form1.cs

VC#编写的例程

using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
using System.Threading;
using CyUSB;
using System.Runtime.InteropServices;

namespace Screamer
{

	public class Form1 : System.Windows.Forms.Form
	{
        bool bVista;
        private System.Diagnostics.PerformanceCounter CpuCounter;

		USBDeviceList	usbDevices;
		CyUSBDevice		MyDevice;
        CyUSBEndPoint   EndPoint;

		DateTime        t1,t2;
		TimeSpan        elapsed;
		double	        XferBytes;
		long		    xferRate;

        int BufSz; 
        int QueueSz;
        int PPX;
        int IsoPktBlockSize;
        int Successes;
        int Failures;
        
        Thread tListen;
        bool bRunning;

        // These 2 needed for ListenThread to update the UI
        delegate void UpdateUICallback();
        UpdateUICallback updateUI;

        // These 2 needed to close the app from the ListenThread (exception handling)
        delegate void ExceptionCallback();
        ExceptionCallback handleException;

		public Form1()
		{
            bVista = (Environment.OSVersion.Version.Major == 6);

			// Required for Windows Form Designer support
			InitializeComponent();

            // Late setup of the CPU monitor - (Bails-out if in Vista)
            InitializePeformanceMonitor();

            // Hide the CPU load monitor if running in Windows Vista
            // Detecting the CPU load is a security violation in Vista
            CPULoadBox.Visible = !bVista;

            // Setup the callback routine for updating the UI
            updateUI = new UpdateUICallback(StatusUpdate);

            // Setup the callback routine for NullReference exception handling
            handleException = new ExceptionCallback(ThreadException);

            // Create the list of USB devices attached to the CyUSB.sys driver.
            usbDevices = new USBDeviceList(CyConst.DEVICES_CYUSB, new App_PnP_Callback(PnP_Event_Handler));

			SetDevice();
		}


		public  void PnP_Event_Handler(IntPtr pnpEvent, IntPtr hRemovedDevice)
		{
			if (pnpEvent.Equals(CyConst.DBT_DEVICEREMOVECOMPLETE)) 
			{
				usbDevices.Remove(hRemovedDevice);
                MyDevice = null;
                EndPoint = null;

				SetDevice();
			}

			if (pnpEvent.Equals(CyConst.DBT_DEVICEARRIVAL)) 
			{
				usbDevices.Add();
				SetDevice();
			}
		}


		private void SetDevice()
		{
			USBDevice dev = usbDevices[0x04B4,0x1003];

            if (dev != null)
            {
                MyDevice = (CyUSBDevice)dev;

                GetEndpointsOfNode(MyDevice.Tree);
                if (EndPointsComboBox.Items.Count > 0)
                {
                    EndPointsComboBox.SelectedIndex = 0;
                    StartBtn.Enabled = true;
                }
            }
            else
            {
                StartBtn.Enabled = false;
                EndPointsComboBox.Items.Clear();
                EndPointsComboBox.Text = "";
            }


		}


        // Recursive routine populates EndPointsComboBox with strings 
        // representing all the endpoints in the device.
        private void GetEndpointsOfNode(TreeNode devTree)
        {
            foreach (TreeNode node in devTree.Nodes)
            {
                if (node.Nodes.Count > 0)
                    GetEndpointsOfNode(node);
                else
                {
                    CyUSBEndPoint ept = node.Tag as CyUSBEndPoint;

                    if (!node.Text.Contains("Control"))
                    {
                        CyUSBInterface ifc = node.Parent.Tag as CyUSBInterface;

                        string s = string.Format("ALT-{0}, {1} Byte, {2}", ifc.bAlternateSetting, ept.MaxPktSize, node.Text);
                        EndPointsComboBox.Items.Add(s);
                    }
                }
            }

        }



		/// <summary>
		/// Clean up any resources being used.
		/// </summary>
		protected override void Dispose( bool disposing )
		{
			if( disposing )
			{
				if (components != null) 
				{
					components.Dispose();
				}
			}
			base.Dispose( disposing );
		}

        private void InitializePeformanceMonitor()
        {
            // This isn't allowed in Vista.
            if (bVista) return;

            CpuCounter = new System.Diagnostics.PerformanceCounter();
            ((System.ComponentModel.ISupportInitialize)(CpuCounter)).BeginInit();

            CpuCounter.CategoryName = "Processor";
            CpuCounter.CounterName = "% Processor Time";
            CpuCounter.InstanceName = "_Total";

            ((System.ComponentModel.ISupportInitialize)(CpuCounter)).EndInit();

        }
        

        #region Windows Form Designer generated code

        private System.Windows.Forms.MainMenu mainMenu;
        private System.Windows.Forms.MenuItem menuItem1;
        private System.Windows.Forms.MenuItem menuItem2;
        private System.Windows.Forms.MenuItem ExitItem;
        private System.Windows.Forms.MenuItem menuItem3;
        private System.Windows.Forms.MenuItem AboutItem;
        private System.Windows.Forms.Label label1;
        private System.Windows.Forms.Label label2;
        private System.Windows.Forms.Label label3;
        private System.Windows.Forms.Label label4;
        private System.Windows.Forms.ComboBox PpxBox;
        private System.Windows.Forms.ComboBox QueueBox;
        private System.Windows.Forms.TextBox SuccessBox;
        private System.Windows.Forms.GroupBox groupBox1;
        private System.Windows.Forms.ProgressBar ProgressBar;
        private System.Windows.Forms.Button StartBtn;
        private System.Windows.Forms.Label ThroughputLabel;
        private System.Windows.Forms.TextBox FailuresBox;
        private ComboBox EndPointsComboBox;
        private Label label5;
        private GroupBox CPULoadBox;
        private Label CpuLabel;
        private ProgressBar CpuBar;
        private System.Windows.Forms.Timer PerfTimer;
        
        private IContainer components;
        
        /// <summary>
		/// Required method for Designer support - do not modify
		/// the contents of this method with the code editor.
		/// </summary>
		private void InitializeComponent()
		{
            this.components = new System.ComponentModel.Container();
            System.ComponentModel.ComponentResourceManager resources = new System.ComponentModel.ComponentResourceManager(typeof(Form1));
            this.mainMenu = new System.Windows.Forms.MainMenu(this.components);
            this.menuItem1 = new System.Windows.Forms.MenuItem();
            this.menuItem2 = new System.Windows.Forms.MenuItem();
            this.ExitItem = new System.Windows.Forms.MenuItem();
            this.menuItem3 = new System.Windows.Forms.MenuItem();
            this.AboutItem = new System.Windows.Forms.MenuItem();
            this.label1 = new System.Windows.Forms.Label();
            this.label2 = new System.Windows.Forms.Label();
            this.label3 = new System.Windows.Forms.Label();
            this.label4 = new System.Windows.Forms.Label();
            this.PpxBox = new System.Windows.Forms.ComboBox();
            this.QueueBox = new System.Windows.Forms.ComboBox();
            this.SuccessBox = new System.Windows.Forms.TextBox();
            this.FailuresBox = new System.Windows.Forms.TextBox();
            this.groupBox1 = new System.Windows.Forms.GroupBox();
            this.ThroughputLabel = new System.Windows.Forms.Label();
            this.ProgressBar = new System.Windows.Forms.ProgressBar();
            this.StartBtn = new System.Windows.Forms.Button();
            this.EndPointsComboBox = new System.Windows.Forms.ComboBox();
            this.label5 = new System.Windows.Forms.Label();
            this.CPULoadBox = new System.Windows.Forms.GroupBox();
            this.CpuLabel = new System.Windows.Forms.Label();
            this.CpuBar = new System.Windows.Forms.ProgressBar();
            this.PerfTimer = new System.Windows.Forms.Timer(this.components);

            this.groupBox1.SuspendLayout();
            this.CPULoadBox.SuspendLayout();
            this.SuspendLayout();
            // 
            // mainMenu
            // 
            this.mainMenu.MenuItems.AddRange(new System.Windows.Forms.MenuItem[] {
            this.menuItem1,
            this.menuItem3});
            // 
            // menuItem1
            // 
            this.menuItem1.Index = 0;
            this.menuItem1.MenuItems.AddRange(new System.Windows.Forms.MenuItem[] {
            this.menuItem2,
            this.ExitItem});
            this.menuItem1.Text = "File";
            // 
            // menuItem2
            // 
            this.menuItem2.Index = 0;
            this.menuItem2.Text = "-";
            // 
            // ExitItem
            // 
            this.ExitItem.Index = 1;
            this.ExitItem.Text = "Exit";
            this.ExitItem.Click += new System.EventHandler(this.ExitItem_Click);
            // 
            // menuItem3
            // 
            this.menuItem3.Index = 1;
            this.menuItem3.MenuItems.AddRange(new System.Windows.Forms.MenuItem[] {
            this.AboutItem});
            this.menuItem3.Text = "Help";
            // 
            // AboutItem
            // 
            this.AboutItem.Index = 0;
            this.AboutItem.Text = "About";
            this.AboutItem.Click += new System.EventHandler(this.AboutItem_Click);
            // 
            // label1
            // 
            this.label1.Location = new System.Drawing.Point(16, 58);
            this.label1.Name = "label1";
            this.label1.Size = new System.Drawing.Size(89, 16);
            this.label1.TabIndex = 0;
            this.label1.Text = "Packets per Xfer";
            this.label1.TextAlign = System.Drawing.ContentAlignment.BottomLeft;
            // 
            // label2
            // 
            this.label2.Location = new System.Drawing.Point(16, 97);
            this.label2.Name = "label2";
            this.label2.Size = new System.Drawing.Size(89, 17);
            this.label2.TabIndex = 1;
            this.label2.Text = "Xfers to Queue";
            this.label2.TextAlign = System.Drawing.ContentAlignment.BottomLeft;
            // 
            // label3
            // 
            this.label3.Location = new System.Drawing.Point(215, 58);
            this.label3.Name = "label3";
            this.label3.Size = new System.Drawing.Size(64, 17);
            this.label3.TabIndex = 2;
            this.label3.Text = "Successes";
            this.label3.TextAlign = System.Drawing.ContentAlignment.BottomLeft;
            // 
            // label4
            // 
            this.label4.Location = new System.Drawing.Point(215, 99);
            this.label4.Name = "label4";
            this.label4.Size = new System.Drawing.Size(64, 16);
            this.label4.TabIndex = 3;
            this.label4.Text = "Failures";
            this.label4.TextAlign = System.Drawing.ContentAlignment.BottomLeft;
            // 
            // PpxBox
            // 
            this.PpxBox.Items.AddRange(new object[] {
            "1",
            "2",
            "4",
            "8",
            "16",
            "32",
            "64",
            "128"});
            this.PpxBox.Location = new System.Drawing.Point(111, 58);
            this.PpxBox.Name = "PpxBox";
            this.PpxBox.Size = new System.Drawing.Size(64, 21);
            this.PpxBox.TabIndex = 1;
            this.PpxBox.Text = "8";
            this.PpxBox.SelectedIndexChanged += new System.EventHandler(this.PpxBox_SelectedIndexChanged);
            // 
            // QueueBox
            // 
            this.QueueBox.Items.AddRange(new object[] {
            "1",
            "2",
            "4",
            "8",
            "16",
            "32",
            "64",
            "128"});
            this.QueueBox.Location = new System.Drawing.Point(111, 97);
            this.QueueBox.Name = "QueueBox";
            this.QueueBox.Size = new System.Drawing.Size(64, 21);
            this.QueueBox.TabIndex = 2;
            this.QueueBox.Text = "16";
            // 
            // SuccessBox
            // 
            this.SuccessBox.Location = new System.Drawing.Point(279, 58);
            this.SuccessBox.Name = "SuccessBox";
            this.SuccessBox.Size = new System.Drawing.Size(72, 20);
            this.SuccessBox.TabIndex = 6;
            this.SuccessBox.TabStop = false;
            this.SuccessBox.Text = "0";
            this.SuccessBox.TextAlign = System.Windows.Forms.HorizontalAlignment.Right;
            // 
            // FailuresBox
            // 
            this.FailuresBox.Location = new System.Drawing.Point(279, 98);
            this.FailuresBox.Name = "FailuresBox";
            this.FailuresBox.Size = new System.Drawing.Size(72, 20);
            this.FailuresBox.TabIndex = 7;
            this.FailuresBox.TabStop = false;
            this.FailuresBox.Text = "0";
            this.FailuresBox.TextAlign = System.Windows.Forms.HorizontalAlignment.Right;
            // 
            // groupBox1
            // 
            this.groupBox1.Controls.Add(this.ThroughputLabel);
            this.groupBox1.Controls.Add(this.ProgressBar);
            this.groupBox1.Location = new System.Drawing.Point(19, 172);
            this.groupBox1.Name = "groupBox1";
            this.groupBox1.Size = new System.Drawing.Size(330, 60);
            this.groupBox1.TabIndex = 8;
            this.groupBox1.TabStop = false;
            this.groupBox1.Text = " Throughput (KB/s) ";
            // 
            // ThroughputLabel
            // 
            this.ThroughputLabel.Font = new System.Drawing.Font("Microsoft Sans Serif", 8.25F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((byte)(0)));
            this.ThroughputLabel.Location = new System.Drawing.Point(114, 38);
            this.ThroughputLabel.Name = "ThroughputLabel";
            this.ThroughputLabel.Size = new System.Drawing.Size(100, 16);
            this.ThroughputLabel.TabIndex = 1;
            this.ThroughputLabel.Text = "0";
            this.ThroughputLabel.TextAlign = System.Drawing.ContentAlignment.BottomCenter;
            // 
            // ProgressBar
            // 
            this.ProgressBar.ForeColor = System.Drawing.SystemColors.HotTrack;
            this.ProgressBar.Location = new System.Drawing.Point(16, 25);
            this.ProgressBar.Maximum = 40000;
            this.ProgressBar.Name = "ProgressBar";
            this.ProgressBar.Size = new System.Drawing.Size(294, 10);
            this.ProgressBar.TabIndex = 0;