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USB device sometimes could not be opend
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USB device sometimes could not be opend



Hello, all.

I'm now writing CASIO's USB label printer, or KP-C10 utiliy for Mac OS X
with C99. That application is available at
http://www.ravi.ne.jp/~shige/?EggX (this page is written in Japanese)

When trying to open that device with USBDeviceOpen(), it sometims fails
with error code -536870203. (0xe00002c5)
# This error never occures with my iBook.

The error code meansthat somebody already hold the device (who?)
and my app can not open it, I think. Is this right?

If so, my questions are:

(1) How can I know who has been opened that device?
(2) In such case, waht's the best way to recover this error?

My environment is:
iBook (Dual USB, 500Mhz, 64 + 512M memory, 10GB hard drive)
Mac OS X 10.2.8 without classic

Thanks for your help.

--
Osamu Shigematsu <email@hidden>
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