How to derive new class from TField ?

Michael Grahl

Delphi Developer

Wed, 18 Jun 1902 08:00:00 GMT

How to derive new class from TField ?

The Sybase SQL-Anywhere DBMS does not support the boolean-type. It is
implemented as a integer-subtype BIT. The BDE does not recognize this
type as Boolean. So the field-editor in Delphi creates a TSmallIntField.
My idea is, to derive a new TMyBoolean-class from TSmallIntField and to
override the Get- and SetBoolean-methods.
But: How can I access this type in the field-editor, or in the
"datamodule-as-text-editor" ?
Do someone have a better idea to get a type-conform component in Delphi
?

michael

Other Threads

1. How to derive a new class from TField

2. Deriving new class from Proxy class

3. Deriving Existing controls to a new base class.

4. New Class derived from TImage

5. Derive a COM class from another COM class

6. Q: accessing published properties of a derived class using a base class pointer

7. can't derive vcl-classes from two base-classes

8. accessing common class members in classes derived from different vcl controls

9. Return a list of Derived Classes

10. Return a list of Derived Classes