NCB

using System;
using System.Runtime.InteropServices;

[StructLayout(LayoutKind.Sequential, CharSet = CharSet.Unicode)]
public struct NCB
{
    public byte ncb_command;
    public byte ncb_retcode;
    public byte ncb_lsn;
    public byte ncb_num;
    public IntPtr ncb_buffer;
    public ushort ncb_length;
    [MarshalAs(UnmanagedType.ByValArray, SizeConst = 16)] public byte[] ncb_callname;
    [MarshalAs(UnmanagedType.ByValArray, SizeConst = 16)] public byte[] ncb_name;
    public byte ncb_rto;
    public byte ncb_sto;
    public IntPtr ncb_post;
    public byte ncb_lana_num;
    public byte ncb_cmd_cplt;
    [MarshalAs(UnmanagedType.ByValArray, SizeConst = 10)] public byte[] ncb_reserve;
    public IntPtr ncb_event;
}

Imports System.Runtime.InteropServices

<StructLayout(LayoutKind.Sequential, CharSet:=CharSet.Unicode)>
Public Structure NCB
    Public ncb_command As Byte
    Public ncb_retcode As Byte
    Public ncb_lsn As Byte
    Public ncb_num As Byte
    Public ncb_buffer As IntPtr
    Public ncb_length As UShort
    <MarshalAs(UnmanagedType.ByValArray, SizeConst:=16)> Public ncb_callname() As Byte
    <MarshalAs(UnmanagedType.ByValArray, SizeConst:=16)> Public ncb_name() As Byte
    Public ncb_rto As Byte
    Public ncb_sto As Byte
    Public ncb_post As IntPtr
    Public ncb_lana_num As Byte
    Public ncb_cmd_cplt As Byte
    <MarshalAs(UnmanagedType.ByValArray, SizeConst:=10)> Public ncb_reserve() As Byte
    Public ncb_event As IntPtr
End Structure

import ctypes
from ctypes import wintypes

class NCB(ctypes.Structure):
    _fields_ = [
        ("ncb_command", ctypes.c_ubyte),
        ("ncb_retcode", ctypes.c_ubyte),
        ("ncb_lsn", ctypes.c_ubyte),
        ("ncb_num", ctypes.c_ubyte),
        ("ncb_buffer", ctypes.c_void_p),
        ("ncb_length", ctypes.c_ushort),
        ("ncb_callname", ctypes.c_ubyte * 16),
        ("ncb_name", ctypes.c_ubyte * 16),
        ("ncb_rto", ctypes.c_ubyte),
        ("ncb_sto", ctypes.c_ubyte),
        ("ncb_post", ctypes.c_ssize_t),
        ("ncb_lana_num", ctypes.c_ubyte),
        ("ncb_cmd_cplt", ctypes.c_ubyte),
        ("ncb_reserve", ctypes.c_ubyte * 10),
        ("ncb_event", ctypes.c_void_p),
    ]

#[repr(C)]
pub struct NCB {
    pub ncb_command: u8,
    pub ncb_retcode: u8,
    pub ncb_lsn: u8,
    pub ncb_num: u8,
    pub ncb_buffer: *mut core::ffi::c_void,
    pub ncb_length: u16,
    pub ncb_callname: [u8; 16],
    pub ncb_name: [u8; 16],
    pub ncb_rto: u8,
    pub ncb_sto: u8,
    pub ncb_post: isize,
    pub ncb_lana_num: u8,
    pub ncb_cmd_cplt: u8,
    pub ncb_reserve: [u8; 10],
    pub ncb_event: *mut core::ffi::c_void,
}

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

type NCB struct {
	ncb_command byte
	ncb_retcode byte
	ncb_lsn byte
	ncb_num byte
	ncb_buffer uintptr
	ncb_length uint16
	ncb_callname [16]byte
	ncb_name [16]byte
	ncb_rto byte
	ncb_sto byte
	ncb_post uintptr
	ncb_lana_num byte
	ncb_cmd_cplt byte
	ncb_reserve [10]byte
	ncb_event uintptr
}

type
  NCB = record
    ncb_command: Byte;
    ncb_retcode: Byte;
    ncb_lsn: Byte;
    ncb_num: Byte;
    ncb_buffer: Pointer;
    ncb_length: Word;
    ncb_callname: array[0..15] of Byte;
    ncb_name: array[0..15] of Byte;
    ncb_rto: Byte;
    ncb_sto: Byte;
    ncb_post: NativeInt;
    ncb_lana_num: Byte;
    ncb_cmd_cplt: Byte;
    ncb_reserve: array[0..9] of Byte;
    ncb_event: Pointer;
  end;

const NCB = extern struct {
    ncb_command: u8,
    ncb_retcode: u8,
    ncb_lsn: u8,
    ncb_num: u8,
    ncb_buffer: ?*anyopaque,
    ncb_length: u16,
    ncb_callname: [16]u8,
    ncb_name: [16]u8,
    ncb_rto: u8,
    ncb_sto: u8,
    ncb_post: isize,
    ncb_lana_num: u8,
    ncb_cmd_cplt: u8,
    ncb_reserve: [10]u8,
    ncb_event: ?*anyopaque,
};

type
  NCB {.bycopy.} = object
    ncb_command: uint8
    ncb_retcode: uint8
    ncb_lsn: uint8
    ncb_num: uint8
    ncb_buffer: pointer
    ncb_length: uint16
    ncb_callname: array[16, uint8]
    ncb_name: array[16, uint8]
    ncb_rto: uint8
    ncb_sto: uint8
    ncb_post: int
    ncb_lana_num: uint8
    ncb_cmd_cplt: uint8
    ncb_reserve: array[10, uint8]
    ncb_event: pointer

struct NCB
{
    ubyte ncb_command;
    ubyte ncb_retcode;
    ubyte ncb_lsn;
    ubyte ncb_num;
    void* ncb_buffer;
    ushort ncb_length;
    ubyte[16] ncb_callname;
    ubyte[16] ncb_name;
    ubyte ncb_rto;
    ubyte ncb_sto;
    ptrdiff_t ncb_post;
    ubyte ncb_lana_num;
    ubyte ncb_cmd_cplt;
    ubyte[10] ncb_reserve;
    void* ncb_event;
}