XtGetClassExtension - locate a class extension record


   XtPointer XtGetClassExtension(WidgetClass object_class, Cardinal
          byte_offset, XrmQuark type, long version, Cardinal record_size);


             Specifies the widget class containing the extension list to
             be searched.

             Specifies the offset in bytes form the base of the widget
             class of the extension field to be searched.

   type      Specifies the name of the class extension to be located.

   version   Specifies the minimum acceptable version of the class
             extension required for a match.

             Specifies the minimum acceptable length of the class
             extension record required for match, or 0.


   The list of extension records at the specified offset in the specified
   widget_class will be searched for a match on the specified type, a
   version greater than or equal to the specified version, and a record
   size greater than or equal the specified record_size if it is nonzero.
   XtGetClassExtension returns a pointer to a matching extension record or
   NULL if no match is found. The returned extension record is owned by
   the widget class and must not be modified or freed by the caller,
   except possibly to be modified by the widget class owner.


   X Toolkit Intrinsics - C Language Interface
   Xlib - C Language X Interface


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