wxHelp.
GUI applications aren't all graphical wizardry. List and hash table needs are
-catered for by \helpref{wxList}{wxlist}, \helpref{wxStringList}{wxstringlist} and \helpref{wxHashTable}{wxhashtable}.
+catered for by \helpref{wxList}{wxlist}, \helpref{wxStringList}{wxstringlist} and \helpref{wxHashMap}{wxhashmap}.
You will undoubtedly need some platform-independent \helpref{file functions}{filefunctions},
and you may find it handy to maintain and search a list of paths using \helpref{wxPathList}{wxpathlist}.
There's a \helpref{miscellany}{miscellany} of operating system and other functions.