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ISequentialStream interface

The ISequentialStream interface supports simplified sequential access to stream objects. The IStream interface inherits its Read and Write methods from ISequentialStream.

When to implement

You can implement ISequentialStream on an object if you require simple sequential access to a stream object. If you implement IStream, you must provide an implementation of the Read and Write methods from ISequentialStream.

Note  Most applications do not implement ISequentialStream as a separate interface, and you are not required to provide it separately even if you provide an IStream implementation. For example, the compound file implementation of structured storage does not succeed on a QueryInterface method for ISequentialStream but it includes the Read and Write methods through the IStream interface pointer.

When to use

Call the methods of the ISequentialStream interface from a container or application to perform sequential read and write operations on data. Most applications call the Read and Write methods through the IStream interface.

Members

The ISequentialStream interface inherits from the IUnknown interface. ISequentialStream also has these types of members:

Methods

The ISequentialStream interface has these methods.

MethodDescription
Read

Reads a specified number of bytes from the stream object into memory starting at the current seek pointer.

Write

Writes a specified number of bytes to the stream object starting at the current seek pointer.

 

Requirements

Minimum supported client

Windows 2000 Professional [desktop apps | Windows Store apps]

Minimum supported server

Windows 2000 Server [desktop apps | Windows Store apps]

Header

Objidl.h

IDL

Objidl.idl

Library

Uuid.lib

DLL

Ole32.dll

IID

IID_ISequentialStream is defined as 0C733A30-2A1C-11CE-ADE5-00AA0044773D

See also

IStream

 

 

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