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  1. Qt
  2. QTBUG-128502

HorizontalHeaderView does not call headerData() when subclassing QAbstractItemModel

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Details

    • Bug
    • Resolution: Fixed
    • Not Evaluated
    • None
    • 6.7.2
    • Quick: Controls 2
    • None
    • Win11 MSVC
    • Windows

    Description

      When directly subclassing QAbstractItemModel, HorizontalHeaderView does not call headerData(). However, by subclassing QAbstractTableModel, it can fetch data correctly.

      I quote from the documentation: "If you assign a model that is a QAbstractItemModel, its header data will be used. Otherwise, the data in the model will be used directly (for instance, if you assign a model that's simply an array of strings)."

      Here is the result when subclassing from QAbstractItemModel:

      And the results when inheriting from QAbstractTableModel:

      Please download the attachment and replicate the problem.

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              richard Richard Moe Gustavsen
              warindy yi wang
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                Created:
                Updated:
                Resolved:

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