public DeviceDetector(MessageHandler handler, Form form)
{
this.handler = handler;
this.form = form;
usbQuery = new WMIUsbQuery();
usbQuery.AddUSBEventWatcher(USBEventHandler, USBEventHandler, new TimeSpan(0, 0, 3));
Thread thread = new Thread(new ParameterizedThreadStart(this.updateDeviceCount));
thread.Start(null);
}
private void USBEventHandler(Object sender, EventArrivedEventArgs e)
{
if (e.NewEvent.ClassPath.ClassName == "__InstanceCreationEvent" || e.NewEvent.ClassPath.ClassName == "__InstanceDeletionEvent")
{
ManagementBaseObject mbo = e.NewEvent["TargetInstance"] as ManagementBaseObject;
if (mbo != null && mbo.ClassPath.ClassName == "Win32_USBControllerDevice")
{
String dependent = (mbo["Dependent"] as String).Split(new Char[] { '=' })[1];
// string VIDPID = "VID_" + vid.ToString("X4") + "&PID_" + pid.ToString("X4") + "&MI_" + mi.ToString("D2");
deviceCount = WMIUsbQuery.GetDeviceCount();
form.Invoke(handler, Messages.MSG_UPDATE_DEVICE_COUNT, deviceCount);
}
}
}
private void updateDeviceCount(object o)
{
deviceCount = WMIUsbQuery.GetDeviceCount();
form.Invoke(handler, Messages.MSG_UPDATE_DEVICE_COUNT, deviceCount);
}
