Declaring the Class Field
Go Up to Adding the Data Link
A component needs a field for each of its owned classes, as explained in Declaring the Class Fields. In this case, the calendar needs a field of type TFieldDataLink for its data link.
Declare a field for the data link in the calendar:
type
TDBCalendar = class(TSampleCalendar)
private
FDataLink: TFieldDataLink;
.
.
.
end;
class PACKAGE TDBCalendar : public TSampleCalendar
{
private:
TFieldDataLink *FDataLink;
.
.
.
};
#include <DB.hpp>
#include <DBTables.hpp>
Before you can compile the application, you need to add DB and DBCtrls to the unit's uses clause.