Silverlight 3 Beta 新特性解析（2）-Graphics篇

   1: public sealed class WriteableBitmap : BitmapSource

   2: {

   3:     public WriteableBitmap(BitmapSource source);

   4:     public WriteableBitmap(int pixelWidth, int pixelHeight, PixelFormat format);

   5:     public int this[int index] { get; set; }

   6:     public void Invalidate();

   7:     public void Lock();

   8:     public void Render(UIElement element, Transform transform);

   9:     public void Unlock();

  10: }