On 8 Mar 2007, at 20:09, Christopher Mackey
<email@hidden> wrote:
Subject: USB example (Carbon)
Hello,
I was wonder if any one had an example of a project in which a USB
device is
attached to a mac, and a user interface is running at the same time. I
have
not been able to find anything along the lines of what I am trying to
do.
Any help that you can give me will be greatly appreciated.
Thanks
Christopher Mackey
Hi Christopher
Not sure what you're after here - do you mean the OS to start an
application when the device is plugged in, or do you have an
application running already that needs to respond appropriately when
the device is plugged in or unplugged?
The former case will require you to write a kernel extension so that
the OS is primed to wait for the device to appear on the USB ports. The
latter case is covered by the USBPrivateDataSample example which
demonstrates how to use IOKitLib and IOUSBLib to set up asynchronous
callbacks when a USB device is attached to, or removed from, the
system. It also shows how to associate arbitrary data with each device
instance.
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