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29 .\" $Id: form_variables.3x,v 1.4 2013/06/22 17:58:32 tom Exp $
30 .TH form_variables 3X ""
42 \- form system global variables
47 \fB#include <form.h>\fR
49 \fBFIELDTYPE * TYPE_ALNUM;\fR
50 \fBFIELDTYPE * TYPE_ALPHA;\fR
51 \fBFIELDTYPE * TYPE_ENUM;\fR
52 \fBFIELDTYPE * TYPE_INTEGER;\fR
53 \fBFIELDTYPE * TYPE_IPV4;\fR
54 \fBFIELDTYPE * TYPE_NUMERIC;\fR
55 \fBFIELDTYPE * TYPE_REGEXP;\fR
58 These are building blocks for the form library,
59 defining fields that can be created using \fBset_fieldtype\fP(3X).
60 Each provides functions for field- and character-validation,
61 according to the given datatype.
63 This holds alphanumeric data.
65 This holds alphabetic data.
67 This holds an enumerated type.
69 This holds a decimal integer.
71 This holds an IPv4 internet address, e.g., "127.0.0.1".
73 This holds a decimal number, with optional sign and decimal point.
75 This holds a regular expression.
77 The \fBTYPE_IPV4\fP variable is an extension not provided by older
78 implementations of the form library.