form_field_buffer(3) - NetBSD Manual Pages

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FORMS(3)                NetBSD Library Functions Manual               FORMS(3)


NAME

     field_buffer, field_status, set_field_buffer, set_field_printf,
     set_field_status, set_max_field - form library


LIBRARY

     Curses Form Library (libform, -lform)


SYNOPSIS

     #include <form.h>

     char *
     field_buffer(FIELD *field, int buffer);

     int
     field_status(FIELD *field);

     int
     set_field_buffer(FIELD *field, int buffer, char *value);

     int
     set_field_printf(FIELD *field, int buffer, char *fmt, ...);

     int
     set_field_status(FIELD *field, int status);


DESCRIPTION

     The field_buffer() function returns the contents of the buffer number
     specified by buffer for the given field.  If the requested buffer number
     exceeds the number of buffers attached to the field then NULL will be
     returned.  The field buffer may be set by calling set_field_buffer()
     which will set the given buffer number to the contents of the string
     passed.  A buffer may also be set by calling set_field_printf() which
     sets the buffer using the format arg fmt after being expanded using the
     subsequent arguments in the same manner as sprintf(3) does.  Calling
     field_status() will return the status of the first buffer attached to the
     field.  If the field has been modified then the function will return TRUE
     otherwise FALSE is returned, the status of the first buffer may be pro-
     grammatically set by calling set_field_status().  The maximum growth of a
     dynamic field can be set by calling set_max_field() which limits the
     fields rows if the field is a multiline field or the fields columns if
     the field only has a single row.


RETURN VALUES

     Functions returning pointers will return NULL if an error is detected.
     The functions that return an int will return one of the following error
     values:

     E_OK               The function was successful.
     E_BAD_ARGUMENT     A bad parameter was passed to the function.
     E_SYSTEM_ERROR     A system error occurred performing the function.


SEE ALSO

     curses(3), forms(3)


NOTES

     The header <form.h> automatically includes both <curses.h> and <eti.h>.
     The function set_field_printf() is a NetBSD extension and must not be
     used in portable code.

NetBSD 2.0                      January 1, 2001                     NetBSD 2.0