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

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<title>Retrieve Number of Rows to Roll Scroller (QsnRtvSclNumRoll) API</title>
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<h2>Retrieve Number of Rows to Roll Scroller (QsnRtvSclNumRoll) API</h2>
<div class="box" style="width: 60%;">
<br>
&nbsp;&nbsp;Required Parameter:<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%">Session handle</td>
<td align="left" valign="top" width="20%">Input</td>
<td align="left" valign="top" width="20%">Binary(4)</td>
</tr>
</table>
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&nbsp;&nbsp;Omissible Parameter Group:<br>
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<table width="100%">
<tr>
<td align="center" valign="top" width="10%">2</td>
<td align="left" valign="top" width="50%">Roll amount</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>
</tr>
</table>
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&nbsp;&nbsp;Returned Value:<br>
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<table width="100%">
<tr>
<td align="center" valign="top" width="10%"></td>
<td align="left" valign="top" width="50%">Roll amount</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 Number of Rows to Roll Scroller (QsnRtvSclNumRoll) API returns
the default number of rows to roll the scroller by for the Roll Scroller Up
(QsnRollSclUp) and Roll Scroller Down (QsnRollSclDown) APIs. The default number
of rows is specified on the session description. See <a href="QsnCrtSsn.htm">
Create a Session (QsnCrtSsn) API</a> and <a href="QsnChgSsn.htm">Change Session
(QsnChgSsn) API</a> for details.</p>
<br>
<h3>Authorities and Locks</h3>
<p>None</p>
<br>
<h3>Required Parameter</h3>
<dl>
<dt><strong>Session handle</strong></dt>
<dd>INPUT; BINARY(4)
<p>A handle for the session to be queried.</p>
</dd>
</dl>
<br>
<h3>Omissible Parameter Group</h3>
<dl>
<dt><strong>Roll amount</strong></dt>
<dd>OUTPUT; BINARY(4)
<p>The variable that contains the number of scroller rows to roll by when the
QsnRtvSclNumRoll API has completed.</p>
</dd>
<dt><strong>Error code</strong></dt>
<dd>I/O; CHAR(*)
<p>The structure in which to return error information. For the format of the
structure, see <a href="../apiref/error.htm#hdrerrcod">Error Code Parameter</a>. If this
parameter is omitted, diagnostic and escape messages are issued to the
application.</p>
</dd>
</dl>
<br>
<h3>Returned Value</h3>
<dl>
<dt><strong>Roll amount</strong></dt>
<dd>OUTPUT; BINARY(4)
<p>This API returns the value for the roll amount parameter if the operation
was successful, or -1 otherwise.</p>
</dd>
</dl>
<br>
<h3>Error Messages</h3>
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<th align="left" valign="top">Message ID</th>
<th align="left" valign="top">Error Message Text</th>
</tr>
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<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>
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<td align="left" valign="top">CPF3CF2 E</td>
<td valign="top">Error(s) occurred during running of &amp;1 API.</td>
</tr>
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<td align="left" valign="top">CPFA31E E</td>
<td valign="top">Required parameter &amp;1 omitted.</td>
</tr>
<tr>
<td align="left" valign="top">CPFA3D6 E</td>
<td valign="top">Session handle is incorrect.</td>
</tr>
</table>
<br>
<hr>
API introduced: V2R3
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