NMTVDISPINFOEXW

using System;
using System.Runtime.InteropServices;

[StructLayout(LayoutKind.Sequential, CharSet = CharSet.Unicode)]
public struct NMHDR
{
    public IntPtr hwndFrom;
    public UIntPtr idFrom;
    public uint code;
}

[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;
}

[StructLayout(LayoutKind.Sequential, CharSet = CharSet.Unicode)]
public struct NMTVDISPINFOEXW
{
    public NMHDR hdr;
    public TVITEMEXW item;
}

Imports System.Runtime.InteropServices

<StructLayout(LayoutKind.Sequential, CharSet:=CharSet.Unicode)>
Public Structure NMHDR
    Public hwndFrom As IntPtr
    Public idFrom As UIntPtr
    Public code As UInteger
End Structure

<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

<StructLayout(LayoutKind.Sequential, CharSet:=CharSet.Unicode)>
Public Structure NMTVDISPINFOEXW
    Public hdr As NMHDR
    Public item As TVITEMEXW
End Structure

import ctypes
from ctypes import wintypes

class NMHDR(ctypes.Structure):
    _fields_ = [
        ("hwndFrom", ctypes.c_void_p),
        ("idFrom", ctypes.c_size_t),
        ("code", wintypes.DWORD),
    ]

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),
    ]

class NMTVDISPINFOEXW(ctypes.Structure):
    _fields_ = [
        ("hdr", NMHDR),
        ("item", TVITEMEXW),
    ]

#[repr(C)]
pub struct NMHDR {
    pub hwndFrom: *mut core::ffi::c_void,
    pub idFrom: usize,
    pub code: u32,
}

#[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,
}

#[repr(C)]
pub struct NMTVDISPINFOEXW {
    pub hdr: NMHDR,
    pub item: TVITEMEXW,
}

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

type NMHDR struct {
	hwndFrom uintptr
	idFrom uintptr
	code uint32
}

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 NMTVDISPINFOEXW struct {
	hdr NMHDR
	item TVITEMEXW
}

type
  NMHDR = record
    hwndFrom: Pointer;
    idFrom: NativeUInt;
    code: DWORD;
  end;

  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;

  NMTVDISPINFOEXW = record
    hdr: NMHDR;
    item: TVITEMEXW;
  end;

const NMHDR = extern struct {
    hwndFrom: ?*anyopaque,
    idFrom: usize,
    code: u32,
};

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,
};

const NMTVDISPINFOEXW = extern struct {
    hdr: NMHDR,
    item: TVITEMEXW,
};

type
  NMHDR {.bycopy.} = object
    hwndFrom: pointer
    idFrom: uint
    code: uint32

  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

  NMTVDISPINFOEXW {.bycopy.} = object
    hdr: NMHDR
    item: TVITEMEXW

struct NMHDR
{
    void* hwndFrom;
    size_t idFrom;
    uint code;
}

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;
}

struct NMTVDISPINFOEXW
{
    NMHDR hdr;
    TVITEMEXW item;
}