public IImageContainer AddImageContainer(string filename, int x, int y)
 {
     ImageContainer bitmapContainer = new ImageContainer(this);
     bitmapContainer.Load(filename);
     bitmapContainer.Left = x;
     bitmapContainer.Top = y;
     AddElement(bitmapContainer);
     return bitmapContainer;
 }
 public IImageContainer AddImageContainer(Image image, int x, int y)
 {
     ImageContainer bitmapContainer = new ImageContainer(this);
     bitmapContainer.Image = image;
     bitmapContainer.Left = x;
     bitmapContainer.Top = y;
     AddElement(bitmapContainer);
     return bitmapContainer;
 }