Function to put Spells on Actionbar?

[chumii]

Hi,

I am trying some simple things to learn addon development, and came across with sth i would like to achieve. It doesn't really make sense to do it, but i was wondering if it is possible, cause i couldn't find sth about it on wowprogramming.

So, I would like to create an addon, that has a button, and if you click it, it will put specific spells in an actionbar slot. maybe another button to remove all spells from all bars first..

is there some API function I didnt see, or some other ways to achieve that? Please, I dont want any complete code, I just need a hint if its possible, and if yes, push me into the right direction.. i want to learn, not copy / paste

thanks in advance
chumii