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<H1><A NAME="_tapi2_linegeneratetone_str"></A>LINEGENERATETONE</H1>
<P>The <B>LINEGENERATETONE</B> structure contains information about a tone to be generated. This structure is used by the <A HREF="func1_23xh.htm" tppabs="http://msdn.microsoft.com/library/psdk/tapi22/func1_23xh.htm"><B>lineGenerateTone</B></A> and <A HREF="javascript:if(confirm('http://msdn.microsoft.com/library/psdk/tspi21/func1_9ftx.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/tspi21/func1_9ftx.htm'" tppabs="http://msdn.microsoft.com/library/psdk/tspi21/func1_9ftx.htm"><B>TSPI_lineGenerateTone</B></A> functions.</P>
<PRE class=syntax>typedef struct linegeneratetone_tag {
DWORD dwFrequency;
DWORD dwCadenceOn;
DWORD dwCadenceOff;
DWORD dwVolume;
} LINEGENERATETONE, FAR *LPLINEGENERATETONE; </PRE>
<H4>Members</H4>
<DL>
<DT><B>dwFrequency</B> </DT>
<DD>The frequency, in hertz, of this tone component. A service provider may adjust (round up or down) the frequency specified by the application to fit its resolution. </DD>
<DT><B>dwCadenceOn</B> </DT>
<DD>The "on" duration, in milliseconds, of the cadence of the custom tone to be generated. Zero means no tone is generated. </DD>
<DT><B>dwCadenceOff</B> </DT>
<DD>The "off" duration, in milliseconds, of the cadence of the custom tone to be generated. Zero means no off time, that is, a constant tone. </DD>
<DT><B>dwVolume</B> </DT>
<DD>The volume level at which the tone is to be generated. A value of 0x0000FFFF represents full volume, and a value of 0x00000000 is silence.
</DD>
</DL>
<H4>Remarks</H4>
<P>This structure may not be extended. </P>
<P>This structure is used only for the generation of tones. It is not used for tone monitoring. </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 1.4 or later.<BR>
<B> Header: </B>Declared in Tapi.h.</P>
<H4>See Also</H4>
<P><A HREF="func1_23xh.htm" tppabs="http://msdn.microsoft.com/library/psdk/tapi22/func1_23xh.htm"><B>lineGenerateTone</B></A>, <A HREF="javascript:if(confirm('http://msdn.microsoft.com/library/psdk/tspi21/func1_9ftx.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/tspi21/func1_9ftx.htm'" tppabs="http://msdn.microsoft.com/library/psdk/tspi21/func1_9ftx.htm"><B>TSPI_lineGenerateTone</B></A></P>
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