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

TVariantField

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

Field class for native variant data

Declaration

Source position: db.pas line 986

type TVariantField = class(TField)

public

  constructor Create(); override;

  

Create a new instance of the TVariantField class

end;

Inheritance

TVariantField

  

Field class for native variant data

|

TField

  

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

|

TComponent,IUnknown,IInterfaceComponentReference

|

TPersistent,IFPObserved

|

TObject

Description

TVariantField is the class used when a dataset must manage native variant-typed data. (TField.DataType equals ftVariant). It initializes some of the properties of the TField class and overrides some of its methods to be able to work with variant data.

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

See also

TDataset

  

Base class for records-based data-access

TField

  

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


Documentation generated on: Jun 22 2020