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<H1><A NAME="_tapi2_linesetcalldata"></A>lineSetCallData</H1>
<P>The <B>lineSetCallData</B> function sets the <B>CallData</B> member in <A HREF="struc1_4oky.htm" tppabs="http://msdn.microsoft.com/library/psdk/tapi22/struc1_4oky.htm"><B>LINECALLINFO</B></A>. Depending on the service provider implementation, the <B>CallData</B> member can be propagated to all applications having handles to the call, including those on other machines (through the server), and can travel with the call when it is transferred. </P>
<PRE class=syntax><B>LONG WINAPI lineSetCallData(
HCALL</B><I> hCall</I><B>, </B>
<B> LPVOID</B><I> lpCallData</I><B>, </B>
<B> DWORD</B><I> dwSize </I>
<B>);</B></PRE>
<H4>Parameters</H4>
<DL>
<DT><I>hCall</I> </DT>
<DD>Handle to the call. The application must have OWNER privilege. </DD>
<DT><I>lpCallData</I> </DT>
<DD>Address of the data to be copied to the <B>CallData</B> member in <A HREF="struc1_4oky.htm" tppabs="http://msdn.microsoft.com/library/psdk/tapi22/struc1_4oky.htm"><B>LINECALLINFO</B></A>, replacing any existing data. </DD>
<DT><I>dwSize</I> </DT>
<DD>Number of bytes of data to be copied. A value of 0 causes any existing data to be removed.
</DD>
</DL>
<H4>Return Values</H4>
<P>Returns a positive request identifier if the asynchronous operation starts; otherwise, the function returns one of these negative error values: </P>
<P>LINEERR_INVALCALLHANDLE, LINEERR_INVALCALLSTATE, LINEERR_INVALPARAM, LINEERR_INVALPOINTER, LINEERR_NOMEM, LINEERR_NOTOWNER, LINEERR_OPERATIONFAILED, LINEERR_OPERATIONUNAVAIL, LINEERR_RESOURCEUNAVAIL, LINEERR_UNINITIALIZED. </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.<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_6gvn.htm" tppabs="http://msdn.microsoft.com/library/psdk/tapi22/quickref_6gvn.htm">Supplementary Line Service Functions</A>, <A HREF="struc1_4oky.htm" tppabs="http://msdn.microsoft.com/library/psdk/tapi22/struc1_4oky.htm"><B>LINECALLINFO</B></A></P>
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