Re: Extending System.Drawing.Rectangle...

> I don't believe delegating would cause any additional cost. Any calls
> to the inner Rectangle instance could be inlined by the JIT compiler
> (because Rectangle is a value type and thus sealed).

+1, especially by the time it gets to the native code

> However, I agree that it is cumbersome that you can't simply attach
> new operations to existing structures (or classes, actually) - that's
> why I like extension methods in C# 3.0, they seem to be a clean way to
> do this. (As long as you con't need to add state.) But that's only a
> solution for the future, not for now.
> 
> Fabian

Do extension methods work on structs?
I suggested it as well, but was unsure about their use on structs