lineGetOperatorStatus

  • Article

Use the lineGetOperatorStatus function to retrieve the lists of preferred and available operators. The preferred operator list is stored locally on the device and automatic registration iterates through this list when attempting to register. The available list shows which network operators are currently in range of the device. To obtain the current operator, use lineGetCurrentOperator.

LONG WINAPI lineGetOperatorStatus(
  HLINE hLine,
  LPLINEOPERATORSTATUS lpOperatorStatus
);

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. For more information about lineNegotiateExtVersion and lineOpen, see the TAPI Functions API Reference topics in the Windows CE SDK.
  • lpOperatorStatus
    Points to a variably sized data structure of type LINEOPERATORSTATUS. See the LINEOPERATOR structure for possible values. For more details, see TAPI Memory Allocation at Microsoft MSDN® Online.

Return Values

The lineGetOperatorStatus function returns zero if the function completed successfully, and returns a negative error number if an error occurs.

Otherwise, the lineGetOperatorStatus function returns one of the possible return values:

LINEERR_RESOURCEUNAVAIL
LINEERR_INVALLINEHANDLE
LINEERR_STRUCTURETOOSMALL
LINEERR_INVALPOINTER
LINEERR_UNINITIALIZED
LINEERR_NOMEM
LINEERR_OPERATIONUNAVAIL
LINEERR_OPERATIONFAILED

This is followed by a list of LINEOPERATOR structures representing the preferred and available operators.

Remarks

Prior to first calling lineGetOperatorStatus, the application should set the dwTotalSize member of the LINEOPERATORSTATUS structure passed as the lpOperatorStatus parameter to zero. This will return the size, in bytes, of memory needed to store the data returned by subequently calling this function.

This function is synchronous. No LINE_REPLY message is sent and the application can use the contents of the parameter structures immediately after this function returns. Not implemented for CDMA.

Requirements

Pocket PC Platforms: Pocket PC 2002 and later
OS Versions: Windows CE 3.0 and later
Header: extapi.h
Library: cellcore.lib

See Also

lineGetCurrentOperator

LINEOPERATOR

LINEOPERATORSTATUS

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