Objects with run-time classes and methods of making them
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United States of America Patent
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Apr 20, 1999
Grant Date -
N/A
app pub date -
Jun 15, 1992
filing date -
Jun 15, 1992
priority date (Note) -
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status (Latency Note)
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Abstract
Techniques for defining object classes at run time which are indistinguishable from object classes compiled at compile time. The techniques are applied to widgets employed in X window systems. Further disclosed are new kinds of widgets. One of the new kinds is a widget which has monitor functions associated with specific resources. When the resource is accessed, the monitor function is executed. Another is a widget which has a callback tester function associated with a list of callback functions. The callback tester performs a test whenever any resource of the widget is modified, and if the test succeeds, the functions on the list of callback functions are invoked. Other kinds of widgets are adapted to representing servers and clients. In these widgets, resources represent interprocess communications and operations on the resources are related to the interprocess communication.
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