ITEM_INFO

using System;
using System.Runtime.InteropServices;

[StructLayout(LayoutKind.Sequential, CharSet = CharSet.Unicode)]
public struct ITEM_INFO
{
    public uint dwSize;
    public IntPtr pcwszFromEMail;
    public IntPtr pcwszApplicationName;
    public IntPtr pcwszCatalogName;
    public IntPtr pcwszContentClass;
}

Imports System.Runtime.InteropServices

<StructLayout(LayoutKind.Sequential, CharSet:=CharSet.Unicode)>
Public Structure ITEM_INFO
    Public dwSize As UInteger
    Public pcwszFromEMail As IntPtr
    Public pcwszApplicationName As IntPtr
    Public pcwszCatalogName As IntPtr
    Public pcwszContentClass As IntPtr
End Structure

import ctypes
from ctypes import wintypes

class ITEM_INFO(ctypes.Structure):
    _fields_ = [
        ("dwSize", wintypes.DWORD),
        ("pcwszFromEMail", ctypes.c_void_p),
        ("pcwszApplicationName", ctypes.c_void_p),
        ("pcwszCatalogName", ctypes.c_void_p),
        ("pcwszContentClass", ctypes.c_void_p),
    ]

#[repr(C)]
pub struct ITEM_INFO {
    pub dwSize: u32,
    pub pcwszFromEMail: *mut core::ffi::c_void,
    pub pcwszApplicationName: *mut core::ffi::c_void,
    pub pcwszCatalogName: *mut core::ffi::c_void,
    pub pcwszContentClass: *mut core::ffi::c_void,
}

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

type ITEM_INFO struct {
	dwSize uint32
	pcwszFromEMail uintptr
	pcwszApplicationName uintptr
	pcwszCatalogName uintptr
	pcwszContentClass uintptr
}

type
  ITEM_INFO = record
    dwSize: DWORD;
    pcwszFromEMail: Pointer;
    pcwszApplicationName: Pointer;
    pcwszCatalogName: Pointer;
    pcwszContentClass: Pointer;
  end;

const ITEM_INFO = extern struct {
    dwSize: u32,
    pcwszFromEMail: ?*anyopaque,
    pcwszApplicationName: ?*anyopaque,
    pcwszCatalogName: ?*anyopaque,
    pcwszContentClass: ?*anyopaque,
};

type
  ITEM_INFO {.bycopy.} = object
    dwSize: uint32
    pcwszFromEMail: pointer
    pcwszApplicationName: pointer
    pcwszCatalogName: pointer
    pcwszContentClass: pointer

struct ITEM_INFO
{
    uint dwSize;
    void* pcwszFromEMail;
    void* pcwszApplicationName;
    void* pcwszCatalogName;
    void* pcwszContentClass;
}