NMTVGETINFOTIPW

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 NMTVGETINFOTIPW
{
    public NMHDR hdr;
    public IntPtr pszText;
    public int cchTextMax;
    public IntPtr hItem;
    public IntPtr lParam;
}

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 NMTVGETINFOTIPW
    Public hdr As NMHDR
    Public pszText As IntPtr
    Public cchTextMax As Integer
    Public hItem As IntPtr
    Public lParam As IntPtr
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 NMTVGETINFOTIPW(ctypes.Structure):
    _fields_ = [
        ("hdr", NMHDR),
        ("pszText", ctypes.c_void_p),
        ("cchTextMax", ctypes.c_int),
        ("hItem", ctypes.c_ssize_t),
        ("lParam", ctypes.c_ssize_t),
    ]

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

#[repr(C)]
pub struct NMTVGETINFOTIPW {
    pub hdr: NMHDR,
    pub pszText: *mut core::ffi::c_void,
    pub cchTextMax: i32,
    pub hItem: isize,
    pub lParam: isize,
}

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

type NMHDR struct {
	hwndFrom uintptr
	idFrom uintptr
	code uint32
}

type NMTVGETINFOTIPW struct {
	hdr NMHDR
	pszText uintptr
	cchTextMax int32
	hItem uintptr
	lParam uintptr
}

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

  NMTVGETINFOTIPW = record
    hdr: NMHDR;
    pszText: Pointer;
    cchTextMax: Integer;
    hItem: NativeInt;
    lParam: NativeInt;
  end;

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

const NMTVGETINFOTIPW = extern struct {
    hdr: NMHDR,
    pszText: ?*anyopaque,
    cchTextMax: i32,
    hItem: isize,
    lParam: isize,
};

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

  NMTVGETINFOTIPW {.bycopy.} = object
    hdr: NMHDR
    pszText: pointer
    cchTextMax: int32
    hItem: int
    lParam: int

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

struct NMTVGETINFOTIPW
{
    NMHDR hdr;
    void* pszText;
    int cchTextMax;
    ptrdiff_t hItem;
    ptrdiff_t lParam;
}