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TSPI_lineUncompleteCall function (tspi.h)

  • Article

The TSPI_lineUncompleteCall function is used to cancel the specified call completion request on the specified line.

Syntax

LONG TSPIAPI TSPI_lineUncompleteCall(
  DRV_REQUESTID dwRequestID,
  HDRVLINE      hdLine,
  DWORD         dwCompletionID
);

Parameters

dwRequestID

The identifier of the asynchronous request.

hdLine

The handle to the line on which a call completion is to be canceled.

dwCompletionID

The completion identifier for the request that is to be canceled. TAPI does not validate this parameter when this function is called.

Return value

Returns dwRequestID, or an error number if an error occurs. The lResult actual parameter of the corresponding ASYNC_COMPLETION is zero if the function succeeds, or an error number if an error occurs. Possible return values are as follows:

LINEERR_INVALLINEHANDLE, LINEERR_OPERATIONUNAVAIL, LINEERR_INVALCOMPLETIONID, LINEERR_OPERATIONFAILED, LINEERR_NOMEM, LINEERR_RESOURCEUNAVAIL.

Requirements

Requirement Value
Target Platform Windows
Header tspi.h

See also

ASYNC_COMPLETION

TSPI_lineCompleteCall