Function libeyelink_sys::open_data_file

pub unsafe extern "C" fn open_data_file(name: *mut c_char) -> INT16

These functions were added as future revisions of EyeLink might require significant time to open and close EDF files Opens EDF file on tracker hard disk Opens an EDF file, closes any existing file.

@param name Name of data file,which can only use letters(uppercase and lowercase), numbers(0-9),and underscore(appears from 2nd place). Name extension can only be edf. @return Returns \c 0 if success, else error code.