[Overview][Constants][Types][Classes][Procedures and functions][Variables][Index] Reference for unit 'DB' (#fcl)

TAutoIncField

[Properties (by Name)] [Methods (by Name)] [Events (by Name)]

Field for auto-incremental, 32-bit signed integer data

Declaration

Source position: db.pas line 652

type TAutoIncField = class(TLongintField)

public

  constructor Create(); override;

  

Create a new instance of the TAutoIncField class.

end;

Inheritance

TAutoIncField

  

Field for auto-incremental, 32-bit signed integer data

|

TLongintField

  

Field class for 32-bit signed integer data

|

TNumericField

  

Base class for all numerical data field classes

|

TField

  

Provide access to the contents of a single field in a record

|

TComponent,IUnknown,IInterfaceComponentReference

|

TPersistent,IFPObserved

|

TObject

Description

TAutoIncField is the class created when a dataset must manage 32-bit signed integer data, of datatype ftAutoInc: This field gets it's data automatically by the database engine. It exposes no new properties, but simply overrides some methods to manage 32-bit signed integer data.

It should never be necessary to create an instance of TAutoIncField manually, a field of this class will be instantiated automatically for each auto-incremental field when a dataset is opened.

See also

TField

  

Provide access to the contents of a single field in a record


Documentation generated on: Jun 22 2020