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mouse driver

Hello,

We are writing a device driver for a USB mouse. First off, from everything I've read (yes, I've read all the pertinent docs), it appears an in-kernel driver is the way to go. Looking at the Darwin source, it looks as though a good starting point would be AppleUSBOpticalMouse (ie subclassing IOUSBHIDDriver). I first considered the AppleUSBMouse class and subclassing IOHIPointing from the HID family, but then I noticed that AppleUSBMouse is obsolete and has been for some time (did AppleUSBOpticalMouse replace this?). Which is the best approach? Also, I assume I would need my own user client for user space communication (as opposed to using an existing user client) - is there a good starting point for that? Sorry for the newbi-ness of the questions - this is all new to me.

Jeff 


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