Question

It is my first time using NSTextView and I am having a hard time figuring out how it works, I have a line like this:

    [[commandHistoryTextView textStorage] appendString:outputString];

and I get this error:

2012-02-24 12:40:52.971 binoclean[37863:703] Exception detected while handling key input.
2012-02-24 12:40:52.971 binoclean[37863:703] -[NSConcreteTextStorage appendString:]: unrecognized selector sent to instance 0x2cca10
2012-02-24 12:40:52.975 binoclean[37863:703] (
0   CoreFoundation                      0x9bf55b67 __raiseError + 231
1   libobjc.A.dylib                     0x9b5c8149 objc_exception_throw + 155
2   CoreFoundation                      0x9bf59170 -[NSObject doesNotRecognizeSelector:] + 256
3   CoreFoundation                      0x9bea7da9 ___forwarding___ + 457
...

Any comments appreciated, greatly.

Answer 1

-appendString: is a method on NSMutableString. NSTextStorage is a subclass of NSMutableAttributedString. You could call -appendString: on the textStorage’s mutableString like so:

[commandHistoryTextView.textStorage.mutableString appendString:outputString];