Class StickyPainter
   Implements IRichTextPainter
   Private _stickies As List(Of StickyNote)
   Public Sub New(stickies As List(Of StickyNote))
       _stickies = stickies
   End Sub
   Public Sub Paint(context As C1PaintingContext)
       For Each sticky As var In _stickies
           Dim rect = context.ViewManager.GetRectFromPosition(sticky.Range.Start)
           context.Paint(Math.Round(rect.X), Math.Round(rect.Bottom), False, sticky)
       Next
   End Sub
   Public Sub PaintInline(context As C1PaintingContext, line As C1Line)
   End Sub
   Public Event PainterChanged As EventHandler(Of RichTextPainterChangeEventArgs)
End Class

class StickyPainter : IRichTextPainter
{
   List<StickyNote> _stickies;
   public StickyPainter(List<StickyNote> stickies)
   {
       _stickies = stickies;
   }
   public void Paint(C1PaintingContext context)
   {
       foreach (var sticky in _stickies)
       {
          var rect = context.ViewManager.GetRectFromPosition(sticky.Range.Start);
           context.Paint(Math.Round(rect.X), Math.Round(rect.Bottom), false, sticky);
       }
   }
   public void PaintInline(C1PaintingContext context, C1Line line)
   {
   }
   public event EventHandler<RichTextPainterChangeEventArgs> PainterChanged;
}