309 lines
8.3 KiB
HTML
309 lines
8.3 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>Read from Invited Device (QsnReadInvited) 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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<!-- 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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<!--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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<script language="Javascript" src="../rzahg/synch.js" type="text/javascript">
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</script>
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<h2>Read from Invited Device (QsnReadInvited) 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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</table>
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<br>
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Omissible 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%">2</td>
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<td align="left" valign="top" width="50%">Command 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">3</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">4</td>
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<td align="left" valign="top">Return code</td>
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<td align="left" valign="top">Output</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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<!-- 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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</div>
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<p>The Read from Invited Device (QsnReadInvited) API issues a read from invited
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device operation. Data will be returned in the format corresponding to the read
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command used.</p>
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<p>If the command buffer handle is specified and there is data to be sent in
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the command buffer, a QsnPutBuf will be issued to send the data to the screen.
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If no read command is in the command buffer, a read MDT command will be added
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to the data stream. Then the read from invited device will be issued.</p>
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<p>The input buffer handle parameter must be specified.</p>
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<p>See the appropriate read API for information on the format of the data
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returned.</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>The invite active flag must be on in the low level environment
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description.</p>
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<p>An error will be issued if the command buffer is empty, or not specified,
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and no other write has been done with the invite active flag on in the low
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level environment description.</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 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.</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>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 find the read command.</p>
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<p>If no read command is found in the specified command buffer, a read MDT with
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null control characters will be added to the data stream. This is the
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equivalent of calling the QsnReadMDT API.</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>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, -1 if there was a general failure,
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and -2 if the operation was a read from invited device which timed out.</p>
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<p>Check the WAITRCD parameter on the display file specified in the low level
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environment description, to determine the time out value.</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, -1 if there was a general failure,
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and -2 if the operation was a read from invited device which timed out.</p>
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<p>Check the WAITRCD parameter on the display file specified in the low level
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environment description, to determine the time out value.</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">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">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">CPFA326 E</td>
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<td valign="top">Screen must be redrawn.</td>
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</tr>
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<tr>
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<td align="left" valign="top">CPFA327 E</td>
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<td valign="top">Low level environment description value 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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<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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