How to inform a Model/TableView that some data changed?

[saa7_go]

Can't I just inform the view to update exactly the cell I know has changed?
I tried with the signal QAbstractItemModel::dataChanged, but I can't emit it from a QAbstractTableModel subclass, although it should inherit QAbstractItemModel's members, so what, aren't signals inherited?

You should emit QAbstractItemModel::dataChanged() signal inside QAbstractItemModel::setData() function.

So, how do you implement QAbstractItemModel::setData() function in your custom model?

For more informations about model subclassing, you can look at Model Subclassing Reference.