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  1. Qt
  2. QTBUG-65580

Flicking when moving Fixed size controls in some setups

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    • Commits:
      5c0bd3961fa17d594e2a14d142b75c0002856595 (qtbase/5.10, 23.1.2018, 5.10.1)

      Description

      In some setups moving simple fixed size widgets/controls causes wild flicker. The attached example fails on my system:

      Display 1 on the right 24" 4K 3840 x 2160 (150%)
      Display 2 on the left 24" 1920 x 1080 (100%)
      Both display use their native resolutions and the recommended scaling. 
      The main display does not seem to be important, but it seems like right and left position is.
      It obviously has to do with screen change, but unlike QTBUG-62971 it does not have to do with the screen change events (but other events). Defaults will follow. It does not seem to affect Mac. The issue is worsened when there is a drag from the right screen to the left and a move is started on the rightmost part of the window title bar. (That likely causes the screen change event to occur later).

        Attachments

        1. detailed_example.zip
          70 kB
        2. example.cpp
          0.6 kB
        3. example.pro
          0.0 kB
        4. qtbug65580_diag.diff
          4 kB
        5. qtbug65580.zip
          2 kB

          Issue Links

          For Gerrit Dashboard: QTBUG-65580
          # Subject Branch Project Status CR V

            Activity

              People

              Assignee:
              qt.team.quick.subscriptions Qt Quick and Widgets Team
              Reporter:
              tmartsum Thorbjørn Lund Martsum
              Votes:
              3 Vote for this issue
              Watchers:
              10 Start watching this issue

                Dates

                Created:
                Updated: