XSTATE_CONTEXT

using System;
using System.Runtime.InteropServices;

[StructLayout(LayoutKind.Sequential, CharSet = CharSet.Unicode)]
public struct XSTATE_CONTEXT
{
    public ulong Mask;
    public uint Length;
    public byte Flags;
    [MarshalAs(UnmanagedType.ByValArray, SizeConst = 3)] public byte[] Reserved0;
    public IntPtr Area;
    public uint Reserved2;
    public IntPtr Buffer;
    public uint Reserved3;
}

Imports System.Runtime.InteropServices

<StructLayout(LayoutKind.Sequential, CharSet:=CharSet.Unicode)>
Public Structure XSTATE_CONTEXT
    Public Mask As ULong
    Public Length As UInteger
    Public Flags As Byte
    <MarshalAs(UnmanagedType.ByValArray, SizeConst:=3)> Public Reserved0() As Byte
    Public Area As IntPtr
    Public Reserved2 As UInteger
    Public Buffer As IntPtr
    Public Reserved3 As UInteger
End Structure

import ctypes
from ctypes import wintypes

class XSTATE_CONTEXT(ctypes.Structure):
    _fields_ = [
        ("Mask", ctypes.c_ulonglong),
        ("Length", wintypes.DWORD),
        ("Flags", ctypes.c_ubyte),
        ("Reserved0", ctypes.c_ubyte * 3),
        ("Area", ctypes.c_void_p),
        ("Reserved2", wintypes.DWORD),
        ("Buffer", ctypes.c_void_p),
        ("Reserved3", wintypes.DWORD),
    ]

#[repr(C)]
pub struct XSTATE_CONTEXT {
    pub Mask: u64,
    pub Length: u32,
    pub Flags: u8,
    pub Reserved0: [u8; 3],
    pub Area: *mut core::ffi::c_void,
    pub Reserved2: u32,
    pub Buffer: *mut core::ffi::c_void,
    pub Reserved3: u32,
}

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

type XSTATE_CONTEXT struct {
	Mask uint64
	Length uint32
	Flags byte
	Reserved0 [3]byte
	Area uintptr
	Reserved2 uint32
	Buffer uintptr
	Reserved3 uint32
}

type
  XSTATE_CONTEXT = record
    Mask: UInt64;
    Length: DWORD;
    Flags: Byte;
    Reserved0: array[0..2] of Byte;
    Area: Pointer;
    Reserved2: DWORD;
    Buffer: Pointer;
    Reserved3: DWORD;
  end;

const XSTATE_CONTEXT = extern struct {
    Mask: u64,
    Length: u32,
    Flags: u8,
    Reserved0: [3]u8,
    Area: ?*anyopaque,
    Reserved2: u32,
    Buffer: ?*anyopaque,
    Reserved3: u32,
};

type
  XSTATE_CONTEXT {.bycopy.} = object
    Mask: uint64
    Length: uint32
    Flags: uint8
    Reserved0: array[3, uint8]
    Area: pointer
    Reserved2: uint32
    Buffer: pointer
    Reserved3: uint32

struct XSTATE_CONTEXT
{
    ulong Mask;
    uint Length;
    ubyte Flags;
    ubyte[3] Reserved0;
    void* Area;
    uint Reserved2;
    void* Buffer;
    uint Reserved3;
}