RE: fundamental question: how do I call controller methods from other classes?
RE: fundamental question: how do I call controller methods from other classes?
- Subject: RE: fundamental question: how do I call controller methods from other classes?
- From: "Matthew Youney" <email@hidden>
- Date: Wed, 21 May 2008 23:15:34 -0400
- Importance: Normal
Jens, Shawn,
Thanks.
I have my application working, however not exactly as I would like. What I
did was, in IB, created a NSObject, and set it to my POSsocket class. I
understand now that IB "automatically" instantiates this classes that you
put in there. I added the required outlets, and I can do what I need to do.
I would prefer to separate I/O activities, business logic, etc from the GUI,
as well as be able to instantiate objects programmatically, and that is what
I have been attempting to do, I just have no mechanism of sending messages
to my "controller" class from my "model" objects unless the "controller"
makes the call.
I guess I just have to get my head around it, and design appropriately.
Again, thanks so much for your help,
Matt
-----Original Message-----
From: Jens Alfke [mailto:email@hidden]
Sent: Wednesday, May 21, 2008 10:06 PM
To: email@hidden
Cc: email@hidden
Subject: Re: fundamental question: how do I call controller methods from
other classes?
On 21 May '08, at 5:07 PM, Matthew Youney wrote:
> The name of the controller object in interface builder is
> myPOSsocketController, and the following gives the compiler error
> "myPOSsocketController undeclared or first use in function"
If you want an object in a nib to know about another one, then modify
its class to add an instance variable declared as an IBOutlet:
@interface POSocket
{
...
IBOutlet POSocketController myController;
Save the .h file and IB will now know about that outlet, and you can
control-drag from the POSocket to the controller and assign the
myController instance variable.
Typically what happens is that you have a controller object (often an
NSWindowController) that's the nib's owner, and you add outlets to it
for all the other nib objects you need to reference directly. It's
rarer for other objects in the nib to have outlets pointing to each
other, but it happens sometimes.
-Jens
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