I've got a fresh install of Kubuntu 14.04 and Qt Creator/5.2.1, and I'm trying to get multi-touch working for the example applications like photosurface.
My input device is an Acer T272HL 10 point multi-touchscreen, xinput refers to it as "Advanced Silicon S.A CoolTouch(TM) System", and I've seen it tracking multiple touches using geisview, but nothing else in the system seems to recognize any multi-touch activity.
Any ideas how to get Qt to start listening to the same "channel" that geisview is using to get those multi-touches?
Thanks,
Update: Don't ask why, but I had 2 USB mice plugged in. Removing the extra mouse enabled the pinch to zoom features in Chromium, but... even after a reboot, the Qt photosurface example is only responding to single touches from the touchscreen, no pinch to zoom or rotate. Here's the current xinput feedback:
$ xinput
⎡ Virtual core pointer id=2 [master pointer (3)]
⎜ ↳ Virtual core XTEST pointer id=4 [slave pointer (2)]
⎜ ↳ Advanced Silicon S.A CoolTouch(TM) System id=8 [slave pointer (2)]
⎜ ↳ ImPS/2 Logitech Wheel Mouse id=10 [slave pointer (2)]
⎣ Virtual core keyboard id=3 [master keyboard (2)]
↳ Virtual core XTEST keyboard id=5 [slave keyboard (3)]
↳ Power Button id=6 [slave keyboard (3)]
↳ Power Button id=7 [slave keyboard (3)]
↳ AT Translated Set 2 keyboard id=9 [slave keyboard (3)]
↳ HP WMI hotkeys id=11 [slave keyboard (3)]
I'd really like to develop multi-touch enabled Qt apps for this system, but so far, they seem to be deaf to the multi-touch events.