Function libeyelink_sys::open_eyelink_system

pub unsafe extern "C" fn open_eyelink_system(
    bufsize: UINT16, 
    options: *mut c_char
) -> UINT16

@ingroup init_eyelink Use this function to initialize the EyeLink library. This will also start the millisecond clock. No connection is attempted to the eyetracker yet. It is preferable to call open_eyelink_connection(\c -1) instead, as this prepares other parts of the DLL for use.

@remarks MUST BE FIRST CALL TO LINK INTERFACE. @param bufsize Size of sample buffer. \c 60000 is the maximum allowed. (\c 0 for default) @param options Text specifying initialization options. Currently no options are supported. (\c NULL or "" for defaults) @return \c 0 if failed, nonzero (\c -1 or TSR SWI number) if success.

\b Example:

\code

#include 
int dummy = 0;  // Sets the connection type

if(!open_eyelink_system(0, ""))
{
printf("\nERROR: Cannot initialize eyelink library\n");
return -1;
}

if(dummy)
i = eyelink_dummy_open(); // Starts a dummy connection
else
i = eyelink_open();  // Connects to the tracker

...

if(eyelink_is_connected())
{
set_offline_mode();
eyecmd_printf("close_data_file");    // close data file
eyelink_close(1);         // disconnect from tracker
}

close_eyelink_system();
\endcode

\sa \c close_eyelink_connection(), \c close_eyelink_system(), \c eyelink_close() and \c eyelink_open()