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lineGetAddressCaps (Windows CE 5.0)

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This function queries the specified address on the specified line device to determine its telephony capabilities.

LONG WINAPI lineGetAddressCaps(HLINEAPP hLineApp,DWORD dwDeviceID,DWORD dwAddressID,DWORD dwAPIVersion,DWORD dwExtVersion,LPLINEADDRESSCAPS lpAddressCaps);

Parameters

  • hLineApp
    Handle to the application's registration with TAPI.
  • dwDeviceID
    Line device containing the address to be queried.
  • dwAddressID
    Address on the given line device whose capabilities are to be queried. An address identifier is permanently associated with an address; the identifier remains constant across operating system upgrades.
  • dwAPIVersion
    Version number of the Telephony API to be used. The high-order word contains the major version number; the low-order word contains the minor version number. This number is obtained using the lineNegotiateAPIVersion function.
  • dwExtVersion
    Version number of the service provider-specific extensions to be used. This number can be set to zero if no device-specific extensions are to be used. Otherwise, the high-order word contains the major version number; and the low-order word contains the minor version number.
  • lpAddressCaps
    Pointer to a variably sized structure of type LINEADDRESSCAPS. Upon successful completion of the request, this structure is filled with address capabilities information. Prior to calling lineGetAddressCaps, the application should set the dwTotalSize member of this structure to indicate the amount of memory available to TAPI for returning information.

Return Values

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

Value Description
LINEERR_BADDEVICEID The deviceidentifier is incorrect.
LINEERR_NOMEM Not enough memory is available.
LINEERR_INCOMPATIBLEAPIVERSION The telephony API version is incompatible.
LINEERR_OPERATIONFAILED The operation failed.
LINEERR_INCOMPATIBLEEXTVERSION The extension version is incompatible.
LINEERR_RESOURCEUNAVAIL The resources are unavailable.
LINEERR_INVALADDRESSID The address identifier is invalid.
LINEERR_STRUCTURETOOSMALL The structure is too small.
LINEERR_INVALAPPHANDLE The handle to the applications registration with TAPI is invalid.
LINEERR_UNINITIALIZED A parameter is uninitialized.
LINEERR_INVALPOINTER The pointer is invalid.
LINEERR_OPERATIONUNAVAIL The operation is unavailable.
LINEERR_NODRIVER The driver was not found.
LINEERR_NODEVICE The device was not found.

Remarks

Valid address identifiers range from zero to one less than the number of addresses returned by the lineGetDevCaps function. The version number to be supplied is the version number that was returned as part of the line's device capabilities by lineGetDevCaps.

Note   This function is for TAPI version 2.0 and later.

Requirements

OS Versions: Windows CE 1.0 and later.
Header: Tapi.h.
Link Library: Coredll.lib.

See Also

lineGetDevCaps | lineNegotiateAPIVersion

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