DirextX编程

开发平台：
C#

Input.cs：源码内容
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// Copyright (c) 三峡大学水利与环境学院 肖泽云. All rights reserved.  //
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using System;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Windows.Forms;
using Microsoft.DirectX;
using Microsoft.DirectX.Direct3D;
using Microsoft.DirectX.DirectInput;
namespace 输入事件
{
    public partial class Input : Form
    {
        Microsoft.DirectX.Direct3D.Device device = null;//定义绘图设备
        private Microsoft.DirectX.DirectInput.Device keyboard;//定义键盘设备
        private Microsoft.DirectX.DirectInput.Device mouseDevice;//定义鼠标设备
        public Input()
        {
            this.ClientSize = new Size(800, 600);//指定窗体尺寸
            this.Text = "输入事件";//指定窗体标题
        }
        public bool InitializeDirect3D()
        {
            try
            {
                PresentParameters presentParams = new PresentParameters();
                presentParams.Windowed = true; //指定以Windows窗体形式显示
                presentParams.SwapEffect = SwapEffect.Discard; //当前屏幕绘制后它将自动从内存中删除
                device = new Microsoft.DirectX.Direct3D.Device(0, Microsoft.DirectX.Direct3D.DeviceType.Hardware, this, CreateFlags.SoftwareVertexProcessing, presentParams); //实例化device对象
                return true;
            }
            catch (DirectXException e)
            {
                MessageBox.Show(e.ToString(), "Error"); //处理异常
                return false;
            }
        }
        public void InitializeKeyboard()
        {
            keyboard = new Microsoft.DirectX.DirectInput.Device(SystemGuid.Keyboard);//实例化键盘对象
            keyboard.SetCooperativeLevel(this, CooperativeLevelFlags.Background | CooperativeLevelFlags.NonExclusive);
            keyboard.Acquire();//链接键盘设备
        }
        public void InitialMouse()
        {            
            mouseDevice = new Microsoft.DirectX.DirectInput.Device(SystemGuid.Mouse);//实例化鼠标对象
            mouseDevice.Properties.AxisModeAbsolute = true;
            mouseDevice.SetCooperativeLevel(this, CooperativeLevelFlags.NonExclusive | CooperativeLevelFlags.Background);
            mouseDevice.Acquire();            
        }
        private void KeyboardListen()
        {
            KeyboardState keys = keyboard.GetCurrentKeyboardState();
            if (keys[Key.Escape])
            {
                DialogResult result=MessageBox.Show("是否退出程序？","提示",MessageBoxButtons.YesNo);
                if (result == DialogResult.Yes)
                {
                    Application.Exit();
                }               
            }            
        }
        private void MouseListen()
        {
            MouseState mouseState = mouseDevice.CurrentMouseState;
            byte[] buttons = mouseState.GetMouseButtons();
            string info = "Mouse:";
            info += "X:" + mouseState.X + " ";
            info += "Y:" + mouseState.Y + " ";
            info += "Z:" + mouseState.Z + " ";
            for (int i = 0; i < buttons.Length; i++)
            {
                if (buttons[i] != 0)
                {
                    switch (i)
                    {
                        case 0:
                            MessageBox.Show(info + "点击左键！");
                            break;
                        case 1:
                            MessageBox.Show(info + "点击右键！");                            
                            break;
                        case 2:
                            MessageBox.Show(info + "点击中键！");
                            break;
                    }
                }
            }
        }
        public void Render()
        {
            if (device == null)   //如果device为空则不渲染
            {
                return;
            }
            Vector3 eye = new Vector3(30, 0, -30);
            Vector3 at = new Vector3(0, 0, 0);
            Vector3 up = new Vector3(0, 1, 0);
            Matrix viewMatrix = Matrix.LookAtLH(eye, at, up);
            Matrix projection = Matrix.PerspectiveFovLH((float)Math.PI / 4, this.Width/this.Height, 1.0f, 50.0f);
            device.Transform.Projection = projection;
            device.Transform.View = viewMatrix;
            device.RenderState.Lighting = false;
            device.Clear(ClearFlags.Target, Color.DarkSlateBlue, 1.0f, 0);  //清除windows界面为深蓝色
            device.BeginScene();
            //在此添加渲染图形代码
            CustomVertex.PositionColored[] vertices = new CustomVertex.PositionColored[3];//定义顶点
            vertices[0].Position = new Vector3(0f, 0f, 0f);
            vertices[0].Color = Color.Red.ToArgb();
            vertices[1].Position = new Vector3(5f, 10f, 0f);
            vertices[1].Color = Color.Green.ToArgb();
            vertices[2].Position = new Vector3(10f, 0f, 0f);
            vertices[2].Color = Color.Yellow.ToArgb();
            device.VertexFormat = CustomVertex.PositionColored.Format;
            device.DrawUserPrimitives(PrimitiveType.TriangleList, 1, vertices);
            device.EndScene();
            device.Present();
            
            //MouseListen();//添加鼠标设备监听函数
            KeyboardListen();//添加键盘设备监听函数
        }
        protected override void OnMouseDown(MouseEventArgs e)
        {
            base.OnMouseDown(e);
            MessageBox.Show("鼠标按下的位置在：X="+e.X.ToString() + ",Y=" + e.Y.ToString());
        }
        static void Main()
        {
            Input Input = new Input(); //创建窗体对象
            if (Input.InitializeDirect3D() == false) //检查Direct3D是否启动
            {
                MessageBox.Show("无法启动Direct3D！", "错误！");
                return;
            }
            Input.InitializeKeyboard();//初始化键盘设备
            Input.InitialMouse();//初始化鼠标设备
            Input.Show(); //如果一切都初始化成功，则显示窗体
            while (Input.Created) //设置一个循环用于实时更新渲染状态
            {
                Input.Render(); //保持device渲染，直到程序结束            
                Application.DoEvents(); //处理键盘鼠标等输入事件
            }
        }
    }
}

						