lineBlindTransfer

  • 项目

This function performs a blind or single-step transfer of the specified call to the specified destination address.

LONG WINAPI lineBlindTransfer(
  HCALL hCall,
  LPCWSTR lpszDestAddress,
  DWORD dwCountryCode 
);

Parameters

  • hCall
    Handle to the call to be transferred. The application must be an owner of this call. The call state of hCall must be connected.
  • lpszDestAddress
    Pointer to a null-terminated string identifying where the call is to be transferred to. The destination address uses the standard dialable number format.
  • dwCountryCode
    Country/region code of the destination. This is used by the implementation to select the call progress protocols for the destination address. If a value of zero is specified, a default call-progress protocol defined by the service provider is used.

Return Values

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 table shows the return values for this function.

Value Description
LINEERR_INVALCALLHANDLE The handle to the call is invalid.
LINEERR_INVALCOUNTRYCODE The destination country/region code is invalid.
LINEERR_INVALCALLSTATE The state of hCall is not connected.
LINEERR_INVALPOINTER The pointer is invalid.
LINEERR_NOMEM Not enough memory is available.
LINEERR_OPERATIONUNAVAIL The operation is unavailable.
LINEERR_NOTOWNER The application is not the owner of this call.
LINEERR_RESOURCEUNAVAIL The resources are unavailable.
LINEERR_INVALADDRESS The destination address is invalid.
LINEERR_UNINITIALIZED A parameter is uniinitialized.
LINEERR_ADDRESSBLOCKED The destination address is blocked.
LINEERR_OPERATIONFAILED The operation failed.

Remarks

If LINEERR_INVALADDRESS is returned, no dialing occurs.

Blind transfer differs from a consultation transfer in that no consultation call is made visible to the application. After the blind transfer successfully completes, the specified call is typically cleared from the application's line, and it transitions to the idle state.

The application's call handle remains valid after the transfer has completed. The application must deallocate its handle using the lineDeallocateCall function when it is no longer interested in the transferred call.

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

lineDeallocateCall | LINE_REPLY

 Last updated on Saturday, April 10, 2004

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