Tree selection clears when data model refresh

Question

I have a treeview in which I have applied sorting/filtering using QSortFilterProxyModel.

When I perform some action on tree item(ex. RMB action), I refresh my data model(QAbstractItemModel).

I am using beginresetmodel() before refreshing my data model. After data model's refreshed, selection on selected item disappears. I have saved the selections before refreshing data model, and applied them back after the model is refreshed, but the items do not get selected.

I tried removing beginResetModel() before refreshing data model, and selection works fine in that case.

QSortFilterProxyModel documentation says:

However, beginResetModel() / endResetModel() returns the proxy model to its original state, losing selection information, and will cause the proxy model to be repopulated."

How can I retain selection while keeping beginResetModel() / endResetModel() when refreshing data model?

Details can be found in this thread on Qt Forum: tree selection clears when data model refresh — CPPUIX
– CPPUIX, Commented May 22, 2023 at 7:13

Antriksh kakkar · Accepted Answer · 2023-05-22 06:42:34Z

-1

I am able to fix this by refreshing the seleced rows instead of reloading complete data model.

answered May 22, 2023 at 6:42

Antriksh kakkar

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