NMDATETIMECHANGE

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 SYSTEMTIME
{
    public ushort wYear;
    public ushort wMonth;
    public ushort wDayOfWeek;
    public ushort wDay;
    public ushort wHour;
    public ushort wMinute;
    public ushort wSecond;
    public ushort wMilliseconds;
}

[StructLayout(LayoutKind.Sequential, CharSet = CharSet.Unicode)]
public struct NMDATETIMECHANGE
{
    public NMHDR nmhdr;
    public uint dwFlags;
    public SYSTEMTIME st;
}

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 SYSTEMTIME
    Public wYear As UShort
    Public wMonth As UShort
    Public wDayOfWeek As UShort
    Public wDay As UShort
    Public wHour As UShort
    Public wMinute As UShort
    Public wSecond As UShort
    Public wMilliseconds As UShort
End Structure

<StructLayout(LayoutKind.Sequential, CharSet:=CharSet.Unicode)>
Public Structure NMDATETIMECHANGE
    Public nmhdr As NMHDR
    Public dwFlags As UInteger
    Public st As SYSTEMTIME
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 SYSTEMTIME(ctypes.Structure):
    _fields_ = [
        ("wYear", ctypes.c_ushort),
        ("wMonth", ctypes.c_ushort),
        ("wDayOfWeek", ctypes.c_ushort),
        ("wDay", ctypes.c_ushort),
        ("wHour", ctypes.c_ushort),
        ("wMinute", ctypes.c_ushort),
        ("wSecond", ctypes.c_ushort),
        ("wMilliseconds", ctypes.c_ushort),
    ]

class NMDATETIMECHANGE(ctypes.Structure):
    _fields_ = [
        ("nmhdr", NMHDR),
        ("dwFlags", wintypes.DWORD),
        ("st", SYSTEMTIME),
    ]

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

#[repr(C)]
pub struct SYSTEMTIME {
    pub wYear: u16,
    pub wMonth: u16,
    pub wDayOfWeek: u16,
    pub wDay: u16,
    pub wHour: u16,
    pub wMinute: u16,
    pub wSecond: u16,
    pub wMilliseconds: u16,
}

#[repr(C)]
pub struct NMDATETIMECHANGE {
    pub nmhdr: NMHDR,
    pub dwFlags: u32,
    pub st: SYSTEMTIME,
}

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

type NMHDR struct {
	hwndFrom uintptr
	idFrom uintptr
	code uint32
}

type SYSTEMTIME struct {
	wYear uint16
	wMonth uint16
	wDayOfWeek uint16
	wDay uint16
	wHour uint16
	wMinute uint16
	wSecond uint16
	wMilliseconds uint16
}

type NMDATETIMECHANGE struct {
	nmhdr NMHDR
	dwFlags uint32
	st SYSTEMTIME
}

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

  SYSTEMTIME = record
    wYear: Word;
    wMonth: Word;
    wDayOfWeek: Word;
    wDay: Word;
    wHour: Word;
    wMinute: Word;
    wSecond: Word;
    wMilliseconds: Word;
  end;

  NMDATETIMECHANGE = record
    nmhdr: NMHDR;
    dwFlags: DWORD;
    st: SYSTEMTIME;
  end;

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

const SYSTEMTIME = extern struct {
    wYear: u16,
    wMonth: u16,
    wDayOfWeek: u16,
    wDay: u16,
    wHour: u16,
    wMinute: u16,
    wSecond: u16,
    wMilliseconds: u16,
};

const NMDATETIMECHANGE = extern struct {
    nmhdr: NMHDR,
    dwFlags: u32,
    st: SYSTEMTIME,
};

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

  SYSTEMTIME {.bycopy.} = object
    wYear: uint16
    wMonth: uint16
    wDayOfWeek: uint16
    wDay: uint16
    wHour: uint16
    wMinute: uint16
    wSecond: uint16
    wMilliseconds: uint16

  NMDATETIMECHANGE {.bycopy.} = object
    nmhdr: NMHDR
    dwFlags: uint32
    st: SYSTEMTIME

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

struct SYSTEMTIME
{
    ushort wYear;
    ushort wMonth;
    ushort wDayOfWeek;
    ushort wDay;
    ushort wHour;
    ushort wMinute;
    ushort wSecond;
    ushort wMilliseconds;
}

struct NMDATETIMECHANGE
{
    NMHDR nmhdr;
    uint dwFlags;
    SYSTEMTIME st;
}