TSPI_phoneGetDevCaps

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Windows Embedded CE 6.0 R3

4/8/2010

This function queries a specified phone device to determine its telephony capabilities.

Syntax

LONG TSPIAPI TSPI_phoneGetDevCaps(
  DWORD dwDeviceID, 
  DWORD dwTSPIVersion, 
  DWORD dwExtVersion,  
  LPPHONECAPS lpPhoneCaps 
);

Parameters

• dwDeviceID
  Phone device to be queried.

• dwTSPIVersion
  Negotiated TSPI version number. This value is negotiated for this device through the TSPI_phoneNegotiateTSPIVersion function.

• dwExtVersion
  Negotiated extension version number. This value is negotiated for this device through the TSPI_phoneNegotiateExtVersion function.

• lpPhoneCaps
  Pointer to memory into which the service provider writes a variably sized structure of type PHONECAPS. Upon successful completion of the request, this structure is filled with phone device capability information. Prior to calling TSPI_phoneGetDevCaps, the application sets the dwTotalSize member of this structure to indicate the amount of memory available to TAPI for returning information.

Return Value

Returns zero if the function succeeds, or an error number if an error occurs. The following table shows the return values for this method.

Remarks

If dwExtVersion is zero, no extension information is requested. If it is nonzero, it holds a value that has already been negotiated for this device with the TSPI_phoneNegotiateExtVersion function. The service provider fills in device- and vendor-specific extended information according to the extension version specified.

After the service provider returns from the TSPI_phoneGetDevCaps function, TAPI sets the dwPhoneStates member of the PHONECAPS structure as follows.

PHONECAPS.dwPhoneStates |=
  PHONESTATE_OWNER |
  PHONESTATE_MONITORS |
  PHONESTATE_REINIT;

Requirements

See Also

Reference

TSPI_phoneNegotiateExtVersion