This macOS code retrieves a list of open windows and their titles, storing them in global variables and using two functions: enumWindows to get the list of windows and getTitle to retrieve the title of each window. The main function iterates over the list of windows, calling getTitle to print each title to the console.
The getTitle(int i) function retrieves the title of a window with the specified layer index i by searching through an array of window dictionaries and constructing a string with the window's layer index and owner name.
The getTitle(int i) function searches for a window with a matching layer index i in an array of window dictionaries.
If found, it constructs a string with the window's layer index and owner name, and returns a duplicate of this string as a C-style string.