graphics!!

[ferri_marllo gva es]

 Hello!!
 I need help about creating graphics...i want to represent points into a
graphic, but i want to can interact with them too,so i need to click on them
and see in the satatus bar what're the coordenates,i need to can delete them,
and more things.
 I'm trying with gdk,but the problem is that i don't know how to interact with
 them,i only can represent them.
So,can anyone suggest me how to do it??
Thanks a lot!