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ODA Drawings SDK
API Reference > OdDb Classes > OdDbObjectId Class > OdDbObjectId Constructor > OdDbObjectId::OdDbObjectId Constructor ()
OdDbObjectId::OdDbObjectId Constructor ()
Syntax
C++
OdDbObjectId(); OdDbObjectId(const OdDbObjectId& objectId) = default;

This function guarantees that isNull() will return true if it is the first operation applied to this instance.

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