CreateHatch

admin1

AcDbObjectId CreateHatch(
                AcDbObjectId dbOId,
                char cLayer[],
                char cPattern[] = "SOLID",
                int nColor = 256,
                double dAngle = 0.0,
                double dScale = 1.0,
                AcDbDatabase * pDbDatab = acdbHostApplicationServices()->workingDatabase())
{
AcCmColor CmC;
AcDbObjectId DbOId;
AcDbObjectIdArray DbOIdA(0, 2);
AcDbBlockTable * pDbBT;
AcDbBlockTableRecord * pDbBTR;
AcGeVector3d normal(0.0, 0.0, 1.0);

DbOIdA.append(dbOId);

AcDbHatch* pDbHat = new AcDbHatch();

pDbHat->setDatabaseDefaults();

pDbHat->setAssociative(Adesk::kTrue); // BUG: doesn't do squat! have to set the reactor yourself to get associativity!

pDbHat->appendLoop(AcDbHatch::kExternal, DbOIdA);

pDbHat->setPatternScale(dScale);

pDbHat->setPatternAngle(dAngle);

pDbHat->setPattern(AcDbHatch::kPreDefined, cPattern);

pDbHat->setNormal(normal);

pDbHat->evaluateHatch(); // crucial call or nothing gets displayed!

pDbDatab->getSymbolTable(pDbBT, AcDb::kForRead);

pDbBT->getAt(ACDB_MODEL_SPACE, pDbBTR, AcDb::kForWrite);

pDbBTR->appendAcDbEntity(DbOId, pDbHat);

pDbHat->setLayer(cLayer);

CmC.setColorIndex(nColor);

((AcDbEntity *)pDbHat)->setColor(CmC);

pDbBT->close();

pDbBTR->close();

pDbHat->close();

return DbOId;

}