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<H1><A NAME="_tapi2_linemessage_str"></A>LINEMESSAGE</H1>
<P>The <B>LINEMESSAGE</B> structure contains parameter values specifying a change in status of the line the application currently has open. The <A HREF="func1_5lid.htm" tppabs="http://msdn.microsoft.com/library/psdk/tapi22/func1_5lid.htm"><B>lineGetMessage</B></A> function returns the <B>LINEMESSAGE</B> structure. </P>
<PRE class=syntax>typedef struct linemessage_tag {
DWORD hDevice;
DWORD dwMessageID;
DWORD_PTR dwCallbackInstance;
DWORD_PTR dwParam1;
DWORD_PTR dwParam2;
DWORD_PTR dwParam3;
} LINEMESSAGE, FAR *LPLINEMESSAGE;</PRE>
<H4>Members</H4>
<DL>
<DT><B>hDevice</B> </DT>
<DD>A handle to either a line device or a call. The nature of this handle (line handle or call handle) can be determined by the context provided by <B>dwMessageID</B>. </DD>
<DT><B>dwMessageID</B> </DT>
<DD>A line or call device message. </DD>
<DT><B>dwCallbackInstance</B> </DT>
<DD>Instance data passed back to the application, which was specified by the application in the <I>dwCallBackInstance</I> parameter of <A HREF="func1_2o54.htm" tppabs="http://msdn.microsoft.com/library/psdk/tapi22/func1_2o54.htm"><B>lineInitializeEx</B></A>. This <B>DWORD</B> is not interpreted by TAPI. </DD>
<DT><B>dwParam1</B> </DT>
<DD>A parameter for the message. </DD>
<DT><B>dwParam2</B> </DT>
<DD>A parameter for the message. </DD>
<DT><B>dwParam3</B> </DT>
<DD>A parameter for the message.
</DD>
</DL>
<H4>Remarks</H4>
<P>For information about parameter values passed in this structure, see <A HREF="msgs_3zcj.htm" tppabs="http://msdn.microsoft.com/library/psdk/tapi22/msgs_3zcj.htm">Line Device Messages</A>. </P>
<H4><A HREF="javascript:if(confirm('http://msdn.microsoft.com/library/psdk/sdkintro/guide_927n.htm \n\n這個文件不能通過 Teleport Pro 取回, 因為 地址在一個域或為它的開始地址設定的邊界的外部路徑上. \n\n你想從服務器打開它嗎?'))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 2.0 or later.<BR>
<B> Header: </B>Declared in Tapi.h.</P>
<H4>See Also</H4>
<P><A HREF="func1_2o54.htm" tppabs="http://msdn.microsoft.com/library/psdk/tapi22/func1_2o54.htm"><B>lineInitializeEx</B></A>, <A HREF="func1_5lid.htm" tppabs="http://msdn.microsoft.com/library/psdk/tapi22/func1_5lid.htm"><B>lineGetMessage</B></A> </P>
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