lineGetCallWaitingState

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Windows Embedded CE 6.0 R3

4/8/2010

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

Syntax

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.

• lpdwClasses
  Points to a DWORD indicating which line capability classes are enabled for call waiting. See the Line Capability Classes constants for possible values.

Return Value

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. Not implemented for CDMA.

Requirements

See Also

Reference

Extended TAPI Functions
Line Capability Classes