MapiFileDesc

using System;
using System.Runtime.InteropServices;

[StructLayout(LayoutKind.Sequential, CharSet = CharSet.Unicode)]
public struct MapiFileDesc
{
    public uint ulReserved;
    public uint flFlags;
    public uint nPosition;
    public IntPtr lpszPathName;
    public IntPtr lpszFileName;
    public IntPtr lpFileType;
}

Imports System.Runtime.InteropServices

<StructLayout(LayoutKind.Sequential, CharSet:=CharSet.Unicode)>
Public Structure MapiFileDesc
    Public ulReserved As UInteger
    Public flFlags As UInteger
    Public nPosition As UInteger
    Public lpszPathName As IntPtr
    Public lpszFileName As IntPtr
    Public lpFileType As IntPtr
End Structure

import ctypes
from ctypes import wintypes

class MapiFileDesc(ctypes.Structure):
    _fields_ = [
        ("ulReserved", wintypes.DWORD),
        ("flFlags", wintypes.DWORD),
        ("nPosition", wintypes.DWORD),
        ("lpszPathName", ctypes.c_void_p),
        ("lpszFileName", ctypes.c_void_p),
        ("lpFileType", ctypes.c_void_p),
    ]

#[repr(C)]
pub struct MapiFileDesc {
    pub ulReserved: u32,
    pub flFlags: u32,
    pub nPosition: u32,
    pub lpszPathName: *mut core::ffi::c_void,
    pub lpszFileName: *mut core::ffi::c_void,
    pub lpFileType: *mut core::ffi::c_void,
}

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

type MapiFileDesc struct {
	ulReserved uint32
	flFlags uint32
	nPosition uint32
	lpszPathName uintptr
	lpszFileName uintptr
	lpFileType uintptr
}

type
  MapiFileDesc = record
    ulReserved: DWORD;
    flFlags: DWORD;
    nPosition: DWORD;
    lpszPathName: Pointer;
    lpszFileName: Pointer;
    lpFileType: Pointer;
  end;

const MapiFileDesc = extern struct {
    ulReserved: u32,
    flFlags: u32,
    nPosition: u32,
    lpszPathName: ?*anyopaque,
    lpszFileName: ?*anyopaque,
    lpFileType: ?*anyopaque,
};

type
  MapiFileDesc {.bycopy.} = object
    ulReserved: uint32
    flFlags: uint32
    nPosition: uint32
    lpszPathName: pointer
    lpszFileName: pointer
    lpFileType: pointer

struct MapiFileDesc
{
    uint ulReserved;
    uint flFlags;
    uint nPosition;
    void* lpszPathName;
    void* lpszFileName;
    void* lpFileType;
}