form_field_validation(3X)        DG/UX 5.4.2       form_field_validation(3X)


NAME
       formfieldvalidation:  setfieldtype, fieldtype, fieldarg - forms
       field data type validation

SYNOPSIS
       #include <form.h>

       int setfieldtype(FIELD *field, FIELDTYPE *type, ...);
       FIELDTYPE *fieldtype(FIELD *field);
       char *fieldarg(FIELD *field);

DESCRIPTION
       setfieldtype  associates  the  specified  field  type  with  field.
       Certain  field  types  take  additional  arguments.   TYPEALNUM, for
       instance, requires one,  the  minimum  width  specification  for  the
       field.   The other predefined field types are: TYPEALPHA, TYPEENUM,
       TYPEINTEGER, TYPENUMERIC, TYPEREGEXP.

       fieldtype returns a pointer to the field type  of  field.   NULL  is
       returned if no field type is assigned.

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

RETURN VALUE
       fieldtype and fieldarg return NULL on error.

       setfieldtype returns one of the following:
       EOK           - The function returned successfully.
       ESYSTEMERROR - System error.

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

SEE ALSO
       curses(3X), forms(3X).



















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