hidlib/HIDDevice.cs

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using System;
using System.IO;
using System.Text;
using System.Runtime.InteropServices;
using Microsoft.Win32.SafeHandles;

namespace UsbLibrary
{
	#region Custom exception
	/// <summary>
	/// Generic HID device exception
	/// </summary>
    public class HIDDeviceException : ApplicationException
    {
        public HIDDeviceException(string strMessage) : base(strMessage) { }

        public static HIDDeviceException GenerateWithWinError(string strMessage)
        {
            return new HIDDeviceException(string.Format("Msg:{0} WinEr:{1:X8}", strMessage, Marshal.GetLastWin32Error()));
        }

        public static HIDDeviceException GenerateError(string strMessage)
        {
            return new HIDDeviceException(string.Format("Msg:{0}", strMessage));
        }
    }
	#endregion
	/// <summary>
	/// Abstract HID device : Derive your new device controller class from this
	/// </summary>
    public abstract class HIDDevice : Win32Usb, IDisposable
    {
		#region Privates variables
		/// <summary>Filestream we can use to read/write from</summary>
        private FileStream m_oFile;
		/// <summary>Length of input report : device gives us this</summary>
		private int m_nInputReportLength;
		/// <summary>Length if output report : device gives us this</summary>
		private int m_nOutputReportLength;
		/// <summary>Handle to the device</summary>
		private IntPtr m_hHandle;
		#endregion

        #region IDisposable Members
		/// <summary>
		/// Dispose method
		/// </summary>
        public void Dispose()
        {
            Dispose(true);
            GC.SuppressFinalize(this);
        }
		/// <summary>
		/// Disposer called by both dispose and finalise
		/// </summary>
		/// <param name="bDisposing">True if disposing</param>
        protected virtual void Dispose(bool bDisposing)
        {
            try
            {