Class: TEgFireGridColumn
property MaxSize: Integer;The most characters the column’s text and memo editors accept; 0 means no limit.
Until it is assigned, it is the field’s size (the length of a string
field; 0 for the other types), read from the dataset each time.
Assigning it gives the column its own value (cvMaxSize in
AssignedValues);
RestoreDefaults
goes back to the field’s.