ibm-information-center/dist/eclipse/plugins/i5OS.ic.apis_5.4.0.1/QsnRtvDtaLen.htm

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<title>Retrieve Length of Data in Input Buffer (QsnRtvDtaLen) API</title>
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<h2>Retrieve Length of Data in Input Buffer (QsnRtvDtaLen) API</h2>
<div class="box" style="width: 65%;">
<br>
&nbsp;&nbsp;Required Parameter Group:<br>
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<table width="100%">
<tr>
<td align="center" valign="top" width="10%">1</td>
<td align="left" valign="top" width="50%">Input buffer handle</td>
<td align="left" valign="top" width="20%">Input</td>
<td align="left" valign="top" width="20%">Binary(4)</td>
</tr>
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&nbsp;&nbsp;Omissible Parameter Group:<br>
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<br>
<table width="100%">
<tr>
<td align="center" valign="top" width="10%">2</td>
<td align="left" valign="top" width="50%">Input data length</td>
<td align="left" valign="top" width="20%">Output</td>
<td align="left" valign="top" width="20%">Binary(4)</td>
</tr>
<tr>
<td align="center" valign="top">3</td>
<td align="left" valign="top">Error code</td>
<td align="left" valign="top">I/O</td>
<td align="left" valign="top">Char(*)</td>
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&nbsp;&nbsp;Returned Value:<br>
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<tr>
<td align="center" valign="top" width="10%"></td>
<td align="left" valign="top" width="50%">Input data length</td>
<td align="left" valign="top" width="20%">Output</td>
<td align="left" valign="top" width="20%">Binary(4)</td>
</tr>
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&nbsp;&nbsp;Default Public Authority: *USE<br>
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&nbsp;&nbsp;Service Program: QSNAPI<br>
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&nbsp;&nbsp;Threadsafe: No<br>
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<p>The Retrieve Length of Data in Input Buffer (QsnRtvDtaLen) API determines
the number of bytes of input data contained in an input buffer after an input
operation.</p>
<br>
<h3>Authorities and Locks</h3>
<p>None</p>
<br>
<h3>Required Parameter</h3>
<dl>
<dt><strong>Input buffer handle</strong></dt>
<dd>INPUT; BINARY(4)
<p>A handle for the input buffer that contains the results of the input
operation.</p>
</dd>
</dl>
<br>
<h3>Omissible Parameter Group</h3>
<dl>
<dt><strong>Input data length</strong></dt>
<dd>OUTPUT; BINARY(4)
<p>The variable that contains the input data length when the QsnRtvDtaLen API
has completed. This number may be smaller than the number of bytes actually
read if the input buffer was not large enough to hold all the data. Use the
Retrieve Number of Bytes Read from Screen (QsnRtvReadLen) API to determine the
amount of data actually read from the screen. If the value returned by the
QsnRtvReadLen API is less than the input data length, then truncation of the
input data occurred.</p>
</dd>
</dl>
<br>
<h3>Returned Value</h3>
<dl>
<dt><strong>Input data length</strong></dt>
<dd>OUTPUT; BINARY(4)
<p>This API returns the value for the input data length parameter, or -1
otherwise.</p>
</dd>
</dl>
<br>
<h3>Error Messages</h3>
<table width="100%" cellpadding="3">
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<tr>
<th align="left" valign="top">Message ID</th>
<th align="left" valign="top">Error Message Text</th>
</tr>
<tr>
<td align="left" valign="top">CPF24B4 E</td>
<td valign="top">Severe error while addressing parameter list.</td>
</tr>
<tr>
<td align="left" valign="top">CPF3CF1 E</td>
<td valign="top">Error code parameter not valid.</td>
</tr>
<tr>
<td align="left" valign="top">CPF3CF2 E</td>
<td valign="top">Error(s) occurred during running of &amp;1 API.</td>
</tr>
<tr>
<td align="left" valign="top">CPFA319 E</td>
<td valign="top">No data in input buffer.</td>
</tr>
<tr>
<td align="left" valign="top">CPFA31E E</td>
<td valign="top">Required parameter &amp;1 omitted.</td>
</tr>
<tr>
<td align="left" valign="top">CPFA32F E</td>
<td valign="top">Buffer type incorrect.</td>
</tr>
<tr>
<td align="left" valign="top">CPFA331 E</td>
<td valign="top">Buffer handle incorrect.</td>
</tr>
<tr>
<td align="left" valign="top">CPFA334 E</td>
<td valign="top">Low level environment handle incorrect.</td>
</tr>
</table>
<br>
<hr>
API introduced: V2R3
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