WriteableBitmap 的使用



WriteableBitmap 初始化：

   bitmap = new WriteableBitmap(PicWidth, PicHeight, PicWidth, PicHeight,         PixelFormats.Bgr24, null);

                                                  

    imageTest.Source = bitmap;

写入缓存：

  bitmap.Lock();

  bitmap.WritePixels(new Int32Rect(0, 0, bitmap.PixelWidth, bitmap.PixelHeight), byBmp,                 bitmap.BackBufferStride, 0);

  bitmap.AddDirtyRect(new Int32Rect(0, 0, bitmap.PixelWidth, bitmap.PixelHeight ));

  bitmap.Unlock();