398 lines
10 KiB
HTML
398 lines
10 KiB
HTML
<!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>Retrieve Field Information (QsnRtvFldInf) 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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<!-- 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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<!--File Edited October 2001 -->
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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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<script language="Javascript" src="../rzahg/synch.js" type="text/javascript">
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</script>
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<h2>Retrieve Field Information (QsnRtvFldInf) API</h2>
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<div class="box" style="width: 70%;">
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<br>
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Required Parameter Group:<br>
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<!-- iddvc RMBR -->
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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%">Input buffer handle</td>
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<td align="left" valign="top" width="20%">Input</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">Field number</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">Receiver variable</td>
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<td align="left" valign="top">Output</td>
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<td align="left" valign="top">Char(*)</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">Length of receiver variable</td>
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<td align="left" valign="top">Input</td>
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<td align="left" valign="top">Bin(4)</td>
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</tr>
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</table>
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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%">5</td>
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<td align="left" valign="top" width="50%">Low-level environment handle</td>
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<td align="left" valign="top" width="20%">Input</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">6</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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<!-- iddvc RMBR -->
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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%">Return code</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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Default Public Authority: *USE<br>
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<!-- iddvc RMBR -->
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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 Retrieve Field Information (QsnRtvFldInf) API retrieves information
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about a field in an input buffer filled by a Read Modified Fields (QsnReadMDT),
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Read Modified Alternate (QsnReadMDTAlt), or Read Modified Immediate Alternate
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(QsnReadMDTImmAlt) operation.</p>
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<p>To query the results from a Read Input Fields (QsnReadInp) or Read Immediate
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(QsnReadImm) operation, use the Retrieve Length of Field Data in Buffer
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(QsnRtvFldDtaLen) and Retrieve Pointer to Field Data (QsnRtvFldDta) APIs. To
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query the result from any other input operations, use the Retrieve Length of
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Data in Input Buffer (QsnRtvDtaLen) and Retrieve Pointer to Data in Input
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Buffer (QsnRtvDta) APIs.</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>Required Parameter Group</h3>
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<dl>
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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 contains the results of the input
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operation.</p>
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</dd>
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<dt><strong>Field number</strong></dt>
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<dd>INPUT; BINARY(4)
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<p>The number of the field to query, specified as n, where n is the nth field
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in the input buffer. The value specified must not be greater than the field
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count returned by the read operation.</p>
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</dd>
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<dt><strong>Receiver variable</strong></dt>
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<dd>Output; CHAR(*)
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<p>The structure that will contain the result of the query when the
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QsnRtvFldInf API has completed.</p>
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</dd>
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<dt><strong>Length of receiver variable</strong></dt>
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<dd>Input; BINARY(4)
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<p>The length of the receiver variable parameter.</p>
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</dd>
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</dl>
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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>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>Return code</strong></dt>
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<dd>OUTPUT; BINARY(4)
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<p>A return code indicating the result of the operation. The value returned
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will be 0 if the operation was 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><a name="HDRINFLDQF">Format of the Query Input Field Result</a></h3>
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<table border width="80%">
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<tr>
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<th align="center" valign="bottom" colspan="2">Offset</th>
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<th align="left" valign="bottom" rowspan="2">Type</th>
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<th align="left" valign="bottom" rowspan="2">Field</th>
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</tr>
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<tr>
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<th align="center" valign="bottom">Dec</th>
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<th align="center" valign="bottom">Hex</th>
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</tr>
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<tr>
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<td align="center" valign="top" width="10%">0</td>
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<td align="center" valign="top" width="10%">0</td>
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<td align="left" valign="top" width="20%">BINARY(4)</td>
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<td align="left" valign="top" width="40%">Bytes returned</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="center" valign="top">4</td>
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<td align="left" valign="top">BINARY(4)</td>
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<td align="left" valign="top">Bytes available</td>
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</tr>
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<tr>
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<td align="center" valign="top">8</td>
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<td align="center" valign="top">8</td>
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<td align="left" valign="top">CHAR(1)</td>
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<td align="left" valign="top">Type of field</td>
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</tr>
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<tr>
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<td align="center" valign="top">9</td>
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<td align="center" valign="top">9</td>
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<td align="left" valign="top">BINARY(4)</td>
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<td align="left" valign="top">Row position of field</td>
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</tr>
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<tr>
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<td align="center" valign="top">13</td>
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<td align="center" valign="top">D</td>
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<td align="left" valign="top">BINARY(4)</td>
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<td align="left" valign="top">Column position of field</td>
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</tr>
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<tr>
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<td align="center" valign="top">17</td>
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<td align="center" valign="top">11</td>
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<td align="left" valign="top">BINARY(4)</td>
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<td align="left" valign="top">Length of data read</td>
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</tr>
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<tr>
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<td align="center" valign="top">21</td>
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<td align="center" valign="top">15</td>
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<td align="left" valign="top">CHAR(11)</td>
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<td align="left" valign="top">Reserved</td>
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</tr>
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<tr>
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<td align="center" valign="top">32</td>
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<td align="center" valign="top">20</td>
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<td align="left" valign="top">PTR(SPP)</td>
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<td align="left" valign="top">Pointer to field data</td>
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</tr>
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</table>
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<br>
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<br>
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<h3><a name="Header_233">Field Descriptions</a></h3>
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<p><strong>Bytes available.</strong> The number of bytes of data available to
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be returned. All available data is returned if enough space is provided.</p>
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<p><strong>Bytes returned.</strong> The number of bytes of data returned.</p>
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<p><strong>Column position of field.</strong> The column position relative to
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the window of the specified field on the screen.</p>
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<p><strong>Length of data read.</strong> The length of the data read from the
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specified field.</p>
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<p><strong>Pointer to field data.</strong> A pointer to the data for the
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specified field.</p>
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<p><strong>Row position of field.</strong> The row position relative to the
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window of the specified field on the screen.</p>
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<p><strong>Type of field.</strong> The type of the specified field. The
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possible values are:</p>
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<table cellpadding="3">
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<!-- cols="15 85" -->
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<tr>
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<th align="left" valign="top">Value</th>
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<th align="left" valign="top">Description</th>
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</tr>
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<tr>
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<td align="left" valign="top"><em>1</em></td>
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<td valign="top">Normal field</td>
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</tr>
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<tr>
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<td align="left" valign="top"><em>2</em></td>
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<td valign="top">Transparent field</td>
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</tr>
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</table>
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<br>
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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">CPF3C24 E</td>
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<td valign="top">Length of the receiver variable is not valid.</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">CPFA319 E</td>
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<td valign="top">No data in input buffer.</td>
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</tr>
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<tr>
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<td align="left" valign="top">CPFA31A E</td>
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<td valign="top">Incorrect field number value &1 specified.</td>
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</tr>
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<tr>
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<td align="left" valign="top">CPFA31E E</td>
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<td valign="top">Required parameter &1 omitted.</td>
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</tr>
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<tr>
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<td align="left" valign="top">CPFA32E E</td>
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<td valign="top">Input data for query operation incorrect.</td>
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</tr>
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<tr>
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<td align="left" valign="top">CPFA32F E</td>
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<td valign="top">Buffer type incorrect.</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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</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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