title: Bitmap.Lockbits confusion
body: <p>MSDN reference: [1] <a href="http://msdn.microsoft.com/en-us/library/5ey6h79d.aspx#Y1178" rel="noreferrer">http://msdn.microsoft.com/en-us/library/5ey6h79d.aspx#Y1178</a></p>
  
  <p>From the link it says that the first argument will "specifies the portion of the Bitmap to lock" which I set to be a smaller part of the Bitmap (Bitmap is 500x500, my rectangle is (0,0,50,50)) however the returned BitmapData has stride of 1500 (=500*3) so basically every scan will still scan through the whole picture horizontally. However, what I want is only the top left 50x50 part of the bitmap.</p>
  
  <p>How does this work out?</p>