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<H1><A NAME="_tapi2_linegetcallstatus"></A>lineGetCallStatus</H1>
<P>The <B>lineGetCallStatus</B> function returns the current status of the specified call. </P>
<PRE class=syntax><B>LONG WINAPI lineGetCallStatus(
HCALL</B><I> hCall</I><B>, </B>
<B> LPLINECALLSTATUS</B><I> lpCallStatus </I>
<B>);</B></PRE>
<H4>Parameters</H4>
<DL>
<DT><I>hCall</I> </DT>
<DD>A handle to the call to be queried. The call state of <I>hCall</I> can be any state. </DD>
<DT><I>lpCallStatus</I> </DT>
<DD>A pointer to a variably sized data structure of type <A HREF="struc1_7vxu.htm" tppabs="http://msdn.microsoft.com/library/psdk/tapi22/struc1_7vxu.htm"><B>LINECALLSTATUS</B></A>. Upon successful completion of the request, this structure is filled with call status information. Prior to calling <B>lineGetCallStatus</B>, the application should set the <B>dwTotalSize</B> member of this structure to indicate the amount of memory available to TAPI for returning information.
</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_INVALCALLHANDLE, LINEERR_RESOURCEUNAVAIL, LINEERR_INVALPOINTER, LINEERR_STRUCTURETOOSMALL, LINEERR_NOMEM, LINEERR_UNINITIALIZED, LINEERR_OPERATIONFAILED, LINEERR_OPERATIONUNAVAIL.</P>
<H4>Remarks</H4>
<P>The <B>lineGetCallStatus</B> function returns the dynamic status of a call, whereas <A HREF="func1_96cv.htm" tppabs="http://msdn.microsoft.com/library/psdk/tapi22/func1_96cv.htm"><B>lineGetCallInfo</B></A> returns primarily static information about a call. Call status information includes the current call state, detailed mode information related to the call while in this state (if any), as well as a list of the available API functions the application can invoke on the call while the call is in this state. An application would typically be interested in requesting this information when it receives notification about a call state change by the LINE_CALLSTATE message. </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 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_1xid.htm" tppabs="http://msdn.microsoft.com/library/psdk/tapi22/msgs_1xid.htm">LINE_CALLSTATE</A>, <A HREF="struc1_7vxu.htm" tppabs="http://msdn.microsoft.com/library/psdk/tapi22/struc1_7vxu.htm"><B>LINECALLSTATUS</B></A>, <A HREF="func1_96cv.htm" tppabs="http://msdn.microsoft.com/library/psdk/tapi22/func1_96cv.htm"><B>lineGetCallInfo</B></A></P>
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