83 lines
4.6 KiB
HTML
83 lines
4.6 KiB
HTML
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<title>cwbOBJ_ReadResource</title>
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</head>
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<body id="cwbobj_readresource"><a name="cwbobj_readresource"><!-- --></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">cwbOBJ_ReadResource</span></h1>
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<div><div class="section"><h4 class="sectiontitle">Purpose</h4><p>Reads bytes from the current read location.</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 cwbOBJ_ReadResource(
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cwbOBJ_ObjHandle resourceHandle,
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char *bBuffer,
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unsigned long bytesToRead,
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unsigned long *bytesRead,
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cwbSV_ErrHandle errorHandle);</pre>
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</div>
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<div class="section"><h4 class="sectiontitle">Parameters</h4><dl><dt class="dlterm">cwbOBJ_ObjHandle resourceHandle - input</dt>
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<dd>Handle of the AFP™ resource object to be read from.</dd>
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<dt class="dlterm">char *buffer - input</dt>
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<dd>Pointer to buffer to hold the bytes read from the resource.</dd>
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<dt class="dlterm">unsigned long bytesToRead - input</dt>
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<dd>Maximum number of bytes to read. The number read may be less than this.</dd>
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<dt class="dlterm">unsigned long *bytesRead - output</dt>
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<dd>Number of bytes actually read.</dd>
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<dt class="dlterm">cwbSV_ErrHandle errorHandle - output</dt>
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<dd>Optional, may be 0. Any returned messages will be written to this object.
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It is created with the <span class="apiname">cwbSV_CreateErrHandle()</span> API. The
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messages may be retrieved through the <span class="apiname">cwbSV_GetErrText()</span> API.
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If the parameter is set to zero, no messages will be retrievable.</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_NO_ERROR</dt>
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<dd>Successful completion.</dd>
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<dt class="dlterm">CWB_NOT_ENOUGH_MEMORY</dt>
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<dd>Insufficient memory.</dd>
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<dt class="dlterm">CWB_INVALID_HANDLE</dt>
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<dd>Handle is not valid spooled file handle.</dd>
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<dt class="dlterm">CWBOBJ_RC_HOST_ERROR</dt>
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<dd>Host error occurred. Text may be in errorHandle.</dd>
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<dt class="dlterm">CWBOBJ_RC_RSCNOTOPEN</dt>
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<dd>Resource file has not been opened yet.</dd>
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<dt class="dlterm">CWBOBJ_RC_ENDOFFILE</dt>
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<dd>The end of file was read.</dd>
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</dl>
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</div>
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<div class="section"><h4 class="sectiontitle">Usage</h4><p>The <span class="apiname">cwbOBJ_OpenResource()</span> API
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must be called with this resource handle before this API is called OR the
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handle must be retrieved with a call to the <span class="apiname">cwbOBJ_OpenResourceForSplF()</span> API.
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If the end of file is reached when reading, the return code will be CWBOBJ_RC_ENDOFFILE
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and bytesRead will contain the actual number of bytes read.</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="rzaikobjapilist6.htm" title="The following iSeries Access for Windows APIs pertain to AFP resources. The APIs are listed alphabetically.">AFP resource APIs for iSeries Access for Windows</a></div>
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</body>
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