API Reference > OdDg Classes > OdDgElementId Class > OdDgElementId Constructor > OdDgElementId::OdDgElementId Constructor ()
OdDgElementId::OdDgElementId Constructor ()
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Syntax
C++
OdDgElementId(); OdDgElementId(OdDbStub* objectId);
Remarks

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

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