void OnSavetoprojectbuttonClicked(object sender, System.EventArgs e)
{
drawing.RegionOfInterest = blackboard.RegionOfInterest;
if (!play.Drawings.Contains(drawing))
{
play.Drawings.Add(drawing);
}
drawing.Miniature = blackboard.Save();
drawing.Miniature.ScaleInplace(Constants.MAX_THUMBNAIL_SIZE,
Constants.MAX_THUMBNAIL_SIZE);
play.UpdateMiniature();
drawing = null;
Respond(ResponseType.Accept);
}