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Name

form_field_buffer - field buffer control

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 form_field_new(3X) ) 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 Value

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 (see errno).
E_BAD_ARGUMENT
Routine detected an incorrect or out-of-range argument.

See Also

curses(3X) and 3X pages whose names begin «form_» for detailed descriptions of the entry points.

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.


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