[Drawkit] permanent objects

[James Maxwell]

Hi All,

I'm just wondering if anyone knows how to create an object that can't  
be deleted?
I have a timeline-like object at the top of my window which I build  
during my -awakeFromNib, and I don't want it to be possible to delete  
it, or to undo its creation. And actually, while I'm on the topic, I  
also don't want it to invoke drag and drop... Basically, I'm trying to  
create an object which really can't be edited, in any way, but I do  
need to detect mouseDowns on its surface (I'm using it to create  
DKGuides).

Any help appreciated.

thanks,

J.