A function which calculates display values from raw values in the model.
It must fill value with the display value for the column column in the
row indicated by iter.
Since this function is called for each data access, it’s not a
particularly efficient operation.
A function which calculates display values from raw values in the model. It must fill
valuewith the display value for the columncolumnin the row indicated byiter.Since this function is called for each data access, it’s not a particularly efficient operation.