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  1. Qt
  2. QTBUG-46694

[REG 4.8.5->5.4.2] After releasing stylus button widget stops receiving TabletMove events

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    • 17c236ad05353b91b7c738b877560e3215573972 (qtbase/5.5, 28.7.2015, 5.5.1)

      This issue can be reproduced on the qtbase\examples\widgets\widgets\tablet example code. Simple steps:

      1. Start drawing with stylus
      2. While drawing click button on stylus
      3. After releasing the button app stops drawing
      EXPECTED: App keeps drawing

      The reason of this behavior is that QTabletEvent is not reported to the widget anymore. Qt starts reporting it back when button is down and stops after releasing. So it looks to me that TabletMove event behaves just like MouseMove event without mouse tracking.

      This works as expected with qt 4.8.5 on the same example.

      I tried this on both Windows and Mac with Wacom Intuos pro tablet.

        1. qtbug46694_diag.diff
          2 kB
          Jakub Kotur
        2. qtbug46694_diag.diff
          2 kB
          Friedemann Kleint
        3. qtbug46694_win_intuos_focus_log.txt
          63 kB
          Jakub Kotur
        4. qtbug46694_win_intuos_log.txt
          30 kB
          Jakub Kotur
        5. qtbug46694_win_log.txt
          189 kB
          Friedemann Kleint
        For Gerrit Dashboard: QTBUG-46694
        # Subject Branch Project Status CR V
        120840,3 Clear qt_tablet_target only when all buttons are released. 5.5 qt/qtbase Status: MERGED -2 0
        122271,9 Tablet example: smoother, rotation stylus, better airbrush dev qt/qtbase Status: MERGED +2 0

            srutledg Shawn Rutledge
            qba Jakub Kotur
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              Created:
              Updated:
              Resolved:

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