DBCOLUMNDESC

using System;
using System.Runtime.InteropServices;

[StructLayout(LayoutKind.Sequential, CharSet = CharSet.Unicode)]
public struct DBID
{
    public _uGuid_e__Union uGuid;
    public uint eKind;
    public _uName_e__Union uName;
}

[StructLayout(LayoutKind.Sequential, Pack = 2, CharSet = CharSet.Unicode)]
public struct DBCOLUMNDESC
{
    public IntPtr pwszTypeName;
    public IntPtr pTypeInfo;
    public IntPtr rgPropertySets;
    public IntPtr pclsid;
    public uint cPropertySets;
    public UIntPtr ulColumnSize;
    public DBID dbcid;
    public ushort wType;
    public byte bPrecision;
    public byte bScale;
}

Imports System.Runtime.InteropServices

<StructLayout(LayoutKind.Sequential, CharSet:=CharSet.Unicode)>
Public Structure DBID
    Public uGuid As _uGuid_e__Union
    Public eKind As UInteger
    Public uName As _uName_e__Union
End Structure

<StructLayout(LayoutKind.Sequential, Pack:=2, CharSet:=CharSet.Unicode)>
Public Structure DBCOLUMNDESC
    Public pwszTypeName As IntPtr
    Public pTypeInfo As IntPtr
    Public rgPropertySets As IntPtr
    Public pclsid As IntPtr
    Public cPropertySets As UInteger
    Public ulColumnSize As UIntPtr
    Public dbcid As DBID
    Public wType As UShort
    Public bPrecision As Byte
    Public bScale As Byte
End Structure

import ctypes
from ctypes import wintypes

class DBID(ctypes.Structure):
    _fields_ = [
        ("uGuid", _uGuid_e__Union),
        ("eKind", wintypes.DWORD),
        ("uName", _uName_e__Union),
    ]

class DBCOLUMNDESC(ctypes.Structure):
    _pack_ = 2
    _fields_ = [
        ("pwszTypeName", ctypes.c_void_p),
        ("pTypeInfo", ctypes.c_void_p),
        ("rgPropertySets", ctypes.c_void_p),
        ("pclsid", ctypes.c_void_p),
        ("cPropertySets", wintypes.DWORD),
        ("ulColumnSize", ctypes.c_size_t),
        ("dbcid", DBID),
        ("wType", ctypes.c_ushort),
        ("bPrecision", ctypes.c_ubyte),
        ("bScale", ctypes.c_ubyte),
    ]

#[repr(C)]
pub struct DBID {
    pub uGuid: _uGuid_e__Union,
    pub eKind: u32,
    pub uName: _uName_e__Union,
}

#[repr(C, packed(2))]
pub struct DBCOLUMNDESC {
    pub pwszTypeName: *mut core::ffi::c_void,
    pub pTypeInfo: *mut core::ffi::c_void,
    pub rgPropertySets: *mut core::ffi::c_void,
    pub pclsid: *mut core::ffi::c_void,
    pub cPropertySets: u32,
    pub ulColumnSize: usize,
    pub dbcid: DBID,
    pub wType: u16,
    pub bPrecision: u8,
    pub bScale: u8,
}

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

type DBID struct {
	uGuid _uGuid_e__Union
	eKind uint32
	uName _uName_e__Union
}

type DBCOLUMNDESC struct {
	pwszTypeName uintptr
	pTypeInfo uintptr
	rgPropertySets uintptr
	pclsid uintptr
	cPropertySets uint32
	ulColumnSize uintptr
	dbcid DBID
	wType uint16
	bPrecision byte
	bScale byte
}

type
  DBID = record
    uGuid: _uGuid_e__Union;
    eKind: DWORD;
    uName: _uName_e__Union;
  end;

  DBCOLUMNDESC = packed record
    pwszTypeName: Pointer;
    pTypeInfo: Pointer;
    rgPropertySets: Pointer;
    pclsid: Pointer;
    cPropertySets: DWORD;
    ulColumnSize: NativeUInt;
    dbcid: DBID;
    wType: Word;
    bPrecision: Byte;
    bScale: Byte;
  end;

const DBID = extern struct {
    uGuid: _uGuid_e__Union,
    eKind: u32,
    uName: _uName_e__Union,
};

const DBCOLUMNDESC = extern struct {
    pwszTypeName: ?*anyopaque,
    pTypeInfo: ?*anyopaque,
    rgPropertySets: ?*anyopaque,
    pclsid: ?*anyopaque,
    cPropertySets: u32,
    ulColumnSize: usize,
    dbcid: DBID,
    wType: u16,
    bPrecision: u8,
    bScale: u8,
};

type
  DBID {.bycopy.} = object
    uGuid: _uGuid_e__Union
    eKind: uint32
    uName: _uName_e__Union

  DBCOLUMNDESC {.packed.} = object
    pwszTypeName: pointer
    pTypeInfo: pointer
    rgPropertySets: pointer
    pclsid: pointer
    cPropertySets: uint32
    ulColumnSize: uint
    dbcid: DBID
    wType: uint16
    bPrecision: uint8
    bScale: uint8

struct DBID
{
    _uGuid_e__Union uGuid;
    uint eKind;
    _uName_e__Union uName;
}

align(2)
struct DBCOLUMNDESC
{
    void* pwszTypeName;
    void* pTypeInfo;
    void* rgPropertySets;
    void* pclsid;
    uint cPropertySets;
    size_t ulColumnSize;
    DBID dbcid;
    ushort wType;
    ubyte bPrecision;
    ubyte bScale;
}