diff options
Diffstat (limited to 'ncurses-5.9/doc/html/man/form_fieldtype.3x.html')
-rw-r--r-- | ncurses-5.9/doc/html/man/form_fieldtype.3x.html | 190 |
1 files changed, 190 insertions, 0 deletions
diff --git a/ncurses-5.9/doc/html/man/form_fieldtype.3x.html b/ncurses-5.9/doc/html/man/form_fieldtype.3x.html new file mode 100644 index 0000000..7f195ee --- /dev/null +++ b/ncurses-5.9/doc/html/man/form_fieldtype.3x.html @@ -0,0 +1,190 @@ +<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN"> +<!-- + * t + **************************************************************************** + * Copyright (c) 1998-2006,2010 Free Software Foundation, Inc. * + * * + * Permission is hereby granted, free of charge, to any person obtaining a * + * copy of this software and associated documentation files (the * + * "Software"), to deal in the Software without restriction, including * + * without limitation the rights to use, copy, modify, merge, publish, * + * distribute, distribute with modifications, sublicense, and/or sell * + * copies of the Software, and to permit persons to whom the Software is * + * furnished to do so, subject to the following conditions: * + * * + * The above copyright notice and this permission notice shall be included * + * in all copies or substantial portions of the Software. * + * * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS * + * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. * + * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, * + * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR * + * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR * + * THE USE OR OTHER DEALINGS IN THE SOFTWARE. * + * * + * Except as contained in this notice, the name(s) of the above copyright * + * holders shall not be used in advertising or otherwise to promote the * + * sale, use or other dealings in this Software without prior written * + * authorization. * + **************************************************************************** + * @Id: form_fieldtype.3x,v 1.16 2010/12/04 18:40:45 tom Exp @ +--> +<HTML> +<HEAD> +<TITLE>form_fieldtype 3x</TITLE> +<link rev=made href="mailto:bug-ncurses@gnu.org"> +<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1"> +</HEAD> +<BODY> +<H1>form_fieldtype 3x</H1> +<HR> +<PRE> +<!-- Manpage converted by man2html 3.0.1 --> +<STRONG><A HREF="form_fieldtype.3x.html">form_fieldtype(3x)</A></STRONG> <STRONG><A HREF="form_fieldtype.3x.html">form_fieldtype(3x)</A></STRONG> + + + + +</PRE> +<H2>NAME</H2><PRE> + <STRONG>form_fieldtype</STRONG> - define validation-field types + + +</PRE> +<H2>SYNOPSIS</H2><PRE> + <STRONG>#include</STRONG> <STRONG><form.h></STRONG> + FIELDTYPE *new_fieldtype( + bool (* const field_check)(FIELD *, const void *), + bool (* const char_check)(int, const void *)); + int free_fieldtype(FIELDTYPE *fieldtype); + int set_fieldtype_arg( + FIELDTYPE *fieldtype, + void *(* const make_arg)(va_list *), + void *(* const copy_arg)(const void *), + void (* const free_arg)(void *)); + int set_fieldtype_choice( + FIELDTYPE *fieldtype, + bool (* const next_choice)(FIELD *, const void *), + bool (* const prev_choice)(FIELD *, const void *)); + FIELDTYPE *link_fieldtype(FIELDTYPE *type1, + FIELDTYPE *type2); + + +</PRE> +<H2>DESCRIPTION</H2><PRE> + The function <STRONG>new_fieldtype</STRONG> creates a new field type usable + for data validation. You supply it with <EM>field</EM><STRONG>_</STRONG><EM>check</EM>, a + predicate to check the validity of an entered data string + whenever the user attempts to leave a field. The (FIELD + *) argument is passed in so the validation predicate can + see the field's buffer, sizes and other attributes; the + second argument is an argument-block structure, about + which more below. + + You also supply <STRONG>new_fieldtype</STRONG> with <EM>char</EM><STRONG>_</STRONG><EM>check</EM>, a function + to validate input characters as they are entered; it will + be passed the character to be checked and a pointer to an + argument-block structure. + + The function <STRONG>free_fieldtype</STRONG> frees the space allocated for + a given validation type. + + The function <STRONG>set_fieldtype_arg</STRONG> associates three storage- + management functions with a field type. The <EM>make</EM><STRONG>_</STRONG><EM>arg</EM> + function is automatically applied to the list of arguments + you give <STRONG>set_field_type</STRONG> when attaching validation to a + field; its job is to bundle these into an allocated argu- + ment-block object which can later be passed to validation + predicated. The other two hook arguments should copy and + free argument-block structures. They will be used by the + forms-driver code. You must supply the <EM>make</EM><STRONG>_</STRONG><EM>arg</EM> function, + the other two are optional, you may supply NULL for them. + In this case it is assumed that <EM>make</EM><STRONG>_</STRONG><EM>arg</EM> does not allocate + memory but simply loads the argument into a single scalar + value. + + The function <STRONG>link_fieldtype</STRONG> creates a new field type from + the two given types. They are connected by an logical + 'OR'. + + The form driver requests <STRONG>REQ_NEXT_CHOICE</STRONG> and + <STRONG>REQ_PREV_CHOICE</STRONG> assume that the possible values of a field + form an ordered set, and provide the forms user with a way + to move through the set. The <STRONG>set_fieldtype_choice</STRONG> func- + tion allows forms programmers to define successor and + predecessor functions for the field type. These functions + take the field pointer and an argument-block structure as + arguments. + + +</PRE> +<H2>RETURN VALUE</H2><PRE> + The pointer-valued routines return NULL on error. They + set errno according to their success: + + <STRONG>E_OK</STRONG> The routine succeeded. + + <STRONG>E_BAD_ARGUMENT</STRONG> + Routine detected an incorrect or out-of-range argu- + ment. + + <STRONG>E_SYSTEM_ERROR</STRONG> + System error occurred, e.g., malloc failure. + + The integer-valued routines return one of the following + codes on error: + + <STRONG>E_OK</STRONG> The routine succeeded. + + <STRONG>E_BAD_ARGUMENT</STRONG> + Routine detected an incorrect or out-of-range argu- + ment. + + <STRONG>E_CONNECTED</STRONG> + The field is already connected to a form. + + <STRONG>E_CURRENT</STRONG> + The field is the current field. + + <STRONG>E_SYSTEM_ERROR</STRONG> + System error occurred (see <STRONG>errno</STRONG>). + + +</PRE> +<H2>SEE ALSO</H2><PRE> + <STRONG><A HREF="ncurses.3x.html">curses(3x)</A></STRONG>, <STRONG><A HREF="form.3x.html">form(3x)</A></STRONG>. + + +</PRE> +<H2>NOTES</H2><PRE> + The header file <STRONG><form.h></STRONG> automatically includes the header + file <STRONG><curses.h></STRONG>. + + All of the <STRONG>(char</STRONG> <STRONG>*)</STRONG> arguments of these functions should + actually be <STRONG>(void</STRONG> <STRONG>*)</STRONG>. The type has been left uncorrected + for strict compatibility with System V. + + +</PRE> +<H2>PORTABILITY</H2><PRE> + These routines emulate the System V forms library. They + were not supported on Version 7 or BSD versions. + + +</PRE> +<H2>AUTHORS</H2><PRE> + Juergen Pfeifer. Manual pages and adaptation for new + curses by Eric S. Raymond. + + + + <STRONG><A HREF="form_fieldtype.3x.html">form_fieldtype(3x)</A></STRONG> +</PRE> +<HR> +<ADDRESS> +Man(1) output converted with +<a href="http://www.oac.uci.edu/indiv/ehood/man2html.html">man2html</a> +</ADDRESS> +</BODY> +</HTML> |