CUSTDATAITEM

using System;
using System.Runtime.InteropServices;

[StructLayout(LayoutKind.Sequential, CharSet = CharSet.Unicode)]
public struct VARIANT
{
    public _Anonymous_e__Union Anonymous;
}

[StructLayout(LayoutKind.Sequential, CharSet = CharSet.Unicode)]
public struct CUSTDATAITEM
{
    public Guid guid;
    public VARIANT varValue;
}

Imports System.Runtime.InteropServices

<StructLayout(LayoutKind.Sequential, CharSet:=CharSet.Unicode)>
Public Structure VARIANT
    Public Anonymous As _Anonymous_e__Union
End Structure

<StructLayout(LayoutKind.Sequential, CharSet:=CharSet.Unicode)>
Public Structure CUSTDATAITEM
    Public guid As Guid
    Public varValue As VARIANT
End Structure

import ctypes
from ctypes import wintypes

class VARIANT(ctypes.Structure):
    _fields_ = [
        ("Anonymous", _Anonymous_e__Union),
    ]

class CUSTDATAITEM(ctypes.Structure):
    _fields_ = [
        ("guid", GUID),
        ("varValue", VARIANT),
    ]

#[repr(C)]
pub struct VARIANT {
    pub Anonymous: _Anonymous_e__Union,
}

#[repr(C)]
pub struct CUSTDATAITEM {
    pub guid: GUID,
    pub varValue: VARIANT,
}

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

type VARIANT struct {
	Anonymous _Anonymous_e__Union
}

type CUSTDATAITEM struct {
	guid windows.GUID
	varValue VARIANT
}

type
  VARIANT = record
    Anonymous: _Anonymous_e__Union;
  end;

  CUSTDATAITEM = record
    guid: TGUID;
    varValue: VARIANT;
  end;

const VARIANT = extern struct {
    Anonymous: _Anonymous_e__Union,
};

const CUSTDATAITEM = extern struct {
    guid: GUID,
    varValue: VARIANT,
};

type
  VARIANT {.bycopy.} = object
    Anonymous: _Anonymous_e__Union

  CUSTDATAITEM {.bycopy.} = object
    guid: GUID
    varValue: VARIANT

struct VARIANT
{
    _Anonymous_e__Union Anonymous;
}

struct CUSTDATAITEM
{
    GUID guid;
    VARIANT varValue;
}