public class TClass : System.Windows.Forms.Form

    {

        /// <summary>

        /// 设备对象，场景中所有图形对象的父对象

        /// </summary>

        private Device device = null;

        /// <summary>

        /// 坐标系四棱锥顶点缓冲

        /// </summary>

        VertexBuffer vertexBuffer = null;

        /// <summary>

        /// 此参数设置为必须，它定义了要创建的Direct3D设备的表示参数，如后台缓冲区的高度、宽度和像素格式、如何从后台缓冲区复制到前台缓存、以及屏幕显示的方式等等

        /// </summary>

        PresentParameters presentParameters;

        /// <summary>

        /// 暂停标志

        /// </summary>

        bool pause = false;

        /// <summary>

        /// 随机数，用来生成随机颜色用的

        /// </summary>

        Random rn = new Random();

        /// <summary>

        /// 构造函数，设置窗体大小

        /// </summary>

        public TClass()

        {

            this.ClientSize = new System.Drawing.Size(300, 300);

        }

        /// <summary>

        /// 初始化绘图环境

        /// </summary>

        /// <returns></returns>

        public bool InitializeGraphics()

        {

            try

            {

                presentParameters = new PresentParameters();

                //设置屏幕显示模式为窗口模式

                presentParameters.Windowed = true;

                //设置如何从后台缓冲区复制到前台缓冲区(SwapEffect.Discard表示缓冲区在显示后立即被舍弃,这样可以节省开销)

                presentParameters.SwapEffect = SwapEffect.Discard;

                //创建一个设备

                device = new Device(0, DeviceType.Hardware, this, CreateFlags.SoftwareVertexProcessing, presentParameters);

                //为设备释放订阅事件处理

                device.DeviceReset += new System.EventHandler(this.OnResetDevice);

                this.OnCreateDevice(device, null);

                this.OnResetDevice(device, null);

                pause = false;

                return true;

            }

            catch (DirectXException)

            {

                return false;

            }

        }

        /// <summary>

        /// 设备创建时建立顶点缓冲

        /// </summary>

        /// <param name="sender"></param>

        /// <param name="e"></param>

        public void OnCreateDevice(object sender, EventArgs e)

        {

            Device dev = (Device)sender;

            //创建顶点缓冲,有个顶点

            vertexBuffer = new VertexBuffer(typeof(CustomVertex.PositionColored), 18, dev, 0, CustomVertex.PositionColored.Format, Pool.Default);

            //为创建顶点缓存订阅事件处理

            vertexBuffer.Created += new System.EventHandler(this.OnCreateVertexBuffer);

            this.OnCreateVertexBuffer(vertexBuffer, null);

        }

        /// <summary>

        /// 设备撤销的事件处理

        /// </summary>

        /// <param name="sender"></param>

        /// <param name="e"></param>

        public void OnResetDevice(object sender, EventArgs e)

        {

            Device dev = (Device)sender;

            //关闭剔除模式，使我们能看见此四棱锥的前面和后面

            dev.RenderState.CullMode = Cull.None;

            // 关闭场景里的灯光，显示顶点自己的颜色

            dev.RenderState.Lighting = false;

        }

        /// <summary>

        /// 创建顶点缓存的事件处理

        /// </summary>

        /// <param name="sender"></param>

        /// <param name="e"></param>

        public void OnCreateVertexBuffer(object sender, EventArgs e)

        {

            VertexBuffer vb = (VertexBuffer)sender;

            CustomVertex.PositionColored[] verts = (CustomVertex.PositionColored[])vb.Lock(0, 0);

            //四棱锥原始的个点

            Vector3 vertex1 = new Vector3(25, 0, 0);

            Vector3 vertex2 = new Vector3(0, 0, -25);

            Vector3 vertex3 = new Vector3(-25, 0, 0);

            Vector3 vertex4 = new Vector3(0, 0, 25);

            Vector3 vertex5 = new Vector3(0, 25, 0);

            //四棱锥中包含个三角形，所以要构造个点来绘制

            verts[0].Position = vertex1;

            verts[1].Position = vertex2;

            verts[2].Position = vertex5;

            verts[3].Position = vertex2;

            verts[4].Position = vertex3;

            verts[5].Position = vertex5;

            verts[6].Position = vertex3;

            verts[7].Position = vertex4;

            verts[8].Position = vertex5;

            verts[9].Position = vertex4;

            verts[10].Position = vertex1;

            verts[11].Position = vertex5;

            verts[12].Position = vertex2;

            verts[13].Position = vertex1;

            verts[14].Position = vertex3;

            verts[15].Position = vertex3;

            verts[16].Position = vertex1;

            verts[17].Position = vertex4;

            //给每个点赋予随机颜色

            for (int i = 0; i < 18; i++)

            {

                verts[i].Color = Color.FromArgb(SetColor(), SetColor(), SetColor()).ToArgb();

            }

            vb.Unlock();

        }

        /// <summary>

        /// 返回到之间的一个随机数，用来生成随机颜色

        /// </summary>

        /// <returns></returns>

        public int SetColor()

        {

            int number = rn.Next(256);

            return number;

        }

        /// <summary>

        /// 设置摄像机的位置

        /// </summary>

        private void SetupCamera()

        {

            //设置世界矩阵，根据系统运行时间而变化

            device.Transform.World = Matrix.RotationAxis(new Vector3((float)Math.Cos(Environment.TickCount / 250.0f), 1, (float)Math.Sin(Environment.TickCount / 250.0f)), Environment.TickCount / 3000.0f);

            //设置摄像机的位置，它在z轴上-50处，看着原点，y轴为正方向

            device.Transform.View = Matrix.LookAtLH(new Vector3(0.0f, 0.0f, -50f), new Vector3(0.0f, 0.0f, 0.0f), new Vector3(0.0f, 1.0f, 0.0f));

            //设置摄像机的视界，角度为度，看的最近为,看的最远处为.不再这个视界中的影像都不会被显示

            device.Transform.Projection = Matrix.PerspectiveFovLH(((float)(float)Math.PI / 2), 1.0f, 10.0f, 200.0f);

        }

        /// <summary>

        /// 绘制图形

        /// </summary>

        public void Render()

        {

            if (device == null)

                return;

            if (pause)

                return;

            //背景设为绿色

            device.Clear(ClearFlags.Target, System.Drawing.Color.Blue, 1.0f, 0);

            //开始场景

            device.BeginScene();

            // 设置世界，视野和投影矩阵

            SetupCamera();

            // 给设备指定顶点缓存

            device.SetStreamSource(0, vertexBuffer, 0);

            //设置设备的顶点格式

            device.VertexFormat = CustomVertex.PositionColored.Format;

            //绘制图形，使用的方法为三角形列表，个数为个

            device.DrawPrimitives(PrimitiveType.TriangleList, 0, 6);

            //结束场景

            device.EndScene();

            //更新场景

            device.Present();

        }

        //重载OnPaint函数

        protected override void OnPaint(System.Windows.Forms.PaintEventArgs e)

        {

            //绘制图形

            this.Render();

        }

    }

using (TClass frm = new TClass())

            {

                if (!frm.InitializeGraphics()) // 初始化 Direct3D

                {

                    MessageBox.Show("不能初始化 Direct3D.程序将退出.");

                    return;

                }

                frm.Show();

                // While the form is still valid, render and process messages

                while (frm.Created)

                {

                    frm.Render();

                    Application.DoEvents(); //处理当前在消息队列中的所有 Windows 消息

                }

            }