I think that's a great idea!
But it's not 'Powered by'. 'Powered by' implies an active involvement in the functioning of the product with the 'powered by' tag. It applies to websites (like powered by drupal, powered by wordpress etc), where the advertised component (C::B in our case) plays an active role (as a back end usually, in web development).
You can't really say 'powered by' when referring to Code::Blocks.
I would think more like: 'made using', 'created using', 'developed using', or some other more appropriate tags. I lack inspiration right now.