D3DLIGHT7

using System;
using System.Runtime.InteropServices;

[StructLayout(LayoutKind.Sequential, CharSet = CharSet.Unicode)]
public struct D3DCOLORVALUE
{
    public float r;
    public float g;
    public float b;
    public float a;
}

[StructLayout(LayoutKind.Sequential, CharSet = CharSet.Unicode)]
public struct D3DVECTOR
{
    public float x;
    public float y;
    public float z;
}

[StructLayout(LayoutKind.Sequential, CharSet = CharSet.Unicode)]
public struct D3DLIGHT7
{
    public int dltType;
    public D3DCOLORVALUE dcvDiffuse;
    public D3DCOLORVALUE dcvSpecular;
    public D3DCOLORVALUE dcvAmbient;
    public D3DVECTOR dvPosition;
    public D3DVECTOR dvDirection;
    public float dvRange;
    public float dvFalloff;
    public float dvAttenuation0;
    public float dvAttenuation1;
    public float dvAttenuation2;
    public float dvTheta;
    public float dvPhi;
}

Imports System.Runtime.InteropServices

<StructLayout(LayoutKind.Sequential, CharSet:=CharSet.Unicode)>
Public Structure D3DCOLORVALUE
    Public r As Single
    Public g As Single
    Public b As Single
    Public a As Single
End Structure

<StructLayout(LayoutKind.Sequential, CharSet:=CharSet.Unicode)>
Public Structure D3DVECTOR
    Public x As Single
    Public y As Single
    Public z As Single
End Structure

<StructLayout(LayoutKind.Sequential, CharSet:=CharSet.Unicode)>
Public Structure D3DLIGHT7
    Public dltType As Integer
    Public dcvDiffuse As D3DCOLORVALUE
    Public dcvSpecular As D3DCOLORVALUE
    Public dcvAmbient As D3DCOLORVALUE
    Public dvPosition As D3DVECTOR
    Public dvDirection As D3DVECTOR
    Public dvRange As Single
    Public dvFalloff As Single
    Public dvAttenuation0 As Single
    Public dvAttenuation1 As Single
    Public dvAttenuation2 As Single
    Public dvTheta As Single
    Public dvPhi As Single
End Structure

import ctypes
from ctypes import wintypes

class D3DCOLORVALUE(ctypes.Structure):
    _fields_ = [
        ("r", ctypes.c_float),
        ("g", ctypes.c_float),
        ("b", ctypes.c_float),
        ("a", ctypes.c_float),
    ]

class D3DVECTOR(ctypes.Structure):
    _fields_ = [
        ("x", ctypes.c_float),
        ("y", ctypes.c_float),
        ("z", ctypes.c_float),
    ]

class D3DLIGHT7(ctypes.Structure):
    _fields_ = [
        ("dltType", ctypes.c_int),
        ("dcvDiffuse", D3DCOLORVALUE),
        ("dcvSpecular", D3DCOLORVALUE),
        ("dcvAmbient", D3DCOLORVALUE),
        ("dvPosition", D3DVECTOR),
        ("dvDirection", D3DVECTOR),
        ("dvRange", ctypes.c_float),
        ("dvFalloff", ctypes.c_float),
        ("dvAttenuation0", ctypes.c_float),
        ("dvAttenuation1", ctypes.c_float),
        ("dvAttenuation2", ctypes.c_float),
        ("dvTheta", ctypes.c_float),
        ("dvPhi", ctypes.c_float),
    ]

#[repr(C)]
pub struct D3DCOLORVALUE {
    pub r: f32,
    pub g: f32,
    pub b: f32,
    pub a: f32,
}

#[repr(C)]
pub struct D3DVECTOR {
    pub x: f32,
    pub y: f32,
    pub z: f32,
}

#[repr(C)]
pub struct D3DLIGHT7 {
    pub dltType: i32,
    pub dcvDiffuse: D3DCOLORVALUE,
    pub dcvSpecular: D3DCOLORVALUE,
    pub dcvAmbient: D3DCOLORVALUE,
    pub dvPosition: D3DVECTOR,
    pub dvDirection: D3DVECTOR,
    pub dvRange: f32,
    pub dvFalloff: f32,
    pub dvAttenuation0: f32,
    pub dvAttenuation1: f32,
    pub dvAttenuation2: f32,
    pub dvTheta: f32,
    pub dvPhi: f32,
}

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

type D3DCOLORVALUE struct {
	r float32
	g float32
	b float32
	a float32
}

type D3DVECTOR struct {
	x float32
	y float32
	z float32
}

type D3DLIGHT7 struct {
	dltType int32
	dcvDiffuse D3DCOLORVALUE
	dcvSpecular D3DCOLORVALUE
	dcvAmbient D3DCOLORVALUE
	dvPosition D3DVECTOR
	dvDirection D3DVECTOR
	dvRange float32
	dvFalloff float32
	dvAttenuation0 float32
	dvAttenuation1 float32
	dvAttenuation2 float32
	dvTheta float32
	dvPhi float32
}

type
  D3DCOLORVALUE = record
    r: Single;
    g: Single;
    b: Single;
    a: Single;
  end;

  D3DVECTOR = record
    x: Single;
    y: Single;
    z: Single;
  end;

  D3DLIGHT7 = record
    dltType: Integer;
    dcvDiffuse: D3DCOLORVALUE;
    dcvSpecular: D3DCOLORVALUE;
    dcvAmbient: D3DCOLORVALUE;
    dvPosition: D3DVECTOR;
    dvDirection: D3DVECTOR;
    dvRange: Single;
    dvFalloff: Single;
    dvAttenuation0: Single;
    dvAttenuation1: Single;
    dvAttenuation2: Single;
    dvTheta: Single;
    dvPhi: Single;
  end;

const D3DCOLORVALUE = extern struct {
    r: f32,
    g: f32,
    b: f32,
    a: f32,
};

const D3DVECTOR = extern struct {
    x: f32,
    y: f32,
    z: f32,
};

const D3DLIGHT7 = extern struct {
    dltType: i32,
    dcvDiffuse: D3DCOLORVALUE,
    dcvSpecular: D3DCOLORVALUE,
    dcvAmbient: D3DCOLORVALUE,
    dvPosition: D3DVECTOR,
    dvDirection: D3DVECTOR,
    dvRange: f32,
    dvFalloff: f32,
    dvAttenuation0: f32,
    dvAttenuation1: f32,
    dvAttenuation2: f32,
    dvTheta: f32,
    dvPhi: f32,
};

type
  D3DCOLORVALUE {.bycopy.} = object
    r: float32
    g: float32
    b: float32
    a: float32

  D3DVECTOR {.bycopy.} = object
    x: float32
    y: float32
    z: float32

  D3DLIGHT7 {.bycopy.} = object
    dltType: int32
    dcvDiffuse: D3DCOLORVALUE
    dcvSpecular: D3DCOLORVALUE
    dcvAmbient: D3DCOLORVALUE
    dvPosition: D3DVECTOR
    dvDirection: D3DVECTOR
    dvRange: float32
    dvFalloff: float32
    dvAttenuation0: float32
    dvAttenuation1: float32
    dvAttenuation2: float32
    dvTheta: float32
    dvPhi: float32

struct D3DCOLORVALUE
{
    float r;
    float g;
    float b;
    float a;
}

struct D3DVECTOR
{
    float x;
    float y;
    float z;
}

struct D3DLIGHT7
{
    int dltType;
    D3DCOLORVALUE dcvDiffuse;
    D3DCOLORVALUE dcvSpecular;
    D3DCOLORVALUE dcvAmbient;
    D3DVECTOR dvPosition;
    D3DVECTOR dvDirection;
    float dvRange;
    float dvFalloff;
    float dvAttenuation0;
    float dvAttenuation1;
    float dvAttenuation2;
    float dvTheta;
    float dvPhi;
}