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man pages section 3: Curses Library Functions

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Updated: Thursday, June 13, 2019
 
 

form_field_validation(3CURSES)

Name

form_field_validation, set_field_type, field_type, field_arg - forms field data type validation

Synopsis

cc [ flag... ] file... –lform –lcurses [ library... ]
#include <form.h>

int set_field_type(FIELD *field, FIELDTYPE *type...);
FIELDTYPE *field_type(FIELD *field);
char *field_arg(FIELD *field);

Description

set_field_type() associates the specified field type with field. Certain field types take additional arguments. TYPE_ALNUM, for instance, requires one, the minimum width specification for the field. The other predefined field types are: TYPE_ALPHA, TYPE_ENUM, TYPE_INTEGER, TYPE_NUMERIC, and TYPE_REGEXP.

field_type() returns a pointer to the field type of field. NULL is returned if no field type is assigned.

field_arg() returns a pointer to the field arguments associated with the field type of field. NULL is returned if no field type is assigned.

Return Values

field_type() and field_arg() return NULL on error.

set_field_type() returns one of the following:

E_OK

The function returned successfully.

E_SYSTEM_ERROR

System error.

Attributes

See attributes(7) for descriptions of the following attributes:

ATTRIBUTE TYPE
ATTRIBUTE VALUE
MT-Level
Unsafe

See Also

curses(3CURSES), forms(3CURSES), attributes(7)

Notes

The header <form.h> automatically includes the headers <eti.h> and <curses.h>.