Hi Anthony,
Unfortunately, the HID Manager doesn't support USB mice and keyboards in
10.1.x. These devices are tied directly to the old IOHIDSystem and are
not of type "IOHIDDevice". This explains why the matching iterator did
not contain any objects.
We are currently transitioning support of these device to the HID
Manager. For 10.2, you can expect to at least be able to grab the mouse
in your iterator. Supporting keyboard events has presented a few
issues, and most likely will not be supported in 10.2.
Regards,
Rob
> From: Anthony Melidy <email@hidden>
> Date: Wed Mar 27, 2002 11:13:44 AM US/Pacific
> To: email@hidden
> Subject: IOServiceGetMatchingServices() returning empty iterator
>
> Hi,
>
> I copied sample code directly from "Working With HID Class Device
> Interfaces". It did not work.
>
> hidMatchDictionary = IOServiceMatching(kIOHIDDeviceKey);
> // produced a matching dictionary
>
> ioReturnValue = IOServiceGetMatchingServices(masterPort,
> hidMatchDictionary, hidObjectIterator);
> // returned empty iterator (with no error).
>
> Then I replaced kIOHIDDeviceKey with kIOUSBDeviceClassName and did get
> an iterator with the new matching dictionary.
>
> My mac has an Apple Keyboard and Apple Mouse. Are they both not HID
> devices in OS X?
>
> Should I not have obtained an iterator with 2 items in the first case?
> Is there a problem with IOServiceGetMatchingServices()?
>
> Any Ideas?
>
> anthony
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