How to change the cell text color in a QTableView?

[vrltwe]

I've tried this (without success):

ui->tableView->model()->setData(ui->tableView->model()->index(5, 5, QModelIndex()), QVariant(QColor(Qt::red)), Qt::DecorationRole);

ui->tableView->model()->setData(ui->tableView->model()->index(5, 5, QModelIndex()), QVariant(QColor(Qt::red)), Qt::DecorationRole);

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Thanks in advance.

[ChrisW67]

Qt::ForegroundRole
Setting it with setData() is only useful if the model has somewhere to store the value. A QStandardItemModel does, for example, but a base QSqlTableModel does not.

[vrltwe]

Hi ChrisW67,

Thank you for your answer.

But I still have no idea how to proceed in order to set the color of some cells. Could you please provide further information.

Thanks in advance.

[ChrisW67]

You are using a QTableView. Colours in that view are driven by the data in the model (or alternate behaviour implemented in a QStyledItemDelegate). You need to arrange for the underlying model to return the desired text colour when queried for the Qt::ForegroundRole. Without more information in the model you are actually using there not much more we can say.

[vrltwe]

A QSqlTableModel is beeing used.

[ChrisW67]

QSqlTableModel does not return a value for Qt::ForegroundRole.

You need to create a sub-class of QSqlTableModel with an extended data() function that returns something for Qt::ForegroundRole.
Alternatively, place a QIdentityProxyModel subclass between the QSqlTableModel and the view and put the extended data() function in the proxy.
Alternatively, write a QStyledItemDelegate sub-class that paints the cells differently (hardest to get right).

Which option you choose depends on how many views are watching the model, whether the colour difference is unique to one view, etc.