[asmodeus]

Hi everyone... over the University summer holiday, I've decided to learn Objective-C and Cocoa, after initially messing about with it from some articles on macdevcenter.com.

I'm running OS X 10.2 with the version of the dev tools that came with it.

I ordered Learning Cocoa with Objective-C (2nd Edition) and Building Cocoa Applications as they were reasonably priced when bought together from Amazon.

I got through the Learning Cocoa book in a few days, and had no trouble understanding it or doing any of the examples. However, I'm having some trouble with some of the code in the MathPaper section of Building Cocoa.

I can't figure out why the following code isn't working:

- (void)textDidChangeNSNotification *)notification
{
NSString * key = [[[self window] currentEvent] characters];

// if key is equal to carriage return
if ( [key isEqualToString:@"\r"] ) { ...

Enter never seems to equal \r or \n, and I can't figure out why.. the page the code is on is 338. Using NSLog shows that it is getting the last character properly.

Can anybody help me get this working, or explain why the current code doesn't work?

edit: it's in the delegate class for an NSTextView, which is a subclass of NSWindowController.

[smeger]

NSTextView can send its action on a carriage return (it's an option in Interface Builder). Maybe that's consuming the carriage return?

[asmodeus]

I looked for the option but can't seem to find it.

I've moved on in the book anyway, writing some smaller programs for the remaining part of that section of the book to follow the exercises.

[lfrog2]

Is your window's delegate outlet set to be you PaperController. PaperController should be set as the File's Owner in the PaperWindow.nib.

[asmodeus]

Yep, I've got that set correctly.

I've probably missed something minor somewhere. It's now actually detecting the carriage return properly, which is very strange - I didn't change anything, just resaved the PaperWindow nib file without making any changes.

Thanks for the suggestion though.