The FilterGroup object represents a filter group that defines a filter condition for features of the specified type as well as a mode and display styles of features falling into this group. A feature falls into the group if applying group condition for this feature results in gdbFilterResultTrue (the result constants are given in the "Results of Applying Filter Conditions" table). To create an object (group), use the FeatureType::CreateFilterGroup method. After setting the group, it must be added to the FeatureType::FilterGroups collection.
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