2002-10-13 11:35:53 +08:00
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<!--
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****************************************************************************
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2010-05-30 09:08:46 +08:00
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* Copyright (c) 1998-2008,2010 Free Software Foundation, Inc. *
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2002-10-13 11:35:53 +08:00
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* *
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* Permission is hereby granted, free of charge, to any person obtaining a *
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* copy of this software and associated documentation files (the *
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* "Software"), to deal in the Software without restriction, including *
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* without limitation the rights to use, copy, modify, merge, publish, *
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* furnished to do so, subject to the following conditions: *
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* *
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* The above copyright notice and this permission notice shall be included *
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* in all copies or substantial portions of the Software. *
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* *
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS *
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF *
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. *
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* IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, *
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* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR *
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* *
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* Except as contained in this notice, the name(s) of the above copyright *
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* holders shall not be used in advertising or otherwise to promote the *
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* sale, use or other dealings in this Software without prior written *
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* authorization. *
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****************************************************************************
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2011-01-09 09:17:12 +08:00
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* @Id: form_driver.3x,v 1.22 2010/12/04 18:38:55 tom Exp @
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-->
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2015-02-15 09:42:27 +08:00
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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01//EN">
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1997-05-15 12:00:00 +08:00
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<HTML>
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<HEAD>
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<meta http-equiv="Content-Type" content="text/html; charset=us-ascii">
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<meta name="generator" content="Manpage converted by man2html - see http://invisible-island.net/scripts/readme.html#others_scripts">
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2002-10-13 11:35:53 +08:00
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<TITLE>form_driver 3x</TITLE>
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<link rev=made href="mailto:bug-ncurses@gnu.org">
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<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
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</HEAD>
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1999-10-24 12:32:42 +08:00
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<BODY>
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2015-05-17 05:01:22 +08:00
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<H1 class="no-header">form_driver 3x</H1>
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1997-05-15 12:00:00 +08:00
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<PRE>
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2005-10-10 02:41:57 +08:00
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<STRONG><A HREF="form_driver.3x.html">form_driver(3x)</A></STRONG> <STRONG><A HREF="form_driver.3x.html">form_driver(3x)</A></STRONG>
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2004-02-09 10:15:26 +08:00
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2000-07-09 10:46:08 +08:00
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</PRE>
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<H2><a name="h2-NAME">NAME</a></H2><PRE>
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<STRONG>form_driver</STRONG> - command-processing loop of the form system
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</PRE>
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2015-02-15 09:42:27 +08:00
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<H2><a name="h2-SYNOPSIS">SYNOPSIS</a></H2><PRE>
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<STRONG>#include</STRONG> <STRONG><form.h></STRONG>
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int form_driver(FORM *form, int c);
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</PRE>
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<H2><a name="h2-DESCRIPTION">DESCRIPTION</a></H2><PRE>
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1997-05-15 12:00:00 +08:00
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Once a form has been posted (displayed), you should funnel
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input events to it through <STRONG>form_driver</STRONG>. This routine has
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2008-06-22 08:16:39 +08:00
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three major input cases:
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2010-09-19 08:45:46 +08:00
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<STRONG>o</STRONG> The input is a form navigation request. Navigation
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request codes are constants defined in <STRONG><form.h></STRONG>, which
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are distinct from the key- and character codes
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returned by <STRONG>wgetch</STRONG>.
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<STRONG>o</STRONG> The input is a printable character. Printable charac-
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ters (which must be positive, less than 256) are
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checked according to the program's locale settings.
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2010-09-19 08:45:46 +08:00
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<STRONG>o</STRONG> The input is the KEY_MOUSE special key associated with
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an mouse event.
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2008-06-22 08:16:39 +08:00
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The form driver requests are as follows:
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REQ_NEXT_PAGE
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Move to the next page.
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REQ_PREV_PAGE
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Move to the previous page.
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REQ_FIRST_PAGE
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Move to the first page.
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REQ_LAST_PAGE
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Move to the last field.
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REQ_NEXT_FIELD
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Move to the next field.
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REQ_PREV_FIELD
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Move to the previous field.
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REQ_FIRST_FIELD
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Move to the first field.
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REQ_LAST_FIELD
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Move to the last field.
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REQ_SNEXT_FIELD
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Move to the sorted next field.
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REQ_SPREV_FIELD
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Move to the sorted previous field.
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REQ_SFIRST_FIELD
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Move to the sorted first field.
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REQ_SLAST_FIELD
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Move to the sorted last field.
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REQ_LEFT_FIELD
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Move left to a field.
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REQ_RIGHT_FIELD
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Move right to a field.
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REQ_UP_FIELD
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Move up to a field.
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REQ_DOWN_FIELD
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Move down to a field.
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REQ_NEXT_CHAR
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Move to the next char.
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REQ_PREV_CHAR
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Move to the previous char.
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REQ_NEXT_LINE
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Move to the next line.
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REQ_PREV_LINE
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Move to the previous line.
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REQ_NEXT_WORD
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Move to the next word.
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REQ_PREV_WORD
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Move to the previous word.
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REQ_BEG_FIELD
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Move to the beginning of the field.
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REQ_END_FIELD
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Move to the end of the field.
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REQ_BEG_LINE
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Move to the beginning of the line.
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REQ_END_LINE
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Move to the end of the line.
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REQ_LEFT_CHAR
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Move left in the field.
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REQ_RIGHT_CHAR
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Move right in the field.
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REQ_UP_CHAR
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Move up in the field.
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REQ_DOWN_CHAR
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Move down in the field.
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2000-07-09 10:46:08 +08:00
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REQ_NEW_LINE
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Insert or overlay a new line.
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REQ_INS_CHAR
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Insert a blank at the cursor.
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REQ_INS_LINE
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Insert a blank line at the cursor.
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REQ_DEL_CHAR
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Delete character at the cursor.
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REQ_DEL_PREV
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Delete character before the cursor.
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REQ_DEL_LINE
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Delete line at the cursor.
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REQ_DEL_WORD
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Delete blank-delimited word at the cursor.
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REQ_CLR_EOL
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Clear to end of line from cursor.
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REQ_CLR_EOF
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Clear to end of field from cursor.
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REQ_CLR_FIELD
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Clear the entire field.
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REQ_OVL_MODE
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Enter overlay mode.
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REQ_INS_MODE
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Enter insert mode.
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REQ_SCR_FLINE
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Scroll the field forward a line.
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REQ_SCR_BLINE
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Scroll the field backward a line.
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REQ_SCR_FPAGE
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Scroll the field forward a page.
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REQ_SCR_BPAGE
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Scroll the field backward a page.
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REQ_SCR_FHPAGE
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Scroll the field forward half a page.
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REQ_SCR_BHPAGE
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2000-07-09 10:46:08 +08:00
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Scroll the field backward half a page.
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2004-02-09 10:15:26 +08:00
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2000-07-09 10:46:08 +08:00
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REQ_SCR_FCHAR
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1997-05-15 12:00:00 +08:00
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Scroll the field forward a character.
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REQ_SCR_BCHAR
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Scroll the field backward a character.
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REQ_SCR_HFLINE
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Horizontal scroll the field forward a line.
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REQ_SCR_HBLINE
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Horizontal scroll the field backward a line.
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REQ_SCR_HFHALF
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Horizontal scroll the field forward half a line.
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REQ_SCR_HBHALF
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Horizontal scroll the field backward half a line.
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REQ_VALIDATION
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Validate field.
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REQ_NEXT_CHOICE
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Display next field choice.
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REQ_PREV_CHOICE
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Display previous field choice.
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2008-06-22 08:16:39 +08:00
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If the second argument is a printable character, the
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1997-05-15 12:00:00 +08:00
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driver places it in the current position in the current
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field. If it is one of the forms requests listed above,
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that request is executed.
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2015-02-15 09:42:27 +08:00
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</PRE>
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<H3><a name="h3-MOUSE-HANDLING">MOUSE HANDLING</a></H3><PRE>
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2008-06-22 08:16:39 +08:00
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If the second argument is the KEY_MOUSE special key, the
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associated mouse event is translated into one of the above
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pre-defined requests. Currently only clicks in the user
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2010-05-30 09:08:46 +08:00
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window (e.g., inside the form display area or the decora-
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2008-06-22 08:16:39 +08:00
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tion window) are handled.
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If you click above the display region of the form:
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2010-09-19 08:45:46 +08:00
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a REQ_PREV_FIELD is generated for a single click,
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2008-06-22 08:16:39 +08:00
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2010-09-19 08:45:46 +08:00
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a REQ_PREV_PAGE is generated for a double-click and
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2008-06-22 08:16:39 +08:00
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2010-09-19 08:45:46 +08:00
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a REQ_FIRST_FIELD is generated for a triple-click.
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2008-06-22 08:16:39 +08:00
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If you click below the display region of the form:
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2010-09-19 08:45:46 +08:00
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a REQ_NEXT_FIELD is generated for a single click,
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2008-06-22 08:16:39 +08:00
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2010-09-19 08:45:46 +08:00
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a REQ_NEXT_PAGE is generated for a double-click and
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2008-06-22 08:16:39 +08:00
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2010-09-19 08:45:46 +08:00
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a REQ_LAST_FIELD is generated for a triple-click.
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2008-06-22 08:16:39 +08:00
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If you click at an field inside the display area of the
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form:
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2010-09-19 08:45:46 +08:00
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<STRONG>o</STRONG> the form cursor is positioned to that field.
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2008-06-22 08:16:39 +08:00
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2010-09-19 08:45:46 +08:00
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<STRONG>o</STRONG> If you double-click a field, the form cursor is
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positioned to that field and <STRONG>E_UNKNOWN_COMMAND</STRONG> is
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returned. This return value makes sense, because a
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double click usually means that an field-specific
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action should be returned. It is exactly the pur-
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pose of this return value to signal that an appli-
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cation specific command should be executed.
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2008-06-22 08:16:39 +08:00
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2010-09-19 08:45:46 +08:00
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<STRONG>o</STRONG> If a translation into a request was done,
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<STRONG>form_driver</STRONG> returns the result of this request.
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2008-06-22 08:16:39 +08:00
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2010-09-19 08:45:46 +08:00
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If you clicked outside the user window or the mouse event
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could not be translated into a form request an
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2008-06-22 08:16:39 +08:00
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<STRONG>E_REQUEST_DENIED</STRONG> is returned.
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2015-02-15 09:42:27 +08:00
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</PRE>
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<H3><a name="h3-APPLICATION-DEFINED-COMMANDS">APPLICATION-DEFINED COMMANDS</a></H3><PRE>
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2008-06-22 08:16:39 +08:00
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If the second argument is neither printable nor one of the
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2010-09-19 08:45:46 +08:00
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above pre-defined form requests, the driver assumes it is
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2008-06-22 08:16:39 +08:00
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an application-specific command and returns <STRONG>E_UNKNOWN_COM-</STRONG>
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<STRONG>MAND</STRONG>. Application-defined commands should be defined rel-
|
2010-09-19 08:45:46 +08:00
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ative to <STRONG>MAX_COMMAND</STRONG>, the maximum value of these pre-
|
2008-06-22 08:16:39 +08:00
|
|
|
defined requests.
|
1997-05-15 12:00:00 +08:00
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|
</PRE>
|
2015-02-15 09:42:27 +08:00
|
|
|
<H2><a name="h2-RETURN-VALUE">RETURN VALUE</a></H2><PRE>
|
2006-12-18 12:32:42 +08:00
|
|
|
<STRONG>form_driver</STRONG> returns one of the following error codes:
|
1997-05-15 12:00:00 +08:00
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|
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|
2002-10-13 11:35:53 +08:00
|
|
|
<STRONG>E_OK</STRONG> The routine succeeded.
|
1997-05-15 12:00:00 +08:00
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|
2002-10-13 11:35:53 +08:00
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|
<STRONG>E_BAD_ARGUMENT</STRONG>
|
2010-09-19 08:45:46 +08:00
|
|
|
Routine detected an incorrect or out-of-range argu-
|
1997-05-15 12:00:00 +08:00
|
|
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ment.
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|
2002-10-13 11:35:53 +08:00
|
|
|
<STRONG>E_BAD_STATE</STRONG>
|
2004-02-09 10:15:26 +08:00
|
|
|
Routine was called from an initialization or termina-
|
|
|
|
|
tion function.
|
1997-05-15 12:00:00 +08:00
|
|
|
|
2002-10-13 11:35:53 +08:00
|
|
|
<STRONG>E_NOT_POSTED</STRONG>
|
1997-05-15 12:00:00 +08:00
|
|
|
The form has not been posted.
|
|
|
|
|
|
2002-10-13 11:35:53 +08:00
|
|
|
<STRONG>E_INVALID_FIELD</STRONG>
|
1997-05-15 12:00:00 +08:00
|
|
|
Contents of field is invalid.
|
|
|
|
|
|
2002-10-13 11:35:53 +08:00
|
|
|
<STRONG>E_REQUEST_DENIED</STRONG>
|
1997-05-15 12:00:00 +08:00
|
|
|
The form driver could not process the request.
|
|
|
|
|
|
2006-12-18 12:32:42 +08:00
|
|
|
<STRONG>E_SYSTEM_ERROR</STRONG>
|
|
|
|
|
System error occurred (see <STRONG>errno</STRONG>).
|
|
|
|
|
|
|
|
|
|
<STRONG>E_UNKNOWN_COMMAND</STRONG>
|
|
|
|
|
The form driver code saw an unknown request code.
|
|
|
|
|
|
1997-05-15 12:00:00 +08:00
|
|
|
|
|
|
|
|
</PRE>
|
2015-02-15 09:42:27 +08:00
|
|
|
<H2><a name="h2-SEE-ALSO">SEE ALSO</a></H2><PRE>
|
2013-12-22 07:12:46 +08:00
|
|
|
<STRONG><A HREF="ncurses.3x.html">curses(3x)</A></STRONG>, <STRONG><A HREF="form.3x.html">form(3x)</A></STRONG>, <STRONG><A HREF="form_variables.3x.html">form_variables(3x)</A></STRONG>, <STRONG><A HREF="curs_getch.3x.html">curs_getch(3x)</A></STRONG>.
|
1997-05-15 12:00:00 +08:00
|
|
|
|
|
|
|
|
|
|
|
|
|
</PRE>
|
2015-02-15 09:42:27 +08:00
|
|
|
<H2><a name="h2-NOTES">NOTES</a></H2><PRE>
|
2002-10-13 11:35:53 +08:00
|
|
|
The header file <STRONG><form.h></STRONG> automatically includes the header
|
|
|
|
|
files <STRONG><curses.h></STRONG>.
|
1997-05-15 12:00:00 +08:00
|
|
|
|
|
|
|
|
|
|
|
|
|
</PRE>
|
2015-02-15 09:42:27 +08:00
|
|
|
<H2><a name="h2-PORTABILITY">PORTABILITY</a></H2><PRE>
|
2010-09-19 08:45:46 +08:00
|
|
|
These routines emulate the System V forms library. They
|
1997-05-15 12:00:00 +08:00
|
|
|
were not supported on Version 7 or BSD versions.
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
</PRE>
|
2015-02-15 09:42:27 +08:00
|
|
|
<H2><a name="h2-AUTHORS">AUTHORS</a></H2><PRE>
|
2010-09-19 08:45:46 +08:00
|
|
|
Juergen Pfeifer. Manual pages and adaptation for new
|
1997-05-15 12:00:00 +08:00
|
|
|
curses by Eric S. Raymond.
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2005-10-10 02:41:57 +08:00
|
|
|
<STRONG><A HREF="form_driver.3x.html">form_driver(3x)</A></STRONG>
|
1997-05-15 12:00:00 +08:00
|
|
|
</PRE>
|
2015-02-15 09:42:27 +08:00
|
|
|
<div class="nav">
|
|
|
|
|
<ul>
|
|
|
|
|
<li><a href="#h2-NAME">NAME</a></li>
|
|
|
|
|
<li><a href="#h2-SYNOPSIS">SYNOPSIS</a></li>
|
|
|
|
|
<li><a href="#h2-DESCRIPTION">DESCRIPTION</a>
|
|
|
|
|
<ul>
|
|
|
|
|
<li><a href="#h3-MOUSE-HANDLING">MOUSE HANDLING</a></li>
|
|
|
|
|
<li><a href="#h3-APPLICATION-DEFINED-COMMANDS">APPLICATION-DEFINED COMMANDS</a></li>
|
|
|
|
|
</ul>
|
|
|
|
|
</li>
|
|
|
|
|
<li><a href="#h2-RETURN-VALUE">RETURN VALUE</a></li>
|
|
|
|
|
<li><a href="#h2-SEE-ALSO">SEE ALSO</a></li>
|
|
|
|
|
<li><a href="#h2-NOTES">NOTES</a></li>
|
|
|
|
|
<li><a href="#h2-PORTABILITY">PORTABILITY</a></li>
|
|
|
|
|
<li><a href="#h2-AUTHORS">AUTHORS</a></li>
|
|
|
|
|
</ul>
|
|
|
|
|
</div>
|
1997-05-15 12:00:00 +08:00
|
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|
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