DATETIMEPICKERINFO

using System;
using System.Runtime.InteropServices;

[StructLayout(LayoutKind.Sequential, CharSet = CharSet.Unicode)]
public struct RECT
{
    public int left;
    public int top;
    public int right;
    public int bottom;
}

[StructLayout(LayoutKind.Sequential, CharSet = CharSet.Unicode)]
public struct DATETIMEPICKERINFO
{
    public uint cbSize;
    public RECT rcCheck;
    public uint stateCheck;
    public RECT rcButton;
    public uint stateButton;
    public IntPtr hwndEdit;
    public IntPtr hwndUD;
    public IntPtr hwndDropDown;
}

Imports System.Runtime.InteropServices

<StructLayout(LayoutKind.Sequential, CharSet:=CharSet.Unicode)>
Public Structure RECT
    Public left As Integer
    Public top As Integer
    Public right As Integer
    Public bottom As Integer
End Structure

<StructLayout(LayoutKind.Sequential, CharSet:=CharSet.Unicode)>
Public Structure DATETIMEPICKERINFO
    Public cbSize As UInteger
    Public rcCheck As RECT
    Public stateCheck As UInteger
    Public rcButton As RECT
    Public stateButton As UInteger
    Public hwndEdit As IntPtr
    Public hwndUD As IntPtr
    Public hwndDropDown As IntPtr
End Structure

import ctypes
from ctypes import wintypes

class RECT(ctypes.Structure):
    _fields_ = [
        ("left", ctypes.c_int),
        ("top", ctypes.c_int),
        ("right", ctypes.c_int),
        ("bottom", ctypes.c_int),
    ]

class DATETIMEPICKERINFO(ctypes.Structure):
    _fields_ = [
        ("cbSize", wintypes.DWORD),
        ("rcCheck", RECT),
        ("stateCheck", wintypes.DWORD),
        ("rcButton", RECT),
        ("stateButton", wintypes.DWORD),
        ("hwndEdit", ctypes.c_void_p),
        ("hwndUD", ctypes.c_void_p),
        ("hwndDropDown", ctypes.c_void_p),
    ]

#[repr(C)]
pub struct RECT {
    pub left: i32,
    pub top: i32,
    pub right: i32,
    pub bottom: i32,
}

#[repr(C)]
pub struct DATETIMEPICKERINFO {
    pub cbSize: u32,
    pub rcCheck: RECT,
    pub stateCheck: u32,
    pub rcButton: RECT,
    pub stateButton: u32,
    pub hwndEdit: *mut core::ffi::c_void,
    pub hwndUD: *mut core::ffi::c_void,
    pub hwndDropDown: *mut core::ffi::c_void,
}

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

type RECT struct {
	left int32
	top int32
	right int32
	bottom int32
}

type DATETIMEPICKERINFO struct {
	cbSize uint32
	rcCheck RECT
	stateCheck uint32
	rcButton RECT
	stateButton uint32
	hwndEdit uintptr
	hwndUD uintptr
	hwndDropDown uintptr
}

type
  RECT = record
    left: Integer;
    top: Integer;
    right: Integer;
    bottom: Integer;
  end;

  DATETIMEPICKERINFO = record
    cbSize: DWORD;
    rcCheck: RECT;
    stateCheck: DWORD;
    rcButton: RECT;
    stateButton: DWORD;
    hwndEdit: Pointer;
    hwndUD: Pointer;
    hwndDropDown: Pointer;
  end;

const RECT = extern struct {
    left: i32,
    top: i32,
    right: i32,
    bottom: i32,
};

const DATETIMEPICKERINFO = extern struct {
    cbSize: u32,
    rcCheck: RECT,
    stateCheck: u32,
    rcButton: RECT,
    stateButton: u32,
    hwndEdit: ?*anyopaque,
    hwndUD: ?*anyopaque,
    hwndDropDown: ?*anyopaque,
};

type
  RECT {.bycopy.} = object
    left: int32
    top: int32
    right: int32
    bottom: int32

  DATETIMEPICKERINFO {.bycopy.} = object
    cbSize: uint32
    rcCheck: RECT
    stateCheck: uint32
    rcButton: RECT
    stateButton: uint32
    hwndEdit: pointer
    hwndUD: pointer
    hwndDropDown: pointer

struct RECT
{
    int left;
    int top;
    int right;
    int bottom;
}

struct DATETIMEPICKERINFO
{
    uint cbSize;
    RECT rcCheck;
    uint stateCheck;
    RECT rcButton;
    uint stateButton;
    void* hwndEdit;
    void* hwndUD;
    void* hwndDropDown;
}