Re: Overlapping Views

FROM : Jean-Daniel Dupas
DATE : Fri Nov 23 18:16:56 2007

>
> This particular app would be a full-screen app. The main window, 
> covering most if not all of the screen, would have a background 
> image with other controls directly on top of it. They would be 
> customized to the extent I could in IB & sub-classed if necessary, 
> which I know that I will have to do to achieve the behavior & 
> appearance I want in some. Since the NSImage view doesn't support 
> sub-views (I'm assuming it doesn't since IB won't let me put any in 
> it), I was trying to have the NSImage view behind the other views 
> so I wouldn't have to customize a NSView & draw the image manually.
>
> This will be my very first app written in Cocoa/Obj-C, and I'm very 
> used to having compositing views in Carbon. I won't be overlapping 
> views like this though if it isn't really supported, since I don't 
> want my app to possibly have erratic drawing/refresh behavior.
>
>
> Regards,
> David Alger


Assumption are evil. AFAK Image view should support subview.
IB will not let you add subview, but you can replace your image view 
by a custom view. Set the class of the custom view to NSImageView, 
and set the image you want to display in -awakeFromNib.
That's the easiest way i see to workaround this IB limitation.

Jean-Daniel