TS_ATTRVAL

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 TS_ATTRVAL
{
    public Guid idAttr;
    public uint dwOverlapId;
    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 TS_ATTRVAL
    Public idAttr As Guid
    Public dwOverlapId As UInteger
    Public varValue As VARIANT
End Structure

import ctypes
from ctypes import wintypes

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

class TS_ATTRVAL(ctypes.Structure):
    _fields_ = [
        ("idAttr", GUID),
        ("dwOverlapId", wintypes.DWORD),
        ("varValue", VARIANT),
    ]

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

#[repr(C)]
pub struct TS_ATTRVAL {
    pub idAttr: GUID,
    pub dwOverlapId: u32,
    pub varValue: VARIANT,
}

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

type VARIANT struct {
	Anonymous _Anonymous_e__Union
}

type TS_ATTRVAL struct {
	idAttr windows.GUID
	dwOverlapId uint32
	varValue VARIANT
}

type
  VARIANT = record
    Anonymous: _Anonymous_e__Union;
  end;

  TS_ATTRVAL = record
    idAttr: TGUID;
    dwOverlapId: DWORD;
    varValue: VARIANT;
  end;

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

const TS_ATTRVAL = extern struct {
    idAttr: GUID,
    dwOverlapId: u32,
    varValue: VARIANT,
};

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

  TS_ATTRVAL {.bycopy.} = object
    idAttr: GUID
    dwOverlapId: uint32
    varValue: VARIANT

struct VARIANT
{
    _Anonymous_e__Union Anonymous;
}

struct TS_ATTRVAL
{
    GUID idAttr;
    uint dwOverlapId;
    VARIANT varValue;
}