Is It Possible to NSLog C Structs (Like CGRect or CGPoint)?

c objective-c cocoa cocoa-touch
mazniak picture mazniak · Feb 15, 2009 · Viewed 105.6k times · Source

I want to be able to debug C structures without having to explicitly type every property that they consist of.

i.e. I want to be able to do something like this:

CGPoint cgPoint = CGPointMake(0,0);
NSLog(@"%@",cgPoint);

Obviously the '%@' won't work, hence the question.

Answer

Alex picture Alex · Feb 15, 2009

You can try this:

NSLog(@"%@", NSStringFromCGPoint(cgPoint));

There are a number of functions provided by UIKit that convert the various CG structs into NSStrings. The reason it doesn't work is because %@ signifies an object. A CGPoint is a C struct (and so are CGRects and CGSizes).

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