From: Joonyoung Shim <jy0922.shim@samsung.com>
To: linux-input@vger.kernel.org
Cc: rydberg@euromail.se, dmitry.torokhov@gmail.com, jkosina@suse.cz
Subject: Questions about Multi-touch Protocal
Date: Tue, 05 Jan 2010 15:18:00 +0900 [thread overview]
Message-ID: <4B42D998.4050303@samsung.com> (raw)
Hi, all.
I have some questions about Multi-touch(MT) Protocal.
First, what is the purpose of ABS_MT_TOUCH_MAJOR event? I wonder how
it is used at userspace side.
Should the ABS_MT_TOUCH_MAJOR be the mininum set of events for multi
touch? I'm not sure whether this question is valid because of first
question.
Finally, what is difference of ABS_MT_TOUCH_MAJOR and
ABS_MT_WIDTH_MAJOR?
I read the MT Protocol document of kernel, but i cannot understand above
things clearly.
Thanks.
next reply other threads:[~2010-01-05 6:18 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-01-05 6:18 Joonyoung Shim [this message]
2010-01-05 12:08 ` Questions about Multi-touch Protocal Henrik Rydberg
2010-01-05 12:42 ` Florian Echtler
2010-01-05 12:55 ` Henrik Rydberg
2010-01-05 17:49 ` Dmitry Torokhov
2010-01-06 0:49 ` Joonyoung Shim
2010-01-13 20:21 ` Henrik Rydberg
2010-01-13 22:25 ` Peter Hutterer
2010-01-14 0:35 ` Henrik Rydberg
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