I'm trying to use exclusionPaths for the first time and am not having any success. For now, I'm just creating the stuff on the fly in my drawLayer:inContext: method:. The string draws, but doesn't exclude any path no matter what I set it to. I'm also not that familiar with the whole NSTextStorage/NSLayoutManager/NSTextContainer family, other than using snippets of code in the past, so it could be I'm doing something dumb. Any ideas?

-(void)drawLayer:(CALayer*)layer inContext:(CGContextRef)ctx
{
if([layer.name isEqualToString:@"balloons"]) {
UIGraphicsPushContext(ctx);

CGRect box = CGRectMake(0, 0, 400, 400);
NSTextStorage* storage = [[NSTextStorage alloc] initWithString:@"I like little pigs who run and scurry away from the butcher, because the butcher is carrying a large cleaver and wants to chop them up into delicious sandwiches!" attributes:@{NSFontAttributeName:[UIFont systemFontOfSize:36]}];
UIBezierPath* bez = [UIBezierPath bezierPathWithRect:CGRectMake(100, 100, 100, 100)];
NSLayoutManager* lman = [NSLayoutManager new];

[storage addLayoutManager:lman];

NSTextContainer* cont = [[NSTextContainer alloc] initWithSize:box.size];

cont.exclusionPaths = @[bez];
[lman addTextContainer:cont];

// Trying different things to see if they make it work - nope.
[lman textContainerChangedGeometry:cont];
[lman invalidateLayoutForCharacterRange:NSMakeRange(0, storage.length) actualCharacterRange:nil];

[storage drawInRect:box];

UIGraphicsPopContext();
}
}

--
Steve Mills
Drummer, Mac geek