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<H1><A NAME="_tapi2_linedevstatusflags__constants"></A>LINEDEVSTATUSFLAGS_ Constants</H1>
<P>The LINEDEVSTATUSFLAGS_ bit-flag constants describe a collection of Boolean line device status items.
<DL>
<DT>LINEDEVSTATUSFLAGS_CONNECTED </DT>
<DD>Specifies whether the line is connected to TAPI. If TRUE, the line is connected and TAPI is able to operate on the line device. If FALSE, the line is disconnected and the application is unable to control the line device through TAPI. </DD>
<DT>LINEDEVSTATUSFLAGS_INSERVICE </DT>
<DD>Indicates whether the line is in service. If TRUE, the line is in service; if FALSE, the line is out of service. </DD>
<DT>LINEDEVSTATUSFLAGS_LOCKED </DT>
<DD>Indicates whether the line is locked or unlocked. This bit is most often used with line devices associated with cellular phones. Many cellular phones have a security mechanism that requires the entry of a password to enable the phone to place calls. This bit can be used to indicate to applications that the phone is locked and cannot place calls until the password is entered on the user interface of the phone so that the application can present an appropriate alert to the user. </DD>
<DT>LINEDEVSTATUSFLAGS_MSGWAIT </DT>
<DD>Indicates whether the line has a message waiting. If TRUE, a message is waiting; if FALSE, no message is waiting.
</DD>
</DL>
<P>No extensibility. All 32 bits are reserved. </P>
<P>LINEDEVSTATUSFLAGS_ constants are used within the <B>dwDevStatusFlags</B> member of the <A HREF="struc2_40oi.htm" tppabs="http://msdn.microsoft.com/library/psdk/tapi22/struc2_40oi.htm"><B>LINEDEVSTATUS</B></A> data structure. </P>
<H4><A HREF="javascript:if(confirm('http://msdn.microsoft.com/library/psdk/sdkintro/guide_927n.htm \n\n這個(gè)文件不能通過(guò) Teleport Pro 取回, 因?yàn)?地址在一個(gè)域或?yàn)樗拈_始地址設(shè)定的邊界的外部路徑上. \n\n你想從服務(wù)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>
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