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Sorting a model has no immediate effect

I implemented sort in a QAbstractTableModel subclass. The sorting itself works but the view doesn't change until I hover over the table itself (i.e. not the header). How can I fix this? At first I thought that I also have to emit a signal but couldn't find an appropriate one.

Solution

  • I use the following code to sort my model in a project:

    void MyModel::organize()
{
    if (!cache_ || cache_->empty()) return;
    beginResetModel(); // (a)
    std::stable_sort(cache_->begin(), cache_->end(), compareRow);
    endResetModel(); // (b)
} // end:(MyModel::organize)

    line (a) tells the model that I'm going to re-organize data, line (b) tells the model that I'm finished, please refresh the associated views.

    You may also emit dataChanged(index, index); signal.