Data.DBXCommon.TDBXStreamReaderStream

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Data.DBXCommon.TDBXStreamSystem.Classes.TStreamSystem.TObjectTDBXStreamReaderStream

Delphi

TDBXStreamReaderStream = class(TDBXStream)

C++

class PASCALIMPLEMENTATION TDBXStreamReaderStream : public TDBXStream

Properties

Type Visibility Source Unit Parent
class public
Data.DBXCommon.pas
Data.DBXCommon.hpp
Data.DBXCommon Data.DBXCommon

Description


TStream is the base class type for stream objects that can read from or write to various kinds of storage media, such as disk files, dynamic memory, and so on.

Data.DBXCommon.TDBXStreamReaderStream inherits from System.Classes.TStream. All content below this line refers to System.Classes.TStream.

TStream is the base class type for stream objects that can read from or write to various kinds of storage media, such as disk files, dynamic memory, and so on.

Use specialized stream objects to read from, write to, or copy information stored in a particular medium. Each descendant of TStream implements methods for transferring information to and from a particular storage medium, such as a disk file, dynamic memory, and so on. In addition to methods for reading, writing, and copying bytes to and from the stream, stream objects permit applications to seek to an arbitrary position in the stream. Properties of TStream provide information about the stream, such as its size and the current position in the stream.

TStream also introduces methods that work in conjunction with components and filers for loading and saving components in simple and inherited forms. These methods are called automatically by global routines that initiate component streaming. They can also be called directly to initiate the streaming process. Note, however, that component streaming always involves two additional objects:

  • A component object that is passed as a parameter to the stream's methods.
  • A filer object that is automatically created by the stream, and associated with the stream.

Descendant stream objects, such as memory and file streams used for component streaming, are created automatically by the global functions ReadComponentRes and WriteComponentRes. For streaming other kinds of information, choose a descendent class according to the specific data and storage needs. These include:

See Also

Code Examples