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form_field_info 3x 2024-03-16 ncurses 6.4 Library calls

form_field_info(3x)              Library calls             form_field_info(3x)




NAME

       dynamic_field_info, field_info - retrieve field characteristics


SYNOPSIS

       #include <form.h>

       int field_info(const FIELD *field,
                      int *rows, int *cols,
                      int *frow, int *fcol,
                      int *nrow, int *nbuf);

       int dynamic_field_info(const FIELD *field,
                              int *rows, int *cols, int *max);


DESCRIPTION

       The  function  field_info returns the sizes and other attributes passed
       in to the field at its creation  time.   The  attributes  are:  height,
       width,  row  of  upper-left corner, column of upper-left corner, number
       off-screen rows, and number of working buffers.

       The function dynamic_field_info returns the actual size of  the  field,
       and  its  maximum  possible  size.  If the field has no size limit, the
       location addressed by the third argument will be set to 0.  A field can
       be made dynamic by turning off the O_STATIC option with field_opts_off.


RETURN VALUE

       These routines return one of the following:

       E_OK The routine succeeded.

       E_SYSTEM_ERROR
            System error occurred (see errno(3)).

       E_BAD_ARGUMENT
            Routine detected an incorrect or out-of-range argument.


PORTABILITY

       These  routines  emulate  the  System  V  forms library.  They were not
       supported on Version 7 or BSD versions.

       A null (zero pointer) is accepted for any  of  the  return  values,  to
       ignore  that  value.  Not all implementations allow this, e.g., Solaris
       2.7 does not.


AUTHORS

       Juergen Pfeifer.  Manual pages and adaptation for new curses by Eric S.
       Raymond.


SEE ALSO

       curses(3x)  and  related  pages  whose names begin "form_" for detailed
       descriptions of the entry points.



ncurses 6.4                       2024-03-16               form_field_info(3x)