I like the library, it works fine in my Silverlight sample project.
I need to accomplish the following task.
User should be able to draw a rectangle with mouse over the portion of the image on Silverlight page (I guess rectangle can not be larger than initial image).
Then she clicks the button and image gets cropped so only portion in rectangle are left.
Than in code behind writeablebitmap object from the cropped are can be manipulated farther.
I would appreciate if you could post some sample code of how it can be accomplished.