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lineSetCallWaitingState

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Windows Embedded CE 6.0 R3

4/8/2010

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

This is a privileged function.

Not implemented for CDMA.

Requirements

Header extapi.h
Library cellcore.lib
Windows Embedded CE Windows CE 3.0 and later
Windows Mobile Pocket PC 2002 and later, Smartphone 2002 and later

See Also

Reference

Extended TAPI Functions
Barring Modes