form_field_buffer()

field buffer control 

Curses Function


SYNOPSIS

#include <form.h>

int set_field_buffer(FIELD *field, int buf, const char *value);

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

int set_field_status(FIELD *field, bool status);

bool field_status(const FIELD *field);

int set_max_field(FIELD *field, int max);


DESCRIPTION

The function set_field_buffer() sets the numbered buffer of the given field to contain a given string. Buffer 0 is the displayed value of the field; other numbered buffers may be allocated by applications through the nbuf argument of (see field_new()) but are not manipulated by the forms library. The function field_buffer() returns the foreground attribute.

The function set_field_status() sets the associated status flag of field; field_status() gets the current value. The status flag is set to a nonzero value whenever the field changes.

The function set_max_field() sets the maximum size for a dynamic field. An argument of 0 turns off any maximum size threshold for that field.


RETURN VALUES

The field_buffer() function returns NULL on error.

The field_status() function returns TRUE or FALSE.

The remaining routines return one of the following:

E_OK 

The routine succeeded.

E_SYSTEM_ERROR 

System error occurred.

E_BAD_ARGUMENT 

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


NOTES

The header file <form.h> automatically includes the header file <curses.h>.


PORTABILITY

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


AUTHORS

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


AVAILABILITY

PTC MKS Toolkit for Professional Developers
PTC MKS Toolkit for Enterprise Developers
PTC MKS Toolkit for Enterprise Developers 64-Bit Edition


SEE ALSO

Functions:
curses(), form_cursor(), form_data(), form_driver(), form_field(), form_field_attributes(), form_field_info(), form_field_just(), form_field_new(), form_field_opts(), form_field_userptr(), form_field_validation(), form_fieldtype(), form_hook(), form_new(), form_new_page(), form_opts(), form_page(), form_post(), form_requestname(), form_userptr(), form_win()


PTC MKS Toolkit 10.1 Documentation Build 15.