Re: IB Instances
Re: IB Instances
- Subject: Re: IB Instances
- From: Jonathan Hess <email@hidden>
- Date: Fri, 27 May 2005 11:28:22 -0700
Hey Theodore -
In Interface Builder, you design instances of objects and you
serialize them into nib files. If you design a window, in one nib
file, and connect that window up to other objects, then when you read
that nib in at runtime, you'll get one new copy of all of those
objects. They will all be connected in the fashion that you specified
in IB. If you go on to open this nib several more times at run time with
+ [NSBundle loadNibNamed:(NSString *)aNibName owner:(id)owner]
You'll get one new copy of those objects each time. Creating
instances of a class programatically has no direct relation to the
instances you may have created in IB. You can think of IB as a tool
that lets you create objects and connect them together and then save
them to a file to be used later.
Be careful to realize that in interface builder you design instances,
and not classes. In some other interface design tools, you actually
define a class that you can instantiate over and over again with
something like "AccountWindow window = new AccountWindow()" and
you'll wind up with a new account window with all of the related
widgets already in place. In IB, you design one instance, of
AccountWindow, and read it over and over again with "+ [NSBundle
loadNibNamed:(NSString *)aNibName owner:(id)owner]" if you need more
than one copy. However, if you just said [[AccountWindow alloc]
initWithContentRect:....] You'd only get the window, and none of it's
connections or widgets would be in place.
Good Luck -
Jon Hess
On May 27, 2005, at 10:59 AM, Theodore H. Smith wrote:
Let's say I make some NSWindow instances with IBOutlets, and
connect them in IB.
Then let's say I make a few of these windows in my compiled app.
What happens to the connections and the instances? Do I get
multiple instances of everything defined in that nib, all connected
to each other? Or does only the window get multiple instances, and
then we have a many-to-one relationship with the connections?
Or something else?
As always, forward me the appropriate docs, as I'm not sure where
to look for information on instances right here.
--
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"All things are logical. Putting free-will in the slot for premises in
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| References: | |
| | >IB Instances (From: "Theodore H. Smith" <email@hidden>) |