QTableView problem - selecting multiple items

I have set up a QAbstractItemModel for a QTableView.
Also implemented a selectionChanged signal for selecting multiple rows in QTableView.

However, when I select more than one items in the QTableView, I found only the last item has been identified by the QModelIndexList (selected.indexes()).

Anyone has any advice.
I am grateful for your comment and suggestions.

What did you do in selectionChanged slot ? Its a virtual slot, and what changes have you done to it ?

Also have you tried setting the selection mode to multi selection ?

Do you mean selectionChanged signal? I made a customised slot to be invoked by the selectionChanged signal.

Yes, I have set the selection mode of the QTableView as QAbstractItemView::ExtendedSelection.

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Added after 6 minutes:

For the connection:

Code:

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connect(entityTableView->selectionModel(),SIGNAL(selectionChanged(const QItemSelection &, const QItemSelection &)), this,
		SLOT(selectionChangedSlot(const QItemSelection &, const QItemSelection &)));

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For the slot:

Code:

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void Scope::selectionChangedSlot(const QItemSelection &selected, const QItemSelection &deselected)
{
      int selectedItems = 0;
      QModelIndexList items = selected.indexes();
      selectedItems = selected.indexes().size();
...
}

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Everytime, the selectedItems is equal to 1 not the number that I have selected.