lineGetCallWaitingState

  • Article

Use the lineGetCallWaitingState function to retrieve the list of media modes for which call waiting is enabled.

LONG WINAPI lineGetCallWaitingState(
  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 in the Windows CE SDK.
  • lpdwClasses
    Points to a bit field DWORD that enumerates the set of supported line capability types. See the Line Capability Classes constants for possible values.

Return Values

The lineGetCallWaitingState function returns zero if the function completed successfully, and returns 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. Not implemented for CDMA.

Requirements

Pocket PC Platforms: Pocket PC 2002 and later
OS Versions: Windows CE 3.0 and later
Header: extapi.h
Library: cellcore.lib

See Also

Line Capability Classes

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