Private const uint GenericWrite = 1073741824 Private const uint GenericRead = 2147483648 Private const int DigcfDeviceinterface = 16 Here are two classes for dealing with USB/Hid at the raw Windows API level: Different platforms have different APIs for dealing with both USB and Hid. Hid is usually a little easier to work with than direct USB.

A USB device may or may not be a Hid device and vice versa. USB devices usually fall in to two categories: Hid, and USB. Otherwise, you will receive a COM object error at runtime when closing. You have to make sure you call the Dispose() method when closing your application. Void watcher_EventRemoved(object sender, EventArrivedEventArgs e) Void watcher_EventArrived(object sender, EventArrivedEventArgs e) / Used to dispose of the USB device watchers when the USBControl class is disposed of. WatcherRemove.Query = new WqlEventQuery('SELECT * FROM Win32_DeviceChangeEvent WHERE EventType = 3') WatcherRemove.EventArrived += new EventArrivedEventHandler(watcher_EventRemoved) var queryRemove = new WqlEventQuery('SELECT * FROM Win32_DeviceChangeEvent WHERE EventType = 3') WatcherRemove = new ManagementEventWatcher() WatcherAttach.Query = new WqlEventQuery('SELECT * FROM Win32_DeviceChangeEvent WHERE EventType = 2')

WatcherAttach.EventArrived += new EventArrivedEventHandler(watcher_EventArrived) var queryAttach = new WqlEventQuery('SELECT * FROM Win32_DeviceChangeEvent WHERE EventType = 2') WatcherAttach = new ManagementEventWatcher() Private ManagementEventWatcher watcherRemove Private ManagementEventWatcher watcherAttach used for monitoring plugging and unplugging of USB devices. I used the following code to detect when USB devices were plugged and unplugged from my computer: class USBControl : IDisposable

Mac not detecting usb device endpoint