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<H1><A NAME="_tapi2_phonecaps_str"></A>PHONECAPS</H1>
<P>The <B>PHONECAPS</B> structure describes the capabilities of a phone device. The <A HREF="func2_3l6b.htm" tppabs="http://msdn.microsoft.com/library/psdk/tapi22/func2_3l6b.htm"><B>phoneGetDevCaps</B></A> and <A HREF="javascript:if(confirm('http://msdn.microsoft.com/library/psdk/tspi21/func3_67ar.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/func3_67ar.htm'" tppabs="http://msdn.microsoft.com/library/psdk/tspi21/func3_67ar.htm"><B>TSPI_phoneGetDevCaps</B></A> functions return this structure.</P>
<PRE class=syntax>typedef struct phonecaps_tag {
DWORD dwTotalSize;
DWORD dwNeededSize;
DWORD dwUsedSize;
DWORD dwProviderInfoSize;
DWORD dwProviderInfoOffset;
DWORD dwPhoneInfoSize;
DWORD dwPhoneInfoOffset;
DWORD dwPermanentPhoneID;
DWORD dwPhoneNameSize;
DWORD dwPhoneNameOffset;
DWORD dwStringFormat;
DWORD dwPhoneStates;
DWORD dwHookSwitchDevs;
DWORD dwHandsetHookSwitchModes;
DWORD dwSpeakerHookSwitchModes;
DWORD dwHeadsetHookSwitchModes;
DWORD dwVolumeFlags;
DWORD dwGainFlags;
DWORD dwDisplayNumRows;
DWORD dwDisplayNumColumns;
DWORD dwNumRingModes;
DWORD dwNumButtonLamps;
DWORD dwButtonModesSize;
DWORD dwButtonModesOffset;
DWORD dwButtonFunctionsSize;
DWORD dwButtonFunctionsOffset;
DWORD dwLampModesSize;
DWORD dwLampModesOffset;
DWORD dwNumSetData;
DWORD dwSetDataSize;
DWORD dwSetDataOffset;
DWORD dwNumGetData;
DWORD dwGetDataSize;
DWORD dwGetDataOffset;
DWORD dwDevSpecificSize;
DWORD dwDevSpecificOffset;
DWORD dwDeviceClassesSize; //TAPI 2.0
DWORD dwDeviceClassesOffset; //TAPI 2.0
DWORD dwPhoneFeatures; //TAPI 2.0
DWORD dwSettableHandsetHookSwitchModes; //TAPI 2.0
DWORD dwSettableSpeakerHookSwitchModes; //TAPI 2.0
DWORD dwSettableHeadsetHookSwitchModes; //TAPI 2.0
DWORD dwMonitoredHandsetHookSwitchModes; //TAPI 2.0
DWORD dwMonitoredSpeakerHookSwitchModes; //TAPI 2.0
DWORD dwMonitoredHeadsetHookSwitchModes; //TAPI 2.0
GUID PermanentPhoneGuid; //TAPI 2.2
} PHONECAPS, FAR *LPPHONECAPS; </PRE>
<H4>Members</H4>
<DL>
<DT><B>dwTotalSize</B> </DT>
<DD>The total size, in bytes, allocated to this data structure. </DD>
<DT><B>dwNeededSize</B> </DT>
<DD>The size, in bytes, for this data structure that is needed to hold all the returned information. </DD>
<DT><B>dwUsedSize</B> </DT>
<DD>The size, in bytes, of the portion of this data structure that contains useful information. </DD>
<DT><B>dwProviderInfoSize</B> </DT>
<DT><B>dwProviderInfoOffset</B> </DT>
<DD>The size, in bytes, of the variably sized field containing service provider-specific information, and the offset, in bytes, from the beginning of this data structure.
<P>The <B>dwProviderInfoSize/Offset</B> member provides information about the provider hardware and/or software, such as the vendor name and version numbers of hardware and software. This information can be useful when a user needs to call customer service with problems regarding the provider.
</DD>
<DT><B>dwPhoneInfoSize</B> </DT>
<DT><B>dwPhoneInfoOffset</B> </DT>
<DD>The size, in bytes, of the variably sized device field containing phone-specific information, and the offset, in bytes, from the beginning of this data structure.
<P>The <B>dwPhoneInfoSize/Offset</B> member provides information about the attached phone device, such as the phone device manufacturer, the model name, the software version, and so on. This information can be useful when a user needs to call customer service with problems regarding the phone.
</DD>
<DT><B>dwPermanentPhoneID</B> </DT>
<DD>The permanent <B>DWORD</B> identifier by which the phone device is known in the system's configuration. </DD>
<DT><B>dwPhoneNameSize</B> </DT>
<DT><B>dwPhoneNameOffset</B> </DT>
<DD>The size, in bytes, of the variably sized device field containing a user configurable name for this phone device, and the offset, in bytes, from the beginning of this data structure This name can be configured by the user when configuring the phone device's service provider and is provided for the user's convenience. </DD>
<DT><B>dwStringFormat</B> </DT>
<DD>The string format to be used with this phone device. This member uses one of the <A HREF="constnts_1cab.htm" tppabs="http://msdn.microsoft.com/library/psdk/tapi22/constnts_1cab.htm">STRINGFORMAT_ Constants</A>. </DD>
<DT><B>dwPhoneStates</B> </DT>
<DD>The state changes for this phone device for which the application can be notified in a <A HREF="msgs_3f8l.htm" tppabs="http://msdn.microsoft.com/library/psdk/tapi22/msgs_3f8l.htm">PHONE_STATE</A> message. This member one or more of the <A HREF="constnts_3s37.htm" tppabs="http://msdn.microsoft.com/library/psdk/tapi22/constnts_3s37.htm">PHONESTATE_ Constants</A>. </DD>
<DT><B>dwHookSwitchDevs</B> </DT>
<DD>Specifies the phone's hookswitch devices. This member uses one of the <A HREF="constnts_3tgz.htm" tppabs="http://msdn.microsoft.com/library/psdk/tapi22/constnts_3tgz.htm">PHONEHOOKSWITCHDEV_ Constants</A>. </DD>
<DT><B>dwHandsetHookSwitchModes</B> </DT>
<DT><B>dwSpeakerHookSwitchModes</B> </DT>
<DT><B>dwHeadsetHookSwitchModes</B> </DT>
<DD>Specifies the phone's hookswitch mode capabilities of the handset, speaker, or headset, respectively. The member is only meaningful if the hookswitch device is listed in <B>dwHookSwitchDevs</B>. This member uses one of the <A HREF="constnts_0yyc.htm" tppabs="http://msdn.microsoft.com/library/psdk/tapi22/constnts_0yyc.htm">PHONEHOOKSWITCHMODE_ Constants</A>. </DD>
<DT><B>dwVolumeFlags</B> </DT>
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