Code

this.HeadShapeSize = 20;
this.StrokeThickness = 5;  

Code

private class SLG : ISwimlaneGrid
{
      public SLG(MindFusion.Diagramming.Wpf.Lanes.Grid g)
      {
            this.g  = g;
      }

      private MindFusion.Diagramming.Wpf.Lanes.Grid g;

      public int GetColumnCount()
      {
            return g.ColumnHeaders[0].SubHeaders.Count;
      }

      public double GetColumnWidth(int index)
      {
            return g.ColumnHeaders[0].SubHeaders[index].Width;
      }

      public int GetRowCount()
      {
            return g.RowHeaders.Count;
      }

      public double GetRowHeight(int index)
      {
            return g.RowHeaders[index].Height;
      }

      public void SetColumnCount(int value)
      {
            g.ColumnHeaders[0].SubHeaders.Clear();
            for (int i = 0; i < value; i++)
                  g.ColumnHeaders[0].SubHeaders.Add(new MindFusion.Diagramming.Wpf.Lanes.Header());
      }

      public void SetColumnWidth(int index, double value)
      {
            g.ColumnHeaders[0].SubHeaders[index].Width = value;
      }

      public void SetLeftMargin(double value)
      {
            g.LeftMargin = value;
      }

      public void SetRowCount(int value)
      {
            g.RowCount = value;
      }

      public void SetRowHeight(int index, double value)
      {
            g.RowHeaders[index].Height = value;
      }

      public void SetTopMargin(double value)
      {
            g.TopMargin = value;
      }
}