通过acdbblockreference 获得块名

 

AcDbBlockReference *pBlkRef = AcDbBlockReference::cast(ent.object());      AcDbObjectId pBlkTblRecId;      pBlkTblRecId = pBlkRef->blockTableRecord();      AcDbBlockTableRecord *pBlkTblRec;      es = acdbOpenObject(pBlkTblRec, pBlkTblRecId, AcDb::kForRead);