On 1/20/03 7:47 PM, Matthew Lehrian wrote:
> I'm trying to use the asynchronous connection handling for my USB
> device. I have the callback functions working and detect when the
> device is added and removed.
>
> When a device is connected, I stash a reference away (io_service_t).
> When I get a device disconnected event, I can't figure out how to tell
> which device has been disconnected. Please help!
Take a look a the following sample code:
Another sample that demonstrates how to use IOKitLib and IOUSBLib to set up
asynchronous callbacks when a USB device is attached to or removed from the
system is located at:
http://developer.apple.com/samplecode/Sample_Code/Devices_and_Hardware/USB/U
SBPrivateDataSample.htm
It also shows how to associate arbitrary data with each device instance
(which can be used to distinguish between identical devices). BTW, don't
use the io_service_t. Use the location ID.
--
Fernando Urbina mailto:email@hidden
USB Technology Team work: 719.534.9387
Apple Computer, Inc. fax: 719.532.0981
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