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<concept id="GUID-E530CBB9-C20D-5426-89AA-DC0281C05381" xml:lang="en"><title>Inter
Process Communication Overview</title><prolog><metadata><keywords/></metadata></prolog><conbody>
<section id="GUID-473DC9B6-A731-4F9B-9116-F174D9DDC6DB"><title>Purpose</title> <p>Provides idioms and frameworks by which
processes can pass requests and data to other running processes. </p> </section>
<section id="GUID-21600C43-FBB8-4D79-8FC6-8DB0D1396FFA"><title>Architectural relationships</title> <p>The APIs in this group
are fundamental to Symbian platform programming. This is particularly so of
the high-level classes in the Asynchronous Services API, which are provide
the underlying structure of most Symbian platform applications.</p> </section>
<section id="GUID-D6CD2FE0-B8AD-4806-8AA6-1FC7CA9B197B"><title>Description</title> <p>Functionality is provided by a number
of APIs. Use them as follows:</p> <p><xref href="GUID-1294F540-FDA7-5050-BAFB-3C9888491B98.dita">Asynchronous
Services Overview</xref> </p> <p>Provides the idioms by which one process
in Symbian platform can request services from another. </p> <p><xref href="GUID-D0D27AEA-FDDB-5F6F-94F6-ADDF5910DC47.dita">Client/Server
Overview</xref> </p> <p>Provides the Symbian platform client/server
framework, by which a program can offer services to multiple other programs.</p> <p><xref href="GUID-24508C2D-31B9-5CC2-9EB8-F00AD39D8AA0.dita">Notification Services Overview</xref> </p> <p>Provides
miscellaneous low-level services for notifying programs of environment changes
and of thread deaths, and for putting simple messages on screen.</p> </section>
<section id="GUID-01EC89FD-DD72-4C75-B76C-BB8174BE9DB2"><title>See also</title> <p><xref href="GUID-AFE6FB6B-E7FC-50A2-8374-B046AA709EB5.dita">Environment
Change Notifier Overview</xref> </p> <p><xref href="GUID-E189B0C0-AAB5-5472-996B-91043DE0B6D4.dita">Package
Buffers Overview</xref> </p> <p><xref href="GUID-BE0C94BE-94F0-54B3-8674-366C09261E5D.dita">Reference
Counting Objects Overview</xref> </p> <p><xref href="GUID-FF8F5D97-7D37-5F6B-84A3-C064E2FD53E0.dita">System
Static Functions Overview</xref> </p> <p><xref href="GUID-547CF71C-6A62-57C0-A9BE-E76B4286C6D6.dita">Threads
And Processes Overview</xref> </p> </section>
</conbody></concept>