API Reference > OdDg Classes > OdDgRelatedItemsDisplaySpecificationClassInstance Class > OdDgRelatedItemsDisplaySpecificationClassInstance Methods > OdDgRelatedItemsDisplaySpecificationClassInstance::getDerivedClassesItemCount Method
OdDgRelatedItemsDisplaySpecificationClassInstance::getDerivedClassesItemCount Method
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Syntax
C++
virtual OdUInt32 getDerivedClassesItemCount() const = 0;
Group
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