How do you convert an iPhone OSStatus code to something useful?

Question

I am getting more than a little sick of this iPhone SDK and its documentation...

I am calling AudioConverterNew

in the documentation under Returns: it says \

Answer 1

Failing a description string, it's convenient to convert OSStatus values to strings that look like their four-character definitions. At least then you can grep headers in hopes of finding a comment about what the status means.

// declaration:  extern CFStringRef CreateTypeStringWithOSType(OSType inType);

OSStatus result = ...;

if (result != noErr) {
    NSString *statusString = (NSString *)CreateTypeStringWithOSType(result);
    NSLog(@"Error while $VERBing: %@", statusString);
    [statusString release]; // because "Create..."
    statusString = nil;
}