293 lines
8.2 KiB
HTML
293 lines
8.2 KiB
HTML
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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
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<html>
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
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<meta name="Copyright" content="Copyright (c) 2006 by IBM Corporation">
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<title>Read Immediate (QsnReadImm) API</title>
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<!-- Begin Header Records ========================================== -->
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<!-- All rights reserved. Licensed Materials Property of IBM -->
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<!-- US Government Users Restricted Rights -->
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<!-- Use, duplication or disclosure restricted by -->
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<!-- GSA ADP Schedule Contract with IBM Corp. -->
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<!-- DSMMST1 SCRIPT A converted by B2H R4.1 (346) (CMS) by V2KEA304 -->
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<!-- at RCHVMW2 on 29 Jan 1999 at 16:05:09 -->
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<!-- Change History: -->
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<!-- YYMMDD USERID Change description -->
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<!--File Edited October 2001 -->
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<!--End Header Records -->
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<link rel="stylesheet" type="text/css" href="../rzahg/ic.css">
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</head>
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<body>
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<a name="top_Of_Page"></a>
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<!-- Java sync-link -->
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<script language="Javascript" src="../rzahg/synch.js" type="text/javascript">
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</script>
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<h2>Read Immediate (QsnReadImm) API</h2>
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<div class="box" style="width: 70%;">
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<br>
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Omissible Parameter Group:<br>
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<br>
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<table width="100%">
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<tr>
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<td align="center" valign="top" width="10%">1</td>
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<td align="left" valign="top" width="50%">Number of field data bytes read</td>
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<td align="left" valign="top" width="20%">Output</td>
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<td align="left" valign="top" width="20%">Binary(4)</td>
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</tr>
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<tr>
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<td align="center" valign="top">2</td>
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<td align="left" valign="top">Input buffer handle</td>
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<td align="left" valign="top">Input</td>
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<td align="left" valign="top">Binary(4)</td>
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</tr>
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<tr>
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<td align="center" valign="top">3</td>
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<td align="left" valign="top">Command buffer handle</td>
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<td align="left" valign="top">Input</td>
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<td align="left" valign="top">Binary(4)</td>
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</tr>
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<tr>
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<td align="center" valign="top">4</td>
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<td align="left" valign="top">Low-level environment handle</td>
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<td align="left" valign="top">Input</td>
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<td align="left" valign="top">Binary(4)</td>
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</tr>
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<tr>
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<td align="center" valign="top">5</td>
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<td align="left" valign="top">Error code</td>
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<td align="left" valign="top">I/O</td>
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<td align="left" valign="top">Char(*)</td>
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</tr>
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</table>
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<br>
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Returned Value:<br>
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<br>
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<table width="100%">
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<tr>
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<td align="center" valign="top" width="10%"></td>
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<td align="left" valign="top" width="50%">Number of field data bytes read</td>
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<td align="left" valign="top" width="20%">Output</td>
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<td align="left" valign="top" width="20%">Binary(4)</td>
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</tr>
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</table>
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<br>
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Public Default Authority: *USE<br>
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<br>
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Service Program: QSNAPI<br>
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<!-- iddvc RMBR -->
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<br>
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Threadsafe: No<br>
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<!-- iddvc RMBR -->
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<br>
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</div>
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<p>The Read Immediate (QsnReadImm) API reads the contents of all input fields
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on the display without requiring an AID key to be pressed. The command buffer
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handle or input buffer handle parameter must be specified as described in <a
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href="QsnPutInpCmd.htm">Put Input Command (QsnPutInpCmd) API</a>.</p>
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<p>The information returned depends on the condition of the master MDT bit.
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(See <a href="dsm1e.htm#HDRMDT">Modified Data Tag (MDT) Bit</a>.) If the bit is
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not set, the input returned consists of the cursor address and an AID code
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only. If the bit is set, the input returned also includes the field data in the
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data portion of the input buffer. In each case, the returned cursor address
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indicates the current location of the cursor and an AID code of X'00'. The
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format of the field data returned is the same as that for the Read Input Fields
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(QsnReadInp) API.</p>
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<p>This command corresponds directly to the 5250 Read Immediate command.</p>
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<br>
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<h3>Authorities and Locks</h3>
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<p>None</p>
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<br>
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<h3>Restrictions</h3>
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<p>This command must be the last command in the command buffer. A CPFA305 error
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is issued if there is a subsequent attempt to add another command to the
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specified command buffer after this command.</p>
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<br>
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<h3>Omissible Parameter Group</h3>
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<dl>
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<dt><strong>Number of field data bytes read</strong></dt>
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<dd>OUTPUT; BINARY(4)
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<p>The variable that contains the number of field data bytes returned after the
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QsnReadImm API has completed if a direct operation is specified. The parameter
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is not modified for an indirect operation and the value remains unchanged from
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whatever was passed.</p>
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</dd>
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<dt><strong>Input buffer handle</strong></dt>
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<dd>INPUT; BINARY(4)
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<p>A handle for the input buffer that receives the result of the input
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operation if a direct operation is specified. The result can be queried using
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the input buffer query operations. See <a href="QsnRtvFldDta.htm">Retrieve
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Pointer to Field Data (QsnRtvFldDta) API</a> and <a href="QsnRtvFldDtaLen.htm">
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Retrieve Length of Field Data in Buffer (QsnRtvFldDtaLen) API</a>.</p>
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</dd>
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<dt><strong>Command buffer handle</strong></dt>
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<dd>INPUT; BINARY(4)
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<p>A handle for the command buffer in which to store the command.</p>
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</dd>
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<dt><strong>Low-level environment handle</strong></dt>
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<dd>INPUT; BINARY(4)
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<p>The low-level environment that the operation applies to. If this parameter
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is omitted or given with a value of zero, the default low-level environment is
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used.</p>
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</dd>
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<dt><strong>Error code</strong></dt>
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<dd>I/O; CHAR(*)
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<p>The structure in which to return error information. For the format of the
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structure, see <a href="../apiref/error.htm#hdrerrcod">Error Code Parameter</a>. If this
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parameter is omitted, diagnostic and escape messages are issued to the
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application.</p>
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</dd>
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</dl>
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<br>
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<h3>Returned Value</h3>
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<dl>
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<dt><strong>Number of field data bytes read</strong></dt>
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<dd>OUTPUT; BINARY(4)
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<p>This API returns the value for the number of field data bytes read parameter
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if a direct operation was specified, or -1 if an error occurs during
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processing. If this is an indirect operation, this API returns zero if
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successful, or -1 otherwise.</p>
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</dd>
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</dl>
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<br>
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<h3>Error Messages</h3>
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<table width="100%" cellpadding="3">
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<!-- cols="15 85" -->
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<tr>
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<th align="left" valign="top">Message ID</th>
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<th align="left" valign="top">Error Message Text</th>
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</tr>
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<tr>
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<td align="left" valign="top">CPF24B4 E</td>
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<td valign="top">Severe error while addressing parameter list.</td>
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</tr>
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<tr>
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<td align="left" valign="top">CPF3CF1 E</td>
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<td valign="top">Error code parameter not valid.</td>
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</tr>
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<tr>
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<td align="left" valign="top">CPF3CF2 E</td>
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<td valign="top">Error(s) occurred during running of &1 API.</td>
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</tr>
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<tr>
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<td align="left" valign="top">CPFA301 E</td>
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<td valign="top">Command buffer is full.</td>
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</tr>
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<tr>
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<td align="left" valign="top">CPFA302 E</td>
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<td valign="top">Command buffer or input buffer parameters required.</td>
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</tr>
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<tr>
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<td align="left" valign="top">CPFA304 E</td>
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<td valign="top">Data-stream error &1 reported for screen I/O
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operation.</td>
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</tr>
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<tr>
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<td align="left" valign="top">CPFA305 E</td>
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<td valign="top">Cannot add operation to command buffer.</td>
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</tr>
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<tr>
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<td align="left" valign="top">CPFA309 E</td>
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<td valign="top">Invalid cursor position in command buffer.</td>
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</tr>
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<tr>
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<td align="left" valign="top">CPFA313 E</td>
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<td valign="top">Command buffer already contains an input operation.</td>
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</tr>
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<tr>
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<td align="left" valign="top">CPFA331 E</td>
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<td valign="top">Buffer handle incorrect.</td>
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</tr>
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<tr>
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<td align="left" valign="top">CPFA334 E</td>
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<td valign="top">Low level environment handle incorrect.</td>
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</tr>
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<tr>
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<td align="left" valign="top">CPFA343 E</td>
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<td valign="top">Output operation not done.</td>
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</tr>
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<tr>
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<td align="left" valign="top">CPFA344 E</td>
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<td valign="top">The file &2 in library &3 is not valid.</td>
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</tr>
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<tr>
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<td align="left" valign="top">CPFA345 E</td>
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<td valign="top">The invite active flag is not valid.</td>
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</tr>
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</table>
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<br>
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<hr>
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API introduced: V2R3
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<hr>
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<center>
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<table cellpadding="2" cellspacing="2">
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<tr align="center">
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<td valign="middle" align="center"><a href="#Top_Of_Page">Top</a> | <a href=
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"dsm.htm">Dynamic Screen Manager APIs</a> | <a href="aplist.htm">APIs by
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category</a></td>
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</tr>
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</table>
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</center>
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</body>
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</html>
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