OK.

Is there somewhere a utorial in frech for axioms ?
And if I do it, how to use it ?

That link is outdated for the Axiom SDK.  The current revision can be found in the "Developers" folder that comes with Axe 0.5.1.  This will be a lot harder to write in Asm by the way than it would be in pure Axe and I wouldn't attempt something this complicated unless you have a good asm background.

I think your library is the fine the way it is though.  If you want to make it more memory efficient, you can split it into sub-libraries.  For instance, you can have "LIB7CORE" for the core routines, "LIB7BUT" for all routines pertaining to buttons, and "LIB7WIND" for window routines.  That way, you only need to include the ones you are going to use.

I saw Awioms SDK, I believe I must write code on a PC, no ?
So I'll give you Axe code of AXELIB7, cause I'll never have enough time on the same computer to do it.  :'(

This is the wrong topic to ask questions. You absolutely need to ask directly in a new topic in the Axe Parser help section, else most people will miss your question (since some people never check projects)