One cannot distinguish from what device the tablet proximity event has come. It is possible to do only after the first TabletMove event has come with all the id fields has come.
Wacom devices has three separate XInput devices: Stylus, Eraser and Touch. All three generate (touch doesn't generate due to a bug in Qt) proximity events, but one cannot recognize which device caused it.
|For Gerrit Dashboard: QTBUG-39573|
|87521,13||xcb: QTabletEvents and proximity events correctly identify the tool||5.3||qt/qtbase||Status: MERGED||+2||0|
|88007,4||xcb: QTabletEvents and proximity events correctly identify the tool||dev||qt/qtbase||Status: ABANDONED||-2||0|