The Core iOS Developer’s Cookbook, Fifth Edition

Rectangle Utility Functions

As you’ve seen, the CGRectMake() function creates its new rectangle using four parameters: the origin’s x and y locations, the width of the rectangle, and the height. This method is a critical utility for creating frames. You may want to be aware of several other convenience functions, in addition to CGRectMake(), that help you work with rectangles and frames:

NSStringFromCGRect(aCGRect) converts a CGRect structure to a formatted string. This function makes it easy to log a view’s frame when you’re debugging.

CGRectFromString(aString) ...