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  1. Qt
  2. QTBUG-54412

QComboBox loses selected item when several proxies are chained

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Details

    • Bug
    • Resolution: Duplicate
    • P2: Important
    • 5.8
    • 5.6.1
    • Widgets: Itemviews
    • None
    • baad82d242a4d8c1af6c87faaa7f25584183fd53

    Description

      Please see the attached archive for the example project.

      When several proxy models are chained and there's QIdentityProxyModel in the middle of the chain, QComboBox loses selected item when the sorting order changes.

      This actually seems to be `QIdentityProxyModel's` bug, since chained `QSortFilterProxyModel` instances work pretty well. I managed to fix this by patching `qidentityproxymodel.cpp` as suggested in https://bugreports.qt.io/browse/QTBUG-44143, which seems to be related issue.

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          duplicates

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-32981 QIdentityProxyModel not working when chained with a QSortFilterProxyModel

          • P1: Critical - Urgent and Important, will STOP the release if matched with set FixVersion field. This includes regressions from the last version that are not edge cases; Data loss; Build issues; All but the most unlikely crashes/lockups/hanging; Serious usability issues and embarrassing bugs & Bugs critical to a deliverable. This is the highest possible priority for requirements.
          • Closed

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            People

              chehrlic Christian Ehrlicher
              tonygluk Anton Karandeev
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              Dates

                Created:
                Updated:
                Resolved: