Opens the file and returns a pointer to a \helpref{wxFSFile}{wxfsfile} object
or NULL if failed. It first tries to open the file in relative scope
(based on value passed to ChangePathTo() method) and then as an
Opens the file and returns a pointer to a \helpref{wxFSFile}{wxfsfile} object
or NULL if failed. It first tries to open the file in relative scope
(based on value passed to ChangePathTo() method) and then as an