how to forward the event into the document view of the clip view in a NSScrollView?

FROM : Scott.D.R
DATE : Sun Mar 02 23:55:38 2008

Hi everyone.

As the title mentioned, I found something odd when using the 
IKimageview with NSScrollView.
That is, At first, I directly drop a IKImageView into a window. And in 
my application, I set the source of the IKImageview. After the 
application run, I double-click the IKimageView and the image 
adjustment panel showed up. Everything is perfect.

Then I changed the style: I used a new window and placed a 
NSScrollview on it. Then I specify the document view which shows the 
"Custom view" in the NSScrollview to be a IKImageview. And in the 
application, I set the source the IKimageview. After the application 
run, the IKImageView shows the image. However, this time I double-
click the IKimageview, the image adjustment panel didn't show up.

Can anyone tell me what's problem and how to solve it?
Thank you very much for any help.

Best regards.