<HTML><BODY style="word-wrap: break-word; -khtml-nbsp-mode: space; -khtml-line-break: after-white-space; "><FONT class="Apple-style-span" face="Verdana" size="3"><SPAN class="Apple-style-span" style="font-size: 11.2px;">If the mutex is a named mutex and the object existed before this function call, the return value is a handle to the existing object, </SPAN></FONT><FONT class="Apple-style-span" face="Verdana" size="3"><SPAN class="Apple-style-span" style="font-size: 11.2px;"><B>GetLastError</B></SPAN></FONT><FONT class="Apple-style-span" face="Verdana" size="3"><SPAN class="Apple-style-span" style="font-size: 11.2px;"> returns ERROR_ALREADY_EXISTS</SPAN></FONT><DIV><FONT class="Apple-style-span" face="Verdana" size="3"><SPAN class="Apple-style-span" style="font-size: 11.2px;"><BR class="khtml-block-placeholder"></SPAN></FONT></DIV><DIV><FONT class="Apple-style-span" face="Verdana" size="3"><SPAN class="Apple-style-span" style="font-size: 11.2px;">--</SPAN></FONT></DIV><DIV><FONT class="Apple-style-span" face="Verdana" size="3"><SPAN class="Apple-style-span" style="font-size: 11.2px;">Best regards,</SPAN></FONT></DIV><DIV><FONT class="Apple-style-span" face="Verdana" size="3"><SPAN class="Apple-style-span" style="font-size: 11.2px;">Alex Ionescu</SPAN></FONT></DIV><DIV><FONT class="Apple-style-span" face="Verdana" size="3"><SPAN class="Apple-style-span" style="font-size: 11.2px;"><BR></SPAN></FONT><DIV><DIV>On 17-Sep-07, at 10:41 PM, <A href="mailto:silverblade@svn.reactos.org">silverblade@svn.reactos.org</A> wrote:</DIV></DIV><BR></DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">+ device_list_mutex = CreateMutex(NULL, FALSE, DEVICE_LIST_MUTEX_NAME);</DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">+</DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">+ if ( ! device_list_mutex)</DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">+ {</DIV></BODY></HTML>