Adding buttons to NPC frames?
 

I was wondering how can I add a button to a merchant frame, for example, and make it do something when pressed...


I'm using ACE2 Libs on my future mod, so I dont really know if this should be posted here or in the ACE forum.

hrm ...
I would set the Parent of this Button to the MerchantFrame, then you can position it with relative to x,y. When the MerchantFrame is invisible, the Button too.

Its a good idea, but I'm still starting with scripts and mods for WoW, can you explain it a little more script based? (with an example or a reference)