OIEXT

using System;
using System.Runtime.InteropServices;

[StructLayout(LayoutKind.Sequential, CharSet = CharSet.Unicode)]
public struct OIEXT
{
    public ushort cbSize;
    public ushort Flags;
    public IntPtr hInstCaller;
    public IntPtr pHelpFile;
    [MarshalAs(UnmanagedType.ByValArray, SizeConst = 4)] public UIntPtr[] dwReserved;
}

Imports System.Runtime.InteropServices

<StructLayout(LayoutKind.Sequential, CharSet:=CharSet.Unicode)>
Public Structure OIEXT
    Public cbSize As UShort
    Public Flags As UShort
    Public hInstCaller As IntPtr
    Public pHelpFile As IntPtr
    <MarshalAs(UnmanagedType.ByValArray, SizeConst:=4)> Public dwReserved() As UIntPtr
End Structure

import ctypes
from ctypes import wintypes

class OIEXT(ctypes.Structure):
    _fields_ = [
        ("cbSize", ctypes.c_ushort),
        ("Flags", ctypes.c_ushort),
        ("hInstCaller", ctypes.c_void_p),
        ("pHelpFile", ctypes.c_void_p),
        ("dwReserved", ctypes.c_size_t * 4),
    ]

#[repr(C)]
pub struct OIEXT {
    pub cbSize: u16,
    pub Flags: u16,
    pub hInstCaller: *mut core::ffi::c_void,
    pub pHelpFile: *mut core::ffi::c_void,
    pub dwReserved: [usize; 4],
}

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

type OIEXT struct {
	cbSize uint16
	Flags uint16
	hInstCaller uintptr
	pHelpFile uintptr
	dwReserved [4]uintptr
}

type
  OIEXT = record
    cbSize: Word;
    Flags: Word;
    hInstCaller: Pointer;
    pHelpFile: Pointer;
    dwReserved: array[0..3] of NativeUInt;
  end;

const OIEXT = extern struct {
    cbSize: u16,
    Flags: u16,
    hInstCaller: ?*anyopaque,
    pHelpFile: ?*anyopaque,
    dwReserved: [4]usize,
};

type
  OIEXT {.bycopy.} = object
    cbSize: uint16
    Flags: uint16
    hInstCaller: pointer
    pHelpFile: pointer
    dwReserved: array[4, uint]

struct OIEXT
{
    ushort cbSize;
    ushort Flags;
    void* hInstCaller;
    void* pHelpFile;
    size_t[4] dwReserved;
}