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<H1><A NAME="_tapi2_linesetstatusmessages"></A>lineSetStatusMessages</H1>
<P>The <B>lineSetStatusMessages</B> function enables an application to specify which notification messages to receive for events related to status changes for the specified line or any of its addresses. </P>
<PRE class=syntax><B>LONG WINAPI lineSetStatusMessages(
HLINE</B><I> hLine</I><B>, </B>
<B> DWORD</B><I> dwLineStates</I><B>, </B>
<B> DWORD</B><I> dwAddressStates </I>
<B>);</B></PRE>
<H4>Parameters</H4>
<DL>
<DT><I>hLine</I> </DT>
<DD>A handle to the line device. </DD>
<DT><I>dwLineStates</I> </DT>
<DD>A bit array that identifies for which line-device status changes a message is to be sent to the application. This parameter uses one or more of the <A HREF="constnts_0prn.htm" tppabs="http://msdn.microsoft.com/library/psdk/tapi22/constnts_0prn.htm">LINEDEVSTATE_ Constants</A>. </DD>
<DT><I>dwAddressStates</I> </DT>
<DD>A bit array that identifies for which address status changes a message is to be sent to the application. This parameter uses one or more of the <A HREF="constnts_85bn.htm" tppabs="http://msdn.microsoft.com/library/psdk/tapi22/constnts_85bn.htm">LINEADDRESSSTATE_ Constants</A>.
</DD>
</DL>
<H4>Return Values</H4>
<P>Returns zero if the request succeeds or a negative error number if an error occurs. Possible return values are: </P>
<P>LINEERR_INVALADDRESSSTATE, LINEERR_OPERATIONFAILED, LINEERR_INVALLINEHANDLE, LINEERR_RESOURCEUNAVAIL, LINEERR_INVALLINESTATE, LINEERR_UNINITIALIZED, LINEERR_NOMEM, LINEERR_OPERATIONUNAVAIL.</P>
<H4>Remarks</H4>
<P>TAPI defines a number of messages that notify applications about events occurring on lines and addresses. An application may not be interested in receiving all address and line status change messages. The <B>lineSetStatusMessages</B> function can be used to select which messages the application receives. By default, address and line status reporting is disabled. </P>
<H4><A HREF="javascript:if(confirm('http://msdn.microsoft.com/library/psdk/sdkintro/guide_927n.htm \n\n这个文件不能通过 Teleport Pro 取回, 因为 地址在一个域或为它的开始地址设定的边界的外部路径上. \n\n你想从服务器打开它吗?'))window.location='http://msdn.microsoft.com/library/psdk/sdkintro/guide_927n.htm'" tppabs="http://msdn.microsoft.com/library/psdk/sdkintro/guide_927n.htm">Requirements</A> </H4>
<P><B> Windows NT/2000: </B>Requires Windows NT 4.0 SP3 or later.<BR>
<B> Windows 95/98: </B>Requires Windows 95 or later.<BR>
<B> Version: </B>Requires TAPI 1.3 or later.<BR>
<B> Header: </B>Declared in Tapi.h.<BR>
<B> Library: </B>Use Tapi32.lib.</P>
<H4>See Also</H4>
<P><A HREF="quickref_1okl.htm" tppabs="http://msdn.microsoft.com/library/psdk/tapi22/quickref_1okl.htm">TAPI 2.2 Reference Overview</A>, <A HREF="quickref_1pnp.htm" tppabs="http://msdn.microsoft.com/library/psdk/tapi22/quickref_1pnp.htm">Basic Telephony Services Reference</A>, <A HREF="msgs_1hyd.htm" tppabs="http://msdn.microsoft.com/library/psdk/tapi22/msgs_1hyd.htm">LINE_CLOSE</A>, <A HREF="msgs_402t.htm" tppabs="http://msdn.microsoft.com/library/psdk/tapi22/msgs_402t.htm">LINE_LINEDEVSTATE</A>, <A HREF="func1_26lh.htm" tppabs="http://msdn.microsoft.com/library/psdk/tapi22/func1_26lh.htm"><B>lineInitialize</B></A>, <A HREF="func1_2o54.htm" tppabs="http://msdn.microsoft.com/library/psdk/tapi22/func1_2o54.htm"><B>lineInitializeEx</B></A>, <A HREF="func2_34by.htm" tppabs="http://msdn.microsoft.com/library/psdk/tapi22/func2_34by.htm"><B>lineOpen</B></A></P>
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