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

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<title>Retrieve Window Description (QsnRtvWinD) API</title>
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<h2>Retrieve Window Description (QsnRtvWinD) API</h2>
<div class="box" style="width: 65%;">
<br>
&nbsp;&nbsp;Required Parameter Group:<br>
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<br>
<table width="100%">
<tr>
<td align="center" valign="top" width="10%">1</td>
<td align="left" valign="top" width="50%">Window handle</td>
<td align="left" valign="top" width="20%">Input</td>
<td align="left" valign="top" width="20%">Binary(4)</td>
</tr>
<tr>
<td align="center" valign="top">2</td>
<td align="left" valign="top">Window description</td>
<td align="left" valign="top">Output</td>
<td align="left" valign="top">Char(*)</td>
</tr>
<tr>
<td align="center" valign="top">3</td>
<td align="left" valign="top">Length of window description</td>
<td align="left" valign="top">Input</td>
<td align="left" valign="top">Binary(4)</td>
</tr>
</table>
<br>
&nbsp;&nbsp;Omissible Parameter:<br>
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<br>
<table width="100%">
<tr>
<td align="center" valign="top" width="10%">4</td>
<td align="left" valign="top" width="50%">Error code</td>
<td align="left" valign="top" width="20%">I/O</td>
<td align="left" valign="top" width="20%">Char(*)</td>
</tr>
</table>
<br>
&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%">Return code</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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</div>
<p>The Retrieve Window Description (QsnRtvWinD) API retrieves a copy of the
window description for the given window.</p>
<br>
<h3>Authorities and Locks</h3>
<p>None</p>
<br>
<h3>Required Parameter Group</h3>
<dl>
<dt><strong>Window handle</strong></dt>
<dd>INPUT; BINARY(4)
<p>A handle for the window for which the window description should be
returned.</p>
</dd>
<dt><strong>Window description</strong></dt>
<dd>OUTPUT; CHAR(*)
<p>The window description for the given window. The format of the data returned
is shown in <a href="#HDRWNRDESC">Format of the Window Description
Returned</a>.</p>
</dd>
<dt><strong>Length of window description</strong></dt>
<dd>INPUT; BINARY(4)
<p>The length of the window description parameter. If the length is larger than
the size of the receiver variable, the results are not predictable. The minimum
length is 8. The API returns as much information as it can fit in this length.
If the available information is longer, it is truncated. If the available
information is shorter, the unused output is unchanged; whatever is already
stored in that space remains there. To determine how much information the API
actually returns in response to this call, see the bytes returned field. To
determine how much information the API could return if space were available,
see the bytes available field.</p>
</dd>
</dl>
<br>
<h3>Omissible Parameter</h3>
<dl>
<dt><strong>Error code</strong></dt>
<dd>I/O; CHAR(*)
<p>Thestructure 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>Return code</strong></dt>
<dd>OUTPUT; BINARY(4)
<p>A return code indicating the result of the operation. The value returned
will be 0 if the operation was successful, or -1 otherwise.</p>
</dd>
</dl>
<br>
<h3><a name="HDRWNRDESC">Format of the Window Description Returned</a></h3>
<table border width="80%">
<tr>
<th align="center" valign="bottom" colspan="2">Offset</th>
<th align="left" valign="bottom" rowspan="2">Type</th>
<th align="left" valign="bottom" rowspan="2">Field</th>
</tr>
<tr>
<th align="center" valign="bottom">Dec</th>
<th align="center" valign="bottom">Hex</th>
</tr>
<tr>
<td align="center" valign="top" width="10%">0</td>
<td align="center" valign="top" width="10%">0</td>
<td align="left" valign="top" width="20%">BINARY(4)</td>
<td align="left" valign="top" width="60%">Bytes returned</td>
</tr>
<tr>
<td align="center" valign="top">4</td>
<td align="center" valign="top">4</td>
<td align="left" valign="top">BINARY(4)</td>
<td align="left" valign="top">Bytes available</td>
</tr>
<tr>
<td align="center" valign="top">8</td>
<td align="center" valign="top">8</td>
<td align="left" valign="top">CHAR(*)</td>
<td align="left" valign="top">Window description</td>
</tr>
</table>
<br>
<br>
<h3>Field Descriptions</h3>
<p><strong>Bytes available.</strong> The number of bytes of data available to
be returned. All available data is returned if enough space is provided.</p>
<p><strong>Bytes returned.</strong> The number of bytes of data returned.</p>
<p><strong>Window description.</strong> The format of the remaining data
returned is shown in <a href="QsnCrtWin.htm#HDRWNDESC">Format of the Window
Description</a>.</p>
<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">CPF3C24 E</td>
<td valign="top">Length of the receiver variable is not valid.</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">CPFA31E E</td>
<td valign="top">Required parameter &amp;1 omitted.</td>
</tr>
<tr>
<td align="left" valign="top">CPFA3AA E</td>
<td valign="top">Window handle incorrect.</td>
</tr>
</table>
<br>
<hr>
API introduced: V2R3
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