TVITEMEXW

using System;
using System.Runtime.InteropServices;

[StructLayout(LayoutKind.Sequential, CharSet = CharSet.Unicode)]
public struct TVITEMEXW
{
    public uint mask;
    public IntPtr hItem;
    public uint state;
    public uint stateMask;
    public IntPtr pszText;
    public int cchTextMax;
    public int iImage;
    public int iSelectedImage;
    public int cChildren;
    public IntPtr lParam;
    public int iIntegral;
    public uint uStateEx;
    public IntPtr hwnd;
    public int iExpandedImage;
    public int iReserved;
}

Imports System.Runtime.InteropServices

<StructLayout(LayoutKind.Sequential, CharSet:=CharSet.Unicode)>
Public Structure TVITEMEXW
    Public mask As UInteger
    Public hItem As IntPtr
    Public state As UInteger
    Public stateMask As UInteger
    Public pszText As IntPtr
    Public cchTextMax As Integer
    Public iImage As Integer
    Public iSelectedImage As Integer
    Public cChildren As Integer
    Public lParam As IntPtr
    Public iIntegral As Integer
    Public uStateEx As UInteger
    Public hwnd As IntPtr
    Public iExpandedImage As Integer
    Public iReserved As Integer
End Structure

import ctypes
from ctypes import wintypes

class TVITEMEXW(ctypes.Structure):
    _fields_ = [
        ("mask", wintypes.DWORD),
        ("hItem", ctypes.c_ssize_t),
        ("state", wintypes.DWORD),
        ("stateMask", wintypes.DWORD),
        ("pszText", ctypes.c_void_p),
        ("cchTextMax", ctypes.c_int),
        ("iImage", ctypes.c_int),
        ("iSelectedImage", ctypes.c_int),
        ("cChildren", ctypes.c_int),
        ("lParam", ctypes.c_ssize_t),
        ("iIntegral", ctypes.c_int),
        ("uStateEx", wintypes.DWORD),
        ("hwnd", ctypes.c_void_p),
        ("iExpandedImage", ctypes.c_int),
        ("iReserved", ctypes.c_int),
    ]

#[repr(C)]
pub struct TVITEMEXW {
    pub mask: u32,
    pub hItem: isize,
    pub state: u32,
    pub stateMask: u32,
    pub pszText: *mut core::ffi::c_void,
    pub cchTextMax: i32,
    pub iImage: i32,
    pub iSelectedImage: i32,
    pub cChildren: i32,
    pub lParam: isize,
    pub iIntegral: i32,
    pub uStateEx: u32,
    pub hwnd: *mut core::ffi::c_void,
    pub iExpandedImage: i32,
    pub iReserved: i32,
}

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

type TVITEMEXW struct {
	mask uint32
	hItem uintptr
	state uint32
	stateMask uint32
	pszText uintptr
	cchTextMax int32
	iImage int32
	iSelectedImage int32
	cChildren int32
	lParam uintptr
	iIntegral int32
	uStateEx uint32
	hwnd uintptr
	iExpandedImage int32
	iReserved int32
}

type
  TVITEMEXW = record
    mask: DWORD;
    hItem: NativeInt;
    state: DWORD;
    stateMask: DWORD;
    pszText: Pointer;
    cchTextMax: Integer;
    iImage: Integer;
    iSelectedImage: Integer;
    cChildren: Integer;
    lParam: NativeInt;
    iIntegral: Integer;
    uStateEx: DWORD;
    hwnd: Pointer;
    iExpandedImage: Integer;
    iReserved: Integer;
  end;

const TVITEMEXW = extern struct {
    mask: u32,
    hItem: isize,
    state: u32,
    stateMask: u32,
    pszText: ?*anyopaque,
    cchTextMax: i32,
    iImage: i32,
    iSelectedImage: i32,
    cChildren: i32,
    lParam: isize,
    iIntegral: i32,
    uStateEx: u32,
    hwnd: ?*anyopaque,
    iExpandedImage: i32,
    iReserved: i32,
};

type
  TVITEMEXW {.bycopy.} = object
    mask: uint32
    hItem: int
    state: uint32
    stateMask: uint32
    pszText: pointer
    cchTextMax: int32
    iImage: int32
    iSelectedImage: int32
    cChildren: int32
    lParam: int
    iIntegral: int32
    uStateEx: uint32
    hwnd: pointer
    iExpandedImage: int32
    iReserved: int32

struct TVITEMEXW
{
    uint mask;
    ptrdiff_t hItem;
    uint state;
    uint stateMask;
    void* pszText;
    int cchTextMax;
    int iImage;
    int iSelectedImage;
    int cChildren;
    ptrdiff_t lParam;
    int iIntegral;
    uint uStateEx;
    void* hwnd;
    int iExpandedImage;
    int iReserved;
}