Q:

How can I calculate the center of an NSButton?

I'm not sure how to find the center of my button:
spinner = [[EKActivityIndicatorView alloc] initWithFrame:CGRectMake([followButton bounds].origin.x/2, [followButton bounds].origin.y/2, 16, 16)];

Dividing the frame.x and frame.y does not do the trick

A:

The correct way is to do:
CGRectMake(CGRectGetMidX([followButton frame]), CGRectGetMidY([followButton frame]), 16, 16)

Alternatively, the correct formula is:
CGRect frame;
CGPoint center;
frame = [view frame];
center.x = frame.origin.x + (frame.size.width / 2);
center.y = frame.origin.y + (frame.size.height / 2);

