Article # 148, added by Geoworks, historical record
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When to use ObjDerefGen/ObjDerefVis
pself is automatically set to point to an object's instance data at the start of a method handler (except as noted below). There are conditions when you will need to re-dereference pself in the method handler. These conditions are: + You need to redereference after calling any message and after @callsuper. + If the class is a master or variant (has either keyword in the class definition), then you need to dereference pself at the beginning of the method. (If your class is a subclass of a standard Geos class, then you do not need to dereference at the beginning.)