OLEUICHANGESOURCEA

using System;
using System.Runtime.InteropServices;

[StructLayout(LayoutKind.Sequential, CharSet = CharSet.Unicode)]
public struct OLEUICHANGESOURCEA
{
    public uint cbStruct;
    public uint dwFlags;
    public IntPtr hWndOwner;
    public IntPtr lpszCaption;
    public IntPtr lpfnHook;
    public IntPtr lCustData;
    public IntPtr hInstance;
    public IntPtr lpszTemplate;
    public IntPtr hResource;
    public IntPtr lpOFN;
    [MarshalAs(UnmanagedType.ByValArray, SizeConst = 4)] public uint[] dwReserved1;
    public IntPtr lpOleUILinkContainer;
    public uint dwLink;
    public IntPtr lpszDisplayName;
    public uint nFileLength;
    public IntPtr lpszFrom;
    public IntPtr lpszTo;
}

Imports System.Runtime.InteropServices

<StructLayout(LayoutKind.Sequential, CharSet:=CharSet.Unicode)>
Public Structure OLEUICHANGESOURCEA
    Public cbStruct As UInteger
    Public dwFlags As UInteger
    Public hWndOwner As IntPtr
    Public lpszCaption As IntPtr
    Public lpfnHook As IntPtr
    Public lCustData As IntPtr
    Public hInstance As IntPtr
    Public lpszTemplate As IntPtr
    Public hResource As IntPtr
    Public lpOFN As IntPtr
    <MarshalAs(UnmanagedType.ByValArray, SizeConst:=4)> Public dwReserved1() As UInteger
    Public lpOleUILinkContainer As IntPtr
    Public dwLink As UInteger
    Public lpszDisplayName As IntPtr
    Public nFileLength As UInteger
    Public lpszFrom As IntPtr
    Public lpszTo As IntPtr
End Structure

import ctypes
from ctypes import wintypes

class OLEUICHANGESOURCEA(ctypes.Structure):
    _fields_ = [
        ("cbStruct", wintypes.DWORD),
        ("dwFlags", wintypes.DWORD),
        ("hWndOwner", ctypes.c_void_p),
        ("lpszCaption", ctypes.c_void_p),
        ("lpfnHook", ctypes.c_void_p),
        ("lCustData", ctypes.c_ssize_t),
        ("hInstance", ctypes.c_void_p),
        ("lpszTemplate", ctypes.c_void_p),
        ("hResource", ctypes.c_void_p),
        ("lpOFN", ctypes.c_void_p),
        ("dwReserved1", wintypes.DWORD * 4),
        ("lpOleUILinkContainer", ctypes.c_void_p),
        ("dwLink", wintypes.DWORD),
        ("lpszDisplayName", ctypes.c_void_p),
        ("nFileLength", wintypes.DWORD),
        ("lpszFrom", ctypes.c_void_p),
        ("lpszTo", ctypes.c_void_p),
    ]

#[repr(C)]
pub struct OLEUICHANGESOURCEA {
    pub cbStruct: u32,
    pub dwFlags: u32,
    pub hWndOwner: *mut core::ffi::c_void,
    pub lpszCaption: *mut core::ffi::c_void,
    pub lpfnHook: *mut core::ffi::c_void,
    pub lCustData: isize,
    pub hInstance: *mut core::ffi::c_void,
    pub lpszTemplate: *mut core::ffi::c_void,
    pub hResource: *mut core::ffi::c_void,
    pub lpOFN: *mut core::ffi::c_void,
    pub dwReserved1: [u32; 4],
    pub lpOleUILinkContainer: *mut core::ffi::c_void,
    pub dwLink: u32,
    pub lpszDisplayName: *mut core::ffi::c_void,
    pub nFileLength: u32,
    pub lpszFrom: *mut core::ffi::c_void,
    pub lpszTo: *mut core::ffi::c_void,
}

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

type OLEUICHANGESOURCEA struct {
	cbStruct uint32
	dwFlags uint32
	hWndOwner uintptr
	lpszCaption uintptr
	lpfnHook uintptr
	lCustData uintptr
	hInstance uintptr
	lpszTemplate uintptr
	hResource uintptr
	lpOFN uintptr
	dwReserved1 [4]uint32
	lpOleUILinkContainer uintptr
	dwLink uint32
	lpszDisplayName uintptr
	nFileLength uint32
	lpszFrom uintptr
	lpszTo uintptr
}

type
  OLEUICHANGESOURCEA = record
    cbStruct: DWORD;
    dwFlags: DWORD;
    hWndOwner: Pointer;
    lpszCaption: Pointer;
    lpfnHook: Pointer;
    lCustData: NativeInt;
    hInstance: Pointer;
    lpszTemplate: Pointer;
    hResource: Pointer;
    lpOFN: Pointer;
    dwReserved1: array[0..3] of DWORD;
    lpOleUILinkContainer: Pointer;
    dwLink: DWORD;
    lpszDisplayName: Pointer;
    nFileLength: DWORD;
    lpszFrom: Pointer;
    lpszTo: Pointer;
  end;

const OLEUICHANGESOURCEA = extern struct {
    cbStruct: u32,
    dwFlags: u32,
    hWndOwner: ?*anyopaque,
    lpszCaption: ?*anyopaque,
    lpfnHook: ?*anyopaque,
    lCustData: isize,
    hInstance: ?*anyopaque,
    lpszTemplate: ?*anyopaque,
    hResource: ?*anyopaque,
    lpOFN: ?*anyopaque,
    dwReserved1: [4]u32,
    lpOleUILinkContainer: ?*anyopaque,
    dwLink: u32,
    lpszDisplayName: ?*anyopaque,
    nFileLength: u32,
    lpszFrom: ?*anyopaque,
    lpszTo: ?*anyopaque,
};

type
  OLEUICHANGESOURCEA {.bycopy.} = object
    cbStruct: uint32
    dwFlags: uint32
    hWndOwner: pointer
    lpszCaption: pointer
    lpfnHook: pointer
    lCustData: int
    hInstance: pointer
    lpszTemplate: pointer
    hResource: pointer
    lpOFN: pointer
    dwReserved1: array[4, uint32]
    lpOleUILinkContainer: pointer
    dwLink: uint32
    lpszDisplayName: pointer
    nFileLength: uint32
    lpszFrom: pointer
    lpszTo: pointer

struct OLEUICHANGESOURCEA
{
    uint cbStruct;
    uint dwFlags;
    void* hWndOwner;
    void* lpszCaption;
    void* lpfnHook;
    ptrdiff_t lCustData;
    void* hInstance;
    void* lpszTemplate;
    void* hResource;
    void* lpOFN;
    uint[4] dwReserved1;
    void* lpOleUILinkContainer;
    uint dwLink;
    void* lpszDisplayName;
    uint nFileLength;
    void* lpszFrom;
    void* lpszTo;
}