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<title>Interface XUnloadingPreference</title>
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<td class="title">interface XUnloadingPreference</td>
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<td><dl>
<dt><b>Description</b></dt>
<dd>Components can implement <code>XUnloadingPreference</code> in order to indicate
 how they should be treated when their hosting library is to be unloaded.

 When someone calls <code>rtl_unloadUnusedModules</code> then the unloading
 listeners are notified by calling previously registered callback
 functions. A listener is an entity that employs, registers, and
 unregisters the callback functions on its behalf. Upon notification
 (the callback function is being called)
 a listener may release references to UNO components. Thus, the
 loaded libraries can be unloaded, if no one else keeps any
 objects from the library alive. <br>
 Before a listener releases references, it should ask for this interface.
 If the interface is not implemented, then the listener may release the
 object; otherwise, it calls <code>releaseOnNotification</code>. If the function
 returns false then the listener should keep the reference, otherwise
 it may release it.
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<td class="imsum_left"><a href="#releaseOnNotification">releaseOnNotification</a></td>
<td class="imsum_right">The return value determines if the object wants to stay
 alive in case of an unloading procedure.
 &nbsp;</td>
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<td class="imdetail"><a name="releaseOnNotification" class="membertitle">releaseOnNotification</a><table border="0" width="96%" cellpadding="5" cellspacing="0" class="table-in-method" bgcolor="#ffffff" align="center">
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<td valign="top" colspan="3">boolean</td>
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<td valign="top"><b>releaseOnNotification</b>();</td>
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<dl>
<dt><b>Description</b></dt>
<dd>The return value determines if the object wants to stay
 alive in case of an unloading procedure.
 </dd>
<dt><b>Returns</b></dt>
<dd><b>false</b>do not release references to this object,otherwise
 <b>true</b>
 </dd>
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