ISequentialStream

This 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.

Methods in Vtable Order

IUnknown Methods Description
QueryInterface Returns pointers to supported interfaces.
AddRef Increments the reference count.
Release Decrements the reference count.
ISequentialStream Methods Description
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

Runs On Versions Defined in Include Link to
Windows CE OS 3.0 and later Objidl.h    

Note   This API is part of the complete Windows CE OS package as provided by Microsoft. The functionality of a particular platform is determined by the original equipment manufacturer (OEM) and some devices may not support this API.

See Also

IStream

 Last updated on Tuesday, July 13, 2004

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