Peter Hutterer c9df51b070 input: allow for master pointers to not have a button class.
There's devices (e.g. some barcode readers) that have axes but no buttons.
When such a device sends a motion event, the valuator and button class is
copied into the master pointer (i.e. removing the button class).
So we need a couple of extra sanity checks for the button class to exist.

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
2009-05-22 15:44:57 +10:00
2009-04-14 16:21:04 -04:00
2009-04-23 12:13:35 +10:00
2009-05-22 15:44:57 +10:00
2009-05-16 12:20:58 +10:00
2009-05-16 12:20:59 +10:00
2008-09-23 09:21:37 -07:00
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