How to create a raised effect button?

[screwtape]

I've been trying to build a button graphic in CoreGraphics with a rounded rectangle which appears raised (i.e. with highlights on one corner, and shadow on the opposite corner).

Is there an easy way of doing this? I can see methods for doing gradient fill, but not for doing a gradient line drawing.

I guess I could gradient fill a marginally larger shape, and then cover it with a smaller one, but that sounds unnecessarily complex and likely to have a performance penalty.

One of the reasons I don't want to just use images is that I am going to want different colours in different places so that would involve lots of images.

Any help or suggestions would be great. Thanks!

[bplymale]

Have you looked at this ?

UIGlassButton maker. Very simple app for creating Glass Buttons for iPhone applications | tapadoo

Probable modify to your specifications.

B

[screwtape]

Thanks for this! It's not quite what I'm looking for as I want to be able to have the colours set programatically, but it'll be good for apps where I'm not trying to do that.