Creating a anonymous Layer

csharp

Creating a anonymous LayerBy Virupaksha Aithal
To create anonymous Layer, you need to call “AcDbLayerTable::setIsHidden()” API as shown in below code. Anonymous layers are not shown in layer manager and hence users can not edit/delete the setting of anonymous layers.

void CreateAnonymousLayer()

{

    AcDbObjectId layerId = AcDbObjectId::kNull;

    AcDbLayerTable* lTable = NULL;

    AcDbDatabase *pDb = acdbHostApplicationServices()->

                                        workingDatabase();

    Acad::ErrorStatus es =

                pDb->getSymbolTable(lTable, AcDb::kForWrite);

    if(Acad::eOk == es && lTable)

    {

          AcDbLayerTableRecord* lTblRec =

                new AcDbLayerTableRecord();

          lTblRec->setName(ACRX_T("TEST"));

          lTblRec->setIsHidden(true);

          if (lTable->add(layerId, lTblRec) != Acad::eOk)

              ::acutPrintf(_T("ERROR Creating Layer\n"));

          else

            lTblRec->close();

          lTable->close();

    }

}

.NET

[CommandMethod("Hiddenlayer")]

public void Hiddenlayer()

{

Document doc = Application.DocumentManager.MdiActiveDocument;

Database db = doc.Database;

Editor ed = doc.Editor;

using (Transaction tr =

        db.TransactionManager.StartTransaction())

{

     LayerTable table =

     tr.GetObject(db.LayerTableId, OpenMode.ForWrite) as LayerTable;

     LayerTableRecord Anonymous = new LayerTableRecord();

     Anonymous.Name = "Test";

     Anonymous.IsHidden = true;

     table.Add(Anonymous);

     tr.AddNewlyCreatedDBObject(Anonymous, true);

     tr.Commit();

}

}