Version of the program interface

You can use the function call ft_properties() to determine the version of the openFT program interface, as well as important version-specific system values. With this function, you ensure the executability of future versions of openFT - even without recompilation. This function call is above all important when you use programs that are to run with different versions of the program interface.

ft_options

The ft_credir() function introduced in version 2 of the openFT program interface and the extended file structures can only be used if the options parameter is specified for the corresponding functions.
The functions ft_sdopen() and ft_xcopen() introduced in version 3 of the openFT program interface can only be used if the options parameter is specified in the associated functions.
The ft_options structure is constructed as follows:

struct ft_options
{
   int ftoptsvers;   /* input */
   int ftapivers;    /* input */
};

The fields in the structure have the following meaning:
ftoptsvers

Version of the data structure.
The value FT_OPTSV1 must be entered for ftoptsvers.

ftapivers

Specifies the version of the program interface:
FT_APIV2

The openFT message number (ft_err.detail=FTED_FTMSG) specified in the additional parameter adheres to the new message number schema which was introduced in openFT V10.

FT_APIV3

This is required in order to use the functions ft_sdopen() and ft_xcopen(). The openFT message number (ft_err.detail =FTED_FTMSG) specified in the additional parameter has the new message number scheme that was introduced in openFT V10.