Re: WinUSB: How to tell if the device has gone
- From: "Doron Holan [MSFT]" <doronh@xxxxxxxxxxxxxxxxxxxx>
- Date: Fri, 22 Aug 2008 09:43:58 -0700
register for pnp handle notifications on the HANDLE that you opened with RegisterDeviceNotification. you will be told when the usb device has been unplugged
d
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"Bill Davy" <Bill@xxxxxxxxxxxxxxx> wrote in message news:u0LAM7FBJHA.2476@xxxxxxxxxxxxxxxxxxxxxxx
At present, I send a control port message and do not get a reply and the error code is something about a device is not functoning. Is there anyway to find out that this has happened without doing the control transfer? I'd like to know so that (a) I can tell the user that the device has gone away, and (b) perhaps relate its going away to something else happening in the system at the same time.
From USBTrace I know that nothing goes down the stack to the USB bus.
TIA,
Bill
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- References:
- WinUSB: How to tell if the device has gone
- From: Bill Davy
- WinUSB: How to tell if the device has gone
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