hidlib/UsbHidPort.cs

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using System;
using System.ComponentModel;
using System.Collections.Generic;
using System.Diagnostics;
using System.Text;
using System.Drawing;
using System.Windows.Forms;

namespace UsbLibrary
{
    /// <summary>
    /// This class provides an usb component. This can be placed ont to your form.
    /// </summary>
    [ToolboxBitmap(typeof(UsbHidPort), "UsbHidBmp.bmp")]
    public partial class UsbHidPort : Component
    {
        //private memebers
        private int                             product_id;
        private int                             vendor_id;
        private Guid                            device_class;
        private IntPtr                          usb_event_handle;
        private SpecifiedDevice                 specified_device;
        private IntPtr                          handle;
        //events
        /// <summary>
        /// This event will be triggered when the device you specified is pluged into your usb port on
        /// the computer. And it is completly enumerated by windows and ready for use.
        /// </summary>
        [Description("The event that occurs when a usb hid device with the specified vendor id and product id is found on the bus")]
        [Category("Embedded Event")]
        [DisplayName("OnSpecifiedDeviceArrived")]
        public event EventHandler               OnSpecifiedDeviceArrived;

        /// <summary>
        /// This event will be triggered when the device you specified is removed from your computer.
        /// </summary>
        [Description("The event that occurs when a usb hid device with the specified vendor id and product id is removed from the bus")]
        [Category("Embedded Event")]
        [DisplayName("OnSpecifiedDeviceRemoved")]
        public event EventHandler               OnSpecifiedDeviceRemoved;

        /// <summary>
        /// This event will be triggered when a device is pluged into your usb port on
        /// the computer. And it is completly enumerated by windows and ready for use.
        /// </summary>
        [Description("The event that occurs when a usb hid device is found on the bus")]
        [Category("Embedded Event")]
        [DisplayName("OnDeviceArrived")]
        public event EventHandler               OnDeviceArrived;

        /// <summary>
        /// This event will be triggered when a device is removed from your computer.
        /// </summary>
        [Description("The event that occurs when a usb hid device is removed from the bus")]
        [Category("Embedded Event")]
        [DisplayName("OnDeviceRemoved")]
        public event EventHandler               OnDeviceRemoved;

        /// <summary>
        /// This event will be triggered when data is recieved from the device specified by you.
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