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lineGetCallStatus

  • Article

This function returns the current status of the specified call.

LONG WINAPI lineGetCallStatus(
  HCALL hCall,
  LPLINECALLSTATUS lpCallStatus 
);

Parameters

  • hCall
    Handle to the call to be queried. The call state of hCall can be any state.
  • lpCallStatus
    Pointer to a variably sized data structure of type LINECALLSTATUS. Upon successful completion of the request, this structure is filled with call status information. Prior to calling lineGetCallStatus, the application should set the dwTotalSize member of this structure to indicate the amount of memory available to TAPI for returning information.

Return Values

Returns zero if the request succeeds or a negative error number if an error occurs. The following table shows the return values for this function.

Value Description
LINEERR_INVALCALLHANDLE The handle to the call is invalid.
LINEERR_RESOURCEUNAVAIL The resources are unavailable.
LINEERR_INVALPOINTER The pointer is invalid.
LINEERR_STRUCTURETOOSMALL The structure is too small.
LINEERR_NOMEM Not enough memory is available.
LINEERR_UNINITIALIZED A parameter is uninitialized.
LINEERR_OPERATIONFAILED The operation failed.
LINEERR_OPERATIONUNAVAIL The operation is unavailable.

Remarks

The lineGetCallStatus function returns the dynamic status of a call, whereas the lineGetCallInfo function returns primarily static information about a call. Call status information includes the current call state, detailed mode information related to the call while in this state (if any), as well as a list of the available API functions the application can invoke on the call while the call is in this state. An application would typically be interested in requesting this information when it receives notification about a call state change by the LINE_CALLSTATE message.

Note   This function is for TAPI version 2.0 and later.

Requirements

OS Versions: Windows CE 1.0 and later.
Header: Tapi.h.
Link Library: Coredll.lib.

See Also

lineGetCallInfo | LINE_CALLSTATE

 Last updated on Saturday, April 10, 2004

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