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  1. Qt
  2. QTBUG-116650

TableView Pooling Bugs / Cell Recycling

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    • All, Windows

    Description

      When adding or removing rows or columns from a QML TableView, there are many odd, seemingly random, effects with regard to volatile state data e.g. animation and mouse states. 

      Qt docs on TableViews offer what is paramount to a disclaimer about this.  So, clearly this a long known issue. 

      The recommended "solution" is to make use of onPooled and onReused slots, or to disable the caching mechanism entirely by setting `reuseItems` to false.  But, these solutions are not sufficient, and still force one into a great deal of work and the invention of various kludges.

      I have attached a simple project which demonstrates some of these problems, along with more extended descriptions and thoughts on the matter.

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          is duplicated by

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-116723 TableView + TableModel discards every delegate with every update

          • P2: Important - Urgent, should be fixed, but will not stop the release.
          • Closed
          is required for

          User Story - Created by Jira Software - do not edit or delete. Issue type for a user story. QTBUG-70326 TableView

          • P2: Important - Urgent, should be fixed, but will not stop the release.
          • In Progress
          relates to

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-116723 TableView + TableModel discards every delegate with every update

          • P2: Important - Urgent, should be fixed, but will not stop the release.
          • Closed
          resulted from

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-116723 TableView + TableModel discards every delegate with every update

          • P2: Important - Urgent, should be fixed, but will not stop the release.
          • Closed
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              richard Richard Moe Gustavsen
              tboyle Tim Boyle
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                Updated:

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