On 3 Feb 2011, at 00:36, Kyle Sluder wrote:
> On Wed, Feb 2, 2011 at 4:12 PM, Mark Allan <markjal...@blueyonder.co.uk> 
> wrote:
>>        [consoleTextView replaceCharactersInRange:endRange 
>> withString:newText]; /**/ crashes here
> 
> You didn't call -shouldChangeTextInRange:replacementString: first, or
> call -didChangeText when you were done.
> 
> When working with the text system, it's important to remember to check
> both the NSText and NSTextView documentation. The text system is quite
> possibly the most confusing part of Cocoa.

Thanks very much, Kyle.  I'll go back and read the documentation again - 
properly this time!  I assumed that the "shouldChangeTextInRange" delegate 
method was something called automatically by the AppKit framework and that I 
didn't have to worry about it.  Apple's sample code ('log' method on the URL 
below) on the developer documentation website doesn't have those calls either, 
so that pretty much cemented my misunderstanding.
        http://tinyurl.com/BaseWindowController-m

Thanks again for setting me straight.

Mark
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