OLEUICONVERTA

using System;
using System.Runtime.InteropServices;

[StructLayout(LayoutKind.Sequential, CharSet = CharSet.Unicode)]
public struct OLEUICONVERTA
{
    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 Guid clsid;
    public Guid clsidConvertDefault;
    public Guid clsidActivateDefault;
    public Guid clsidNew;
    public uint dvAspect;
    public ushort wFormat;
    [MarshalAs(UnmanagedType.Bool)] public bool fIsLinkedObject;
    public IntPtr hMetaPict;
    public IntPtr lpszUserType;
    [MarshalAs(UnmanagedType.Bool)] public bool fObjectsIconChanged;
    public IntPtr lpszDefLabel;
    public uint cClsidExclude;
    public IntPtr lpClsidExclude;
}

Imports System.Runtime.InteropServices

<StructLayout(LayoutKind.Sequential, CharSet:=CharSet.Unicode)>
Public Structure OLEUICONVERTA
    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 clsid As Guid
    Public clsidConvertDefault As Guid
    Public clsidActivateDefault As Guid
    Public clsidNew As Guid
    Public dvAspect As UInteger
    Public wFormat As UShort
    <MarshalAs(UnmanagedType.Bool)> Public fIsLinkedObject As Boolean
    Public hMetaPict As IntPtr
    Public lpszUserType As IntPtr
    <MarshalAs(UnmanagedType.Bool)> Public fObjectsIconChanged As Boolean
    Public lpszDefLabel As IntPtr
    Public cClsidExclude As UInteger
    Public lpClsidExclude As IntPtr
End Structure

import ctypes
from ctypes import wintypes

class OLEUICONVERTA(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),
        ("clsid", GUID),
        ("clsidConvertDefault", GUID),
        ("clsidActivateDefault", GUID),
        ("clsidNew", GUID),
        ("dvAspect", wintypes.DWORD),
        ("wFormat", ctypes.c_ushort),
        ("fIsLinkedObject", wintypes.BOOL),
        ("hMetaPict", ctypes.c_void_p),
        ("lpszUserType", ctypes.c_void_p),
        ("fObjectsIconChanged", wintypes.BOOL),
        ("lpszDefLabel", ctypes.c_void_p),
        ("cClsidExclude", wintypes.DWORD),
        ("lpClsidExclude", ctypes.c_void_p),
    ]

#[repr(C)]
pub struct OLEUICONVERTA {
    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 clsid: GUID,
    pub clsidConvertDefault: GUID,
    pub clsidActivateDefault: GUID,
    pub clsidNew: GUID,
    pub dvAspect: u32,
    pub wFormat: u16,
    pub fIsLinkedObject: i32,
    pub hMetaPict: *mut core::ffi::c_void,
    pub lpszUserType: *mut core::ffi::c_void,
    pub fObjectsIconChanged: i32,
    pub lpszDefLabel: *mut core::ffi::c_void,
    pub cClsidExclude: u32,
    pub lpClsidExclude: *mut core::ffi::c_void,
}

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

type OLEUICONVERTA struct {
	cbStruct uint32
	dwFlags uint32
	hWndOwner uintptr
	lpszCaption uintptr
	lpfnHook uintptr
	lCustData uintptr
	hInstance uintptr
	lpszTemplate uintptr
	hResource uintptr
	clsid windows.GUID
	clsidConvertDefault windows.GUID
	clsidActivateDefault windows.GUID
	clsidNew windows.GUID
	dvAspect uint32
	wFormat uint16
	fIsLinkedObject int32
	hMetaPict uintptr
	lpszUserType uintptr
	fObjectsIconChanged int32
	lpszDefLabel uintptr
	cClsidExclude uint32
	lpClsidExclude uintptr
}

type
  OLEUICONVERTA = record
    cbStruct: DWORD;
    dwFlags: DWORD;
    hWndOwner: Pointer;
    lpszCaption: Pointer;
    lpfnHook: Pointer;
    lCustData: NativeInt;
    hInstance: Pointer;
    lpszTemplate: Pointer;
    hResource: Pointer;
    clsid: TGUID;
    clsidConvertDefault: TGUID;
    clsidActivateDefault: TGUID;
    clsidNew: TGUID;
    dvAspect: DWORD;
    wFormat: Word;
    fIsLinkedObject: BOOL;
    hMetaPict: Pointer;
    lpszUserType: Pointer;
    fObjectsIconChanged: BOOL;
    lpszDefLabel: Pointer;
    cClsidExclude: DWORD;
    lpClsidExclude: Pointer;
  end;

const OLEUICONVERTA = extern struct {
    cbStruct: u32,
    dwFlags: u32,
    hWndOwner: ?*anyopaque,
    lpszCaption: ?*anyopaque,
    lpfnHook: ?*anyopaque,
    lCustData: isize,
    hInstance: ?*anyopaque,
    lpszTemplate: ?*anyopaque,
    hResource: ?*anyopaque,
    clsid: GUID,
    clsidConvertDefault: GUID,
    clsidActivateDefault: GUID,
    clsidNew: GUID,
    dvAspect: u32,
    wFormat: u16,
    fIsLinkedObject: i32,
    hMetaPict: ?*anyopaque,
    lpszUserType: ?*anyopaque,
    fObjectsIconChanged: i32,
    lpszDefLabel: ?*anyopaque,
    cClsidExclude: u32,
    lpClsidExclude: ?*anyopaque,
};

type
  OLEUICONVERTA {.bycopy.} = object
    cbStruct: uint32
    dwFlags: uint32
    hWndOwner: pointer
    lpszCaption: pointer
    lpfnHook: pointer
    lCustData: int
    hInstance: pointer
    lpszTemplate: pointer
    hResource: pointer
    clsid: GUID
    clsidConvertDefault: GUID
    clsidActivateDefault: GUID
    clsidNew: GUID
    dvAspect: uint32
    wFormat: uint16
    fIsLinkedObject: int32
    hMetaPict: pointer
    lpszUserType: pointer
    fObjectsIconChanged: int32
    lpszDefLabel: pointer
    cClsidExclude: uint32
    lpClsidExclude: pointer

struct OLEUICONVERTA
{
    uint cbStruct;
    uint dwFlags;
    void* hWndOwner;
    void* lpszCaption;
    void* lpfnHook;
    ptrdiff_t lCustData;
    void* hInstance;
    void* lpszTemplate;
    void* hResource;
    GUID clsid;
    GUID clsidConvertDefault;
    GUID clsidActivateDefault;
    GUID clsidNew;
    uint dvAspect;
    ushort wFormat;
    int fIsLinkedObject;
    void* hMetaPict;
    void* lpszUserType;
    int fObjectsIconChanged;
    void* lpszDefLabel;
    uint cClsidExclude;
    void* lpClsidExclude;
}