NSView autoresizing

FROM : Cathy Shive
DATE : Tue Apr 03 23:04:59 2007

Hello,

I am having some trouble with autoresizing my NSView.

I have a window with a single NSView subclass that I created by
dragging a CustomView from the IB Pallette Window.  I want the view,
myCustomView, to keep it's original width and height but to stay
centered in the window when the window is resized.  To do this, I can
either set the autoresizing mask in IB by placing springs around each
side or I can set it programmatically with the following code:

[myCustomView  setAutoresizingMask: NSViewMinYMargin |
NSViewMaxYMargin |NSViewMinXMargin | NSViewMaxYMargin];

Either way, I get the same behavior.  The view stays centered until i
resize the window smaller than the view.  Then, when I expand the
window again, the view becomes stuck to one of the window's sides.  If
I repeat this action over and over, the view will unstick and stick to
different sides of the window.

I can correct this behavior by overriding the
-(void)resizeWithOldSuperviewSize: method in my custsom view, but I'd
like to understand why it's happening in the first place.

Any thoughts?

Thanks,
Cathy