form_field_validation(S)

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

Syntax

cc ... -lform -lcurses

#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(S) 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, TYPE_REGEXP.

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

field_arg(S) 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.

Warning

The header file form.h automatically includes the header files eti.h and curses.h.

Files

/usr/lib/libform.a: the library

Standards conformance

set_field_type(S), field_type(S), and field_arg(S) are not part of any currently supported standard; they were developed by UNIX System Laboratories, Inc. and are maintained by The SCO Group.

`E_OK`	-	The function returned successfully.
`E_SYSTEM_ERROR`	-	System error.