<div class="content" name="RenameCalendar" uuid="b8078744-6cdf-42c2-b1ad-32c859d4513e"><p>The RenameCalendar method renames a specified calendar
event.</p><dl>
<dd>
<div><pre> [id(5), helpstring(&#34;method RenameCalendar&#34;)] HRESULT RenameCalendar(
   [in] BSTR bstrOldCalendarName,
   [in] BSTR bstrNewCalendarName
 );
</pre></div>
</dd></dl><p><b>bstrOldCalendarName: </b>A string that specifies
the current name of the calendar event to be renamed.</p><dl>
<dd>
<p>If this parameter is NULL, <b>E_INVALIDARG</b> MUST
be returned.</p>
</dd></dl><p><b>bstrNewCalendarName: </b>A string that specifies
the new name of the calendar event.</p><p><b>Return Values: </b>This method returns 0x00000000
for success or a negative <a href="e371cc74-bf4c-4870-8afe-5062cc628b4f#gt_799103ab-b3cb-4eab-8c55-322821b2b235" data-linktype="relative-path">HRESULT</a>
value (in the following table or in <a href="../ms-erref/1bc92ddf-b79e-413c-bbaa-99a5281a6c90" data-linktype="relative-path">[MS-ERREF]</a>
section <a href="../ms-erref/705fb797-2175-4a90-b5a3-3918024b10b8" data-linktype="relative-path">2.1.1</a>)
if an error occurs.</p><dl>
<dd>
<table><thead>
  <tr>
   <th>
   <p>Return value/code</p>
   </th>
   <th>
   <p>Description</p>
   </th>
  </tr>
 </thead><tbody><tr>
  <td>0x00000000 S_OK</td>
  <td>Operation successful.</td>
 </tr><tr>
  <td>0x80070057 E_INVALIDARG</td>
  <td>One or more arguments are invalid.</td>
 </tr><tr>
  <td>0xC1FF006F WRM_ERR_ID_VALUE</td>
  <td>The specified name contains characters that are invalid. The name cannot start with a hyphen (&#34;-&#34;) and cannot contain spaces or any of the following characters:   \   / ? * | : &lt; &gt; &#34; , ;.</td>
 </tr><tr>
  <td>0xC1FF0258 WRM_ERR_CAL_DUPLICATE_CALENDAR</td>
  <td>A calendar event with the specified name already exists.</td>
 </tr><tr>
  <td>0xC1FF0259 WRM_ERR_CAL_UNKNOWN_CALENDAR</td>
  <td>The specified calendar event does not exist.</td>
 </tr><tr>
  <td>0xC1FF025A WRM_ERR_CAL_NAME_TOO_LONG</td>
  <td>The calendar name has exceeded an implementation-defined limit.&lt;63&gt;.</td>
 </tr></tbody></table>
</dd></dl><p>Additional <a href="b573c233-e3b6-4179-896f-90a4eb0ca8ff" data-linktype="relative-path">IWRMCalendar</a> interface
methods are specified in section 3.2.4.4.</p></div>