[2005] Label VS Button

They both have same members, they both have same properties. So what's the difference between them not include the visual look ?

Right now, I'm creating a component like my attach image. It's currently inherits label.
I want to expand its ability with mouse enter and leave for nice effect, and want to change my standard button with my component.

Can you suggest wether I create a new component that inherits button, or just use this component with click events ?

Regards

Michael