A foreign type for the Objective-C structure type
The FLI type
ns-rect is a structure type for use as the Objective-C type
NSRect. The structure has two slots,
:origin of foreign type ns-point and
:size of foreign type ns-size.
When used directly in method definition or invocation, it allows automatic conversion to/from a vector of four elements of the form
LispWorks Objective-C and Cocoa Interface User Guide and Reference Manual - 15 Feb 2015