

type
  OVERLAPPED {.bycopy.} = object
    Internal: uint
    InternalHigh: uint
    Anonymous: _Anonymous_e__Union
    hEvent: pointer

struct OVERLAPPED
{
    size_t Internal;
    size_t InternalHigh;
    _Anonymous_e__Union Anonymous;
    void* hEvent;
}