QList<IdentifyResult> idResult = identify( x, y, TopDownAll );
    QList<IdentifyResult>::const_iterator it = idResult.begin();
    for ( ; it != idResult.end(); it++ )
    {
      QgsMapLayer *layer = *it.mLayer;
      if ( mLayerIdResults.contains( layer ) )
      {
        mLayerIdResults[layer].append( idResult );
      }
      else
      {
        mLayerIdResults.insert( layer, idResult );
      }
      mLayerIdResults.insert( it.mLayer );
    }