form_variables 3x 2024-03-16 ncurses 6.4 Library calls

form_variables(3x)               Library calls              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 the form_fieldtype(3x) functions.  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.