form_variables(3X)

NAME
TYPE_ALNUM, TYPE_ALPHA, TYPE_ENUM, TYPE_INTEGER, TYPE_IPV4, TYPE_NUMERIC, TYPE_REGEXP - form system global variables

SYNOPSIS
#include <form.h>

FIELDTYPE * TYPE_ALNUM;
FIELDTYPE * TYPE_ALPHA;
FIELDTYPE * TYPE_ENUM;
FIELDTYPE * TYPE_INTEGER;
FIELDTYPE * TYPE_IPV4;
FIELDTYPE * TYPE_NUMERIC;
FIELDTYPE * TYPE_REGEXP;

DESCRIPTION
These are building blocks for the form library, defining fields that can be created using set_fieldtype(3X). Each provides functions for field- and character-validation, according to the given datatype.

  TYPE_ALNUM
This holds alphanumeric data.

  TYPE_ALPHA
This holds alphabetic data.

  TYPE_ENUM
This holds an enumerated type.

  TYPE_INTEGER
This holds a decimal integer.

  TYPE_IPV4
This holds an IPv4 internet address, e.g., "127.0.0.1".

  TYPE_NUMERIC
This holds a decimal number, with optional sign and decimal point.

  TYPE_REGEXP
This holds a regular expression.

PORTABILITY
The TYPE_IPV4 variable is an extension not provided by older implementations of the form library.

SEE ALSO
form(3X).