Re: importing MyDocument.h compiler errors and warnings
Re: importing MyDocument.h compiler errors and warnings
- Subject: Re: importing MyDocument.h compiler errors and warnings
- From: Derrek Leute <email@hidden>
- Date: Tue, 17 Oct 2006 18:09:24 -0400
Yep! That did it.
Is there a basic tutorial documentation that has this kind of
information?
I've read a lot of the Objective-c and cocoa basic programming
tutorials, and I think I have a strong grasp of design patterns and
other issues, but I keep getting stumped by simple things like this.
Thanks!
--Derrek
On Oct 17, 2006, at 5:58 PM, Ivan Kourtev wrote:
Derrek,
If I understand correctly, you have an #import "MyDocument.h" line
at the beginning of TreeWrapper.h, correct?
if so, simply replace it with the following line
@class MyDocument;
and continue to iimport "MyDocument.h" in "TreeWrapper.m" file.
Hope this helps,
--
ivan
On Oct 17, 2006, at 5:52 PM, Derrek Leute wrote:
In my objects I need to know the document they belong to. To
accomplish this, I created a reference to the currentDocument upon
the object initialization. Simplified Code:
@interface TreeWrapper : NSObject
{
NSDocument *document;
}
- (id) init
{
self = [super init];
if (self != nil) {
document = [[NSDocumentController sharedDocumentController]
currentDocument];
}
return self;
}
This works fine except it generates compiler warnings as I try and
call methods that are custom to my subclass of NSDocument. The
program compiles and runs as expected though.
If I switch it to MyDocument *document I need to also import
"MyDocument.h". This causes some sort of error where it can't find
the TreeWrapper which is the super class to my data objects.
"error: cannot find interface declaration for 'TreeWrapper',
superclass of '(one of my subclasses)'
It generates this for many of my data objects. The problem seems
to be that including MyDocument.h reincludes my root data object
which is a sub class of TreeWrapper.
Anyone have any ideas?
--Derrek
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