Unknown source of beeping

On Thu, 18 Dec 2014 03:15:49 -0800, Uwe Sieber wrote:

OldGuy wrote:
NOTE: some apps like this detect USB drives but NOT USB WebCams.
Does this console app detect external USB WebCams?
If so, what API are you using to do so?

Yes, it shows arrival and removal events of any
device managed by the windows device manager.
It just registers a hidden window for receiving
device notifications of any device class:

HDEVNOTIFY hNotify = RegisterDeviceNotification(
hwndNotifyWin,
&dbh,
DEVICE_NOTIFY_WINDOW_HANDLE | DEVICE_NOTIFY_ALL_INTERFACE_CLASSES);


Uwe

Thanks!
I think that is the same as I am using in my little app I just wrote.
It does NOT detect my Logitec USB WebCam in and out but does detect other
USB and even other devices that are NOT USB.
Wondering why the WebCam does not register.

Have you tried a WebCam on your PC with your app?