efix nowrap>ref&nbsp;</td><td class=PType nowrap>KEY&nbsp;</td><td class=PParameter nowrap>key</td><td class=PAfterParameters nowrap>)</td></tr></table></td></tr></table></blockquote><div class=CBody><p>Returns the key of the next item in the pool.</p><p>If the input <i>key</i> is the last key in the pool, then <i>key</i> is left unchanged and 0 is returned.</p><p>If a next key is found, then <i>key</i> is updated with that key and 1 is returned.</p></div></div></div>




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