Re: HID Utilities Library

• Subject: Re: HID Utilities Library
• From: Ray <email@hidden>
• Date: Wed, 18 Sep 2002 16:17:42 -0500
• User-agent: Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.0.1) Gecko/20020823 Netscape/7.0

On Tue, 17 Sep 2002 16:15:17 -0500, Ray <email@hidden> wrote:

Has the HID Utilities Lib code change recently (mainly for 10.2)?

Nope. But the HID Family drivers did add usage page & usage matching in
Jaguar. This means that prior to Jaguar that the I/O iterator would returns
all devices (ignoring whether the page & usages matched or not).

What this means is that if you plagiarized our sample code and used this
line as-is:

HIDBuildDeviceList(kHIDPage_GenericDesktop, kHIDUsage_GD_GamePad);

Then you still got ALL HID devices (not just game pads) until Jaguar shipped
and then suddenly all your non-gamepad devices disappeared.

To fix this you can just pass zero's for the page & usage:

HIDBuildDeviceList(0, 0);

This will return all HID devices.

I have a user with a "Belkin Nostromo n50" USB joystick/like device that
doesn't show up when enumerating the devices.

This is most likely the problem above.

He has said some games show the device up with a blank name, but HID utilities
didn't even do that for me.

A blank name is probably something else.

Does anyone have any thoughts in this?

No. ;-)

I'm tempted to go to best buy and get one to test with and then return it.

Hold off until you check you HIDBuildDeviceList code. ;-)


--
Enjoy,
George Warner,
Mixed Mode Magic Fragment Scientist
Apple Developer Technical Support (DTS)

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