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From: adonis1@nwnexus.WA.COM (Adonis Corporation )
Newsgroups: comp.sys.next
Subject: Re: Help, please, on making connections in IB
Message-ID: <492@nwnexus.WA.COM>
Date: 20 Apr 91 17:04:40 GMT
References: <2524@fornax.UUCP>
Reply-To: adonis1@nwnexus.UUCP (Adonis Corporation (Doug Kent))
Distribution: na
Organization: Northwest Nexus Inc.; Seattle, WA
Lines: 60

In article <2524@fornax.UUCP> mcdonald@fornax.UUCP (Ken Mcdonald) writes:

[stuff deleted so I can mail this]

>First, I'd like to use a subclass of the "TextField" class, which I call
>"EntryField"; an EntryField object is defined to respond to one additional
>action message (besides those defined by a standard text field), called
[stuff deleted]
>"update".  The idea is that the user enters data into this text field,
>informing it of the presence of new data in the field.  This may be a bit
>klugey, but that's OK--this is just a prototype.

You could have the button send a message to the application telling it that
there is new data in the TextField.  Then you have no need to subclass
the TextField object.

>
>The first problem is that I can't even create an object of class EntryField
>in Interface Builder.  The class definition is no problem, but I can find
[stuff deleted]
>how do I create an object of this class in Interface Builder, so as to 
>make connections to and from it?

If you really want to subclass it you do it by dragging a CustomView
object from the IB pallete to where your TextField goes.  In the attributes
section of the Inspector (Command-1), select EntryField as the class
you wish you CustomView to have (press OK).  Do a File.TestInterface
to see what it'll look like when you run.

>
>My other question is very similar.  The application itself will be an
>object of type "MyApp", which is a subclass of the Application class, with
>some extra action messages and so forth.  Again, I can find no way to create
>or refer to this object in Interface Builder; so there is no way, for
>example, that I can tell my EntryField object that it should send a
>"newData:" message to the application, in response to  the "update:" message
>it just received.
>

You could try this: 

Click on File's Owner in your suitcase panel and do command-1.  Select
MyApp for its class (press OK).  Now you can create connections between 
the owner (subclass MyAPP) and your interface objects by dragging around
in IB.

in your appname_main.m file you might have to replace
	NXApp = [Application new];
with
	NXApp = [MyApp new];

(I think this'll get wiped out when you resave in IB)(?).

The above steps may not work.  I don't really understand the relation between
the File Owner (of class Application) and NXApp, also of class Application.
Anybody have a contribution to this?

Doug Kent
Independent NeXT Developer
adonis1@nwnexus.wa.com