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  1. Qt
  2. QTBUG-68977

QListView with millions of items slow with keyboard scrolling

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    Details

    • Type: Bug
    • Status: Closed
    • Priority: P2: Important
    • Resolution: Done
    • Affects Version/s: 5.6, 5.11.1
    • Fix Version/s: 5.13.0 Alpha 1
    • Component/s: Widgets: Itemviews
    • Labels:
      None
    • Commits:
      43ed09fed59d55a8792fad87ef9a75382b5c60ff

      Description

      When a view has millions of elements, scrolling with the scrollbar is fast, however, scrolling by using up/down arrow is slow.

      This stackoverflow post is a very good summary of the bug: https://stackoverflow.com/questions/32449642/qlistview-with-millions-of-items-slow-with-keyboard

      This stackoverflow answer analyses the problem: https://stackoverflow.com/a/50904999/3336423

      The slow behavior was introduced by the fix of QTBUG-21804

        Attachments

        1. QTBUG-68977.zip
          4 kB
        2. main.cpp
          2 kB
        For Gerrit Dashboard: QTBUG-68977
        # Subject Branch Project Status CR V

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            People

            Assignee:
            chehrlic Christian Ehrlicher
            Reporter:
            jpo38 Jean Porcherot
            Votes:
            1 Vote for this issue
            Watchers:
            3 Start watching this issue

              Dates

              Created:
              Updated:
              Resolved:

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