Question on using header or static library?

In my program i originally intended to maker a wrapper using a class within a static library.

But I had a brain wave and i thought why not just stick the code into a header instead of making a static library aswell as a header.

Well my header works nicely.

But my question is, is there any disadvantages of this? As I havent seen this done anywhere.

Yeah, there are. Add another .cpp file to your project and include the header there as well. Unless every single method of your class is inline or it is a template class, you'll get linker errors.

About not seen elsewhere, download boost (www.boost.org), most of their classes only have header files.