lineGetCallWaitingCaps
Use the lineGetCallWaitingCaps function to retrieve the set of media modes for which call waiting is supported by the radio hardware. The actual set of usable modes may be smaller depending on network capabilities and the provisioning of a particular subscriber.
LONG WINAPI lineGetCallWaitingCaps(
HLINE hLine,
LPDWORD lpdwClasses
);
Parameters
- hLine
The line device handle. The line device handle must have been previously obtained by a call to lineOpen with the proper TAPI device ID specified and a device-specific extension version successfully negotiated with lineNegotiateExtVersion. For more information about lineNegotiateExtVersion and lineOpen, see the TAPI Functions API Reference topics on MSDN. - lpdwClasses
Points to a bit field DWORD that enumerates all supported line capability classes. See the Line Capability Classesconstants for possible values.
Return Values
Returns zero if the function completes successfully, or a negative error number if an error occurs. The following are possible return values:
LINEERR_RESOURCEUNAVAIL
LINEERR_INVALLINEHANDLE
LINEERR_STRUCTURETOOSMALL
LINEERR_INVALPOINTER
LINEERR_UNINITIALIZED
LINEERR_NOMEM
LINEERR_OPERATIONUNAVAIL
LINEERR_OPERATIONFAILED.
Remarks
This function is synchronous. No LINE_REPLY message is sent.
Requirements
Pocket PC: Pocket PC 2002 and later.
Smartphone: Smartphone 2002 and later.
OS Versions: Windows CE 3.0 and later.
Header: Extapi.h.
Library: Cellcore.lib.
See Also
Extended TAPI Functions | Line Capability Classes
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