71 lines
3.6 KiB
HTML
71 lines
3.6 KiB
HTML
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<meta name="DC.Title" content="cwbDQ_SetDataAddr" />
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<title>cwbDQ_SetDataAddr</title>
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</head>
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<body id="cwbdq_setdataaddr"><a name="cwbdq_setdataaddr"><!-- --></a>
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<!-- Java sync-link --><script language="Javascript" src="../rzahg/synch.js" type="text/javascript"></script>
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<h1 class="topictitle1"><span class="apiname">cwbDQ_SetDataAddr</span></h1>
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<div><div class="section"><h4 class="sectiontitle">Purpose</h4><p>Set the data and data length attributes
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of the data object. The default is to have no data with zero length. This
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function will not copy the data.</p>
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</div>
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<div class="section"><h4 class="sectiontitle">Syntax</h4><pre>
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unsigned int CWB_ENTRY cwbDQ_SetDataAddr(
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cwbDQ_Data data,
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unsigned char *dataBuffer,
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unsigned long dataLength);</pre>
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</div>
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<div class="section"><h4 class="sectiontitle">Parameters</h4><dl><dt class="dlterm">cwbDQ_Data data - input</dt>
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<dd>Handle of the data object that was returned by a previous call to <span class="apiname">cwbDQ_CreateData</span>.</dd>
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<dt class="dlterm">unsigned char * dataBuffer - input</dt>
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<dd>Pointer to the data. The data may contain embedded NULLS, so it is not
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an ASCIIZ string.</dd>
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<dt class="dlterm">unsigned long dataLength - input</dt>
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<dd>Length of the data in bytes.</dd>
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</dl>
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</div>
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<div class="section"><h4 class="sectiontitle">Return Codes</h4><p>The following list shows common return
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values.</p>
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<dl><dt class="dlterm">CWB_OK</dt>
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<dd>Successful completion.</dd>
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<dt class="dlterm">CWB_INVALID_POINTER</dt>
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<dd>Bad or null pointer.</dd>
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<dt class="dlterm">CWBDQ_INVALID_DATA_HANDLE</dt>
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<dd>Invalid data handle.</dd>
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<dt class="dlterm">CWBDQ_BAD_DATA_LENGTH</dt>
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<dd>Length of data is not correct.</dd>
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</dl>
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</div>
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<div class="section"><h4 class="sectiontitle">Usage</h4><p>This function is better for large
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amounts of data, or if you want to manage memory in your application. Data
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will not be copied so performance will be improved.</p>
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</div>
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</div>
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<div>
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<div class="familylinks">
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<div class="parentlink"><strong>Parent topic:</strong> <a href="rzaikdqapilist4.htm" title="Use these APIs for writing to and reading from a data queue">Data Queues: Read and write APIs</a></div>
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</div>
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</div>
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</body>
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