How to associate a view with Color Panel

FROM : Fei Li
DATE : Wed Nov 03 19:51:42 2004

Hello all,
I know these are simple questions but I really can't figure it out.

I opened a NSColorPanel by click on a normal button. I have a customer
view to show a sample line in it. I hope it's drew in the color picked
in the color panel. I know the changeColor function can do this but I
don't know how to connect it to the color panel, even I set
[[NSColorPanel sharedColorPanel] setDelegate:self] in that customer
view, it still doesn't work.

Another problem is I can't close the color panel. I click on the red
button on the color panel, nothing happened, the color panel doesn't go
away. I guess I must miss something.

Thanks for any information to help me out!
Fei