lineSetCallWaitingState (Compact 2013)

  • Article

3/26/2014

Use the lineSetCallWaitingState function to set call waiting for a given set of media modes.

Syntax

LONG WINAPI lineSetCallWaitingState (
  HLINE hLine,
  DWORD dwClasses,
  DWORD dwState
);

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.
  • dwClasses
    Indicates which line capability classes to enable or disable. See the Line Capability Classes constants for possible values.

  • dwState
    Points to a DWORD indicating the call waiting state. Possible values are listed in the following table.

    Value

    Description

    LINECALLWAITING_ENABLED

    Call waiting is enabled.

    LINECALLWAITING_DISABLED

    Call waiting is disabled.

Return Value

Returns a positive request identifier if the function is completed asynchronously, or a negative error number if an error occurs. The dwParam2 parameter of the corresponding LINE_REPLY message is zero if the function succeeds or it is a negative error number if an error occurs. The following are possible return values:

  • LINEERR_INVALLINEHANDLE
  • LINEERR_NOMEM
  • LINEERR_OPERATIONUNAVAIL
  • LINEERR_OPERATIONFAILED
  • LINEERR_RESOURCEUNAVAIL
  • LINEERR_INVALPOINTER
  • LINEERR_INVALPARAM
  • LINEERR_UNINITIALIZED

Remarks

Not implemented for CDMA.

Requirements

Header

extapi.h

Library

cellcore.lib

See Also

Reference

Extended TAPI Functions
Barring Modes