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  1. Qt
  2. QTBUG-132670

QTreeView does not always refresh on dataChanged

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    • 9d4b5fa01 (dev), c74f0ccf1 (6.9), a156bdc9a (6.8)

    Description

      This is a regression against 6.7.

      With 6.8, emitting dataChanged on indexes does not cause the view to refresh.

      I have attached a small program to test this.

      The steps to reproduce are:

      • run the example
      • scroll a bit down
      • click the button (most of the time it works there)
      • scroll again a bit down
      • click the button

      The data is not refreshed unless you change the current row or scroll again.

       

      I just did a bisect and it is caused by 

      2f9c72028d2481f587f378a256654d0a362e3d44 (QTreeView: optimize Private::intersectedRect())

      authored by chehrlic 

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          resulted from

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-124173 QTreeView / QTableView dataChanged very slow when topLeft and bottomRight span many items

          • P2: Important - Urgent, should be fixed, but will not stop the release.
          • Closed
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              chehrlic Christian Ehrlicher
              thierryb Thierry Bastian
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              Dates

                Created:
                Updated:
                Resolved:

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