NMCUSTOMTEXT

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 NMCUSTOMTEXT
{
    public NMHDR hdr;
    public IntPtr hDC;
    public IntPtr lpString;
    public int nCount;
    public IntPtr lpRect;
    public uint uFormat;
    [MarshalAs(UnmanagedType.Bool)] public bool fLink;
}

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 NMCUSTOMTEXT
    Public hdr As NMHDR
    Public hDC As IntPtr
    Public lpString As IntPtr
    Public nCount As Integer
    Public lpRect As IntPtr
    Public uFormat As UInteger
    <MarshalAs(UnmanagedType.Bool)> Public fLink As Boolean
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 NMCUSTOMTEXT(ctypes.Structure):
    _fields_ = [
        ("hdr", NMHDR),
        ("hDC", ctypes.c_void_p),
        ("lpString", ctypes.c_void_p),
        ("nCount", ctypes.c_int),
        ("lpRect", ctypes.c_void_p),
        ("uFormat", wintypes.DWORD),
        ("fLink", wintypes.BOOL),
    ]

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

#[repr(C)]
pub struct NMCUSTOMTEXT {
    pub hdr: NMHDR,
    pub hDC: *mut core::ffi::c_void,
    pub lpString: *mut core::ffi::c_void,
    pub nCount: i32,
    pub lpRect: *mut core::ffi::c_void,
    pub uFormat: u32,
    pub fLink: i32,
}

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

type NMHDR struct {
	hwndFrom uintptr
	idFrom uintptr
	code uint32
}

type NMCUSTOMTEXT struct {
	hdr NMHDR
	hDC uintptr
	lpString uintptr
	nCount int32
	lpRect uintptr
	uFormat uint32
	fLink int32
}

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

  NMCUSTOMTEXT = record
    hdr: NMHDR;
    hDC: Pointer;
    lpString: Pointer;
    nCount: Integer;
    lpRect: Pointer;
    uFormat: DWORD;
    fLink: BOOL;
  end;

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

const NMCUSTOMTEXT = extern struct {
    hdr: NMHDR,
    hDC: ?*anyopaque,
    lpString: ?*anyopaque,
    nCount: i32,
    lpRect: ?*anyopaque,
    uFormat: u32,
    fLink: i32,
};

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

  NMCUSTOMTEXT {.bycopy.} = object
    hdr: NMHDR
    hDC: pointer
    lpString: pointer
    nCount: int32
    lpRect: pointer
    uFormat: uint32
    fLink: int32

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

struct NMCUSTOMTEXT
{
    NMHDR hdr;
    void* hDC;
    void* lpString;
    int nCount;
    void* lpRect;
    uint uFormat;
    int fLink;
}