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<td class="paramtype">QIODevice&nbsp;</td>
<td class="paramname"><em>dev</em></td>
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<td>)</td>
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<div class="memdoc"><p>Can be called by derived classes in order to set the underlying device.
Note that KArchive will -not- own the device, it must be deleted by the derived class.
</p></div></div><a class="anchor" name="setRootDir"></a>
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