How can I access to different column in displayText function in QStyledItemDelegate

Question

I am going to change the display text for one of my QTableView column. I inherit from QStyledItemDelegate class and change the definition of displayText according to the following:

QString CellIdDelegate::displayText(const QVariant &value, const QLocale &locale) const
{
    QString currentColumn = value.toString();
    QString anotherColumn = ....;

    return currentColumn + anotherColumn;
}

and then use setItemDelegateForColumn .

How I can access to the value of another column in my QTableView .

Answer 1

You can't since displayText() is for exactly one cell. It's only meant to add eg a prefix or suffix. If you want to display other text, modify the data returned by Qt::DisplayRole accordingly. This is nothing for a delegate.