OSVERSIONINFOEXA

using System;
using System.Runtime.InteropServices;

[StructLayout(LayoutKind.Sequential, CharSet = CharSet.Unicode)]
public struct OSVERSIONINFOEXA
{
    public uint dwOSVersionInfoSize;
    public uint dwMajorVersion;
    public uint dwMinorVersion;
    public uint dwBuildNumber;
    public uint dwPlatformId;
    [MarshalAs(UnmanagedType.ByValArray, SizeConst = 128)] public sbyte[] szCSDVersion;
    public ushort wServicePackMajor;
    public ushort wServicePackMinor;
    public ushort wSuiteMask;
    public byte wProductType;
    public byte wReserved;
}

Imports System.Runtime.InteropServices

<StructLayout(LayoutKind.Sequential, CharSet:=CharSet.Unicode)>
Public Structure OSVERSIONINFOEXA
    Public dwOSVersionInfoSize As UInteger
    Public dwMajorVersion As UInteger
    Public dwMinorVersion As UInteger
    Public dwBuildNumber As UInteger
    Public dwPlatformId As UInteger
    <MarshalAs(UnmanagedType.ByValArray, SizeConst:=128)> Public szCSDVersion() As SByte
    Public wServicePackMajor As UShort
    Public wServicePackMinor As UShort
    Public wSuiteMask As UShort
    Public wProductType As Byte
    Public wReserved As Byte
End Structure

import ctypes
from ctypes import wintypes

class OSVERSIONINFOEXA(ctypes.Structure):
    _fields_ = [
        ("dwOSVersionInfoSize", wintypes.DWORD),
        ("dwMajorVersion", wintypes.DWORD),
        ("dwMinorVersion", wintypes.DWORD),
        ("dwBuildNumber", wintypes.DWORD),
        ("dwPlatformId", wintypes.DWORD),
        ("szCSDVersion", ctypes.c_byte * 128),
        ("wServicePackMajor", ctypes.c_ushort),
        ("wServicePackMinor", ctypes.c_ushort),
        ("wSuiteMask", ctypes.c_ushort),
        ("wProductType", ctypes.c_ubyte),
        ("wReserved", ctypes.c_ubyte),
    ]

#[repr(C)]
pub struct OSVERSIONINFOEXA {
    pub dwOSVersionInfoSize: u32,
    pub dwMajorVersion: u32,
    pub dwMinorVersion: u32,
    pub dwBuildNumber: u32,
    pub dwPlatformId: u32,
    pub szCSDVersion: [i8; 128],
    pub wServicePackMajor: u16,
    pub wServicePackMinor: u16,
    pub wSuiteMask: u16,
    pub wProductType: u8,
    pub wReserved: u8,
}

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

type OSVERSIONINFOEXA struct {
	dwOSVersionInfoSize uint32
	dwMajorVersion uint32
	dwMinorVersion uint32
	dwBuildNumber uint32
	dwPlatformId uint32
	szCSDVersion [128]int8
	wServicePackMajor uint16
	wServicePackMinor uint16
	wSuiteMask uint16
	wProductType byte
	wReserved byte
}

type
  OSVERSIONINFOEXA = record
    dwOSVersionInfoSize: DWORD;
    dwMajorVersion: DWORD;
    dwMinorVersion: DWORD;
    dwBuildNumber: DWORD;
    dwPlatformId: DWORD;
    szCSDVersion: array[0..127] of Shortint;
    wServicePackMajor: Word;
    wServicePackMinor: Word;
    wSuiteMask: Word;
    wProductType: Byte;
    wReserved: Byte;
  end;

const OSVERSIONINFOEXA = extern struct {
    dwOSVersionInfoSize: u32,
    dwMajorVersion: u32,
    dwMinorVersion: u32,
    dwBuildNumber: u32,
    dwPlatformId: u32,
    szCSDVersion: [128]i8,
    wServicePackMajor: u16,
    wServicePackMinor: u16,
    wSuiteMask: u16,
    wProductType: u8,
    wReserved: u8,
};

type
  OSVERSIONINFOEXA {.bycopy.} = object
    dwOSVersionInfoSize: uint32
    dwMajorVersion: uint32
    dwMinorVersion: uint32
    dwBuildNumber: uint32
    dwPlatformId: uint32
    szCSDVersion: array[128, int8]
    wServicePackMajor: uint16
    wServicePackMinor: uint16
    wSuiteMask: uint16
    wProductType: uint8
    wReserved: uint8

struct OSVERSIONINFOEXA
{
    uint dwOSVersionInfoSize;
    uint dwMajorVersion;
    uint dwMinorVersion;
    uint dwBuildNumber;
    uint dwPlatformId;
    byte[128] szCSDVersion;
    ushort wServicePackMajor;
    ushort wServicePackMinor;
    ushort wSuiteMask;
    ubyte wProductType;
    ubyte wReserved;
}