On Fri, Apr 22, 2011 at 10:10:32AM +0200, Paolo Olivo wrote: > Hello everyone, > > I am developing a mt toolkit, which I would like to interface to > libmtdev. I am using a Dell XT2 and a 3M M2256PW touchscreen on Ubuntu > 10.10, kernel 2.6.35-28-generic, libmtdev1.1.0. > > I started capturing mtdev events, but I found something weird. I don't > know if they are bugs or it is simply my misunderstanding. > > First, using function "mtdev_has_mt_event" on the XT2 and passing > ABS_MT_SLOT and ABS_MT_TRACKING_ID, in both cases it returns 0, while > I actually receive ABS_MT_SLOT and ABS_MT_TRACKING_ID events using > "mtdev_get". 3M is working fine.
The XT2 is using MT protocol type A, and mtdev is emulating the slot and tracking values. The mtdev does not alter the actual kernel device, therefore mtdev_has_mt_event() returns false for the XT2. Cheers, Henrik _______________________________________________ Mailing list: https://launchpad.net/~multi-touch-dev Post to : multi-touch-dev@lists.launchpad.net Unsubscribe : https://launchpad.net/~multi-touch-dev More help : https://help.launchpad.net/ListHelp
