API:Vcl.Graphics.TPicture
Delphi
TPicture = class(TInterfacedPersistent, IStreamPersist)
C++
class PASCALIMPLEMENTATION TPicture : public System::Classes::TInterfacedPersistent
Properties
| Type | Visibility | Source | Unit | Parent |
|---|---|---|---|---|
| class | public | Vcl.Graphics.pas Vcl.Graphics.hpp |
Vcl.Graphics | Vcl.Graphics |
Description
TInterfacedPersistent is an ancestor for persistent objects that implement interfaces.
Vcl.Graphics.TPicture inherits from System.Classes.TInterfacedPersistent. All content below this line refers to System.Classes.TInterfacedPersistent.
TInterfacedPersistent is an ancestor for persistent objects that implement interfaces.
TInterfacedPersistent, like all persistent objects, supports the ability to read and write its properties to and from a stream. In addition, it supplies a default implementation of the IInterface methods (_AddRef, _Release, and QueryInterface). This default implementation simply passes these calls on to the interface of the persistent object's Owner, if any.
Do not create instances of TInterfacedPersistent. Use TInterfacedPersistent as a base class when declaring objects that are not components, but that need to be saved to a stream or have their properties assigned to other objects, and that support interfaces.