Re: Newbie Q : getting rid of MyDocument
Re: Newbie Q : getting rid of MyDocument
- Subject: Re: Newbie Q : getting rid of MyDocument
- From: Sean Murphy <email@hidden>
- Date: Tue, 13 Jun 2006 16:47:20 -0400
On Jun 13, 2006, at 4:00 AM, email@hidden wrote:
So I created fresh new files YourDocument.h,.m,&.nib (YourDocument is
a subclass of NSDocument) in the new
project, and copied all the code, view data and connections. The
new project builds without problem, but I don't know what to do next :
where and how do I tell the application to launch YourDocument.nib
when the application is opened ?
Hey Ewan,
You must edit your application's Info.plist, and register your
NSDocument subclass as the class for a particular document type.
Choose Project>Edit Active Target, and under the "Properties" tab,
add an entry for your document and make sure you set "Class" to
contain your custom NSDocument subclass.
The whole document-based app thing was confusing me as well, because
it seemed almost like voodoo that the NSDocument subclass was
instantiated at launch time. Nowhere was a delegate set for
NSApplication, and no object in MainMenu.nib was responsible for
creating the new document.
The document-type registered in the Info.plist seems to prompt the
use of document-based objects, such as NSDocumentController, etc.
This is how you can the application to launch MyDocument.nib. From
the ADC:
"However, if your application subclasses NSDocument to handle a
specific document type, you should specify the document subclass name
as the Sketch application (which is available in /Developer/Examples/
AppKit/Sketch) does with SKTDrawDocument ."
<http://developer.apple.com/documentation/Cocoa/Conceptual/Documents/
Concepts/DocTypePList.html#//apple_ref/doc/uid/20000024>
To read up some more about how the NSDocument architecture works, see
the following documentation pages:
Actual Implementation of a Doc-Based app:
<http://developer.apple.com/documentation/Cocoa/Conceptual/Documents/
Tasks/ImplementingDocApp.html#//apple_ref/doc/uid/20000029>
Entire overview of Doc-based:
<http://developer.apple.com/documentation/Cocoa/Conceptual/Documents/
index.html>
Hopefully that helps.
-Murph
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