LispWorks User Guide and Reference Manual > 18 Dynamic Data Exchange > 18.3 Server interface > 18.3.3 Topics

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18.3.3.1 General topics

To use general topics, the LispWorks application must define one or more subclasses of dde-topic. If an application supports only a single type of document, it will typically require only one topic class. If several different types of document are supported, it may be convenient to define a different topic class for each type of document.

If the application uses general topics, it should define a method on the dde-server-topics generic function, specializing on the application's server class.


LispWorks User Guide and Reference Manual - 22 Dec 2009

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