创建简单的块表记录

以下示例演示如何创建新的块表记录并将其追加到块表中。然后，它会创建一行并将其附加到新的块表记录中。

void
makeABlock()
{
     // Create and name a new block table record.
     //
     AcDbBlockTableRecord *pBlockTableRec
         = new AcDbBlockTableRecord();
     pBlockTableRec->setName("ASDK-NO-ATTR");
     // Get the block table.
     //
     AcDbBlockTable *pBlockTable = NULL;
     acdbHostApplicationServices()->workingDatabase()
        ->getSymbolTable(pBlockTable, AcDb::kForWrite);
     // Add the new block table record to the block table.
     //
     AcDbObjectId blockTableRecordId;
     pBlockTable->add(blockTableRecordId, pBlockTableRec);
     pBlockTable->close();
     // Create and add a line entity to the component's
     // block record.
     //
     AcDbLine *pLine = new AcDbLine();
     AcDbObjectId lineId;
     pLine->setStartPoint(AcGePoint3d(3, 3, 0));
     pLine->setEndPoint(AcGePoint3d(6, 6, 0));
     pLine->setColorIndex(3);
     pBlockTableRec->appendAcDbEntity(lineId, pLine);
     pLine->close();
     pBlockTableRec->close();
}