public RenderCanvas(List <GMapMarker> ShowM, List <GMapMarker> ShowExpand, GmapGpsOverlay O)
 {
     ShowMarkers       = ShowM;
     ShowMarkersExpand = ShowExpand;
     EmptyTileBorders.Freeze();
     Owner = O;
 }
 public RenderCanvas(List <GMapMarker> ShowM, GmapSmartOverlay O)
 {
     Owner       = O;
     ShowMarkers = ShowM;
     EmptyTileBorders.Freeze();
 }