lineSetPreferredOperator
Use the lineSetPreferredOperator function to set or delete a preferred operator. The preferred operator list is stored locally on the phone and automatic registration iterates through this list when attempting to register.
LONG WINAPI lineSetPreferredOperator(
HLINE hLine,
LPLINEOPERATOR lpOperator
);
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 on MSDN. - lpOperator
Points to a LINEOPERATOR structure that provides information about a preferred operator. If the dwIndex member is LINEOPERATOR_USEFIRSTAVAILABLEINDEX, write to first available location. If dwValidParams is LINEOPFORMAT_NONE and dwIndex is not LINEOPERATOR_USEFIRSTAVAILABLEINDEX, erase the operator entry at dwIndex.
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 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.
Note For operator selection, use the numeric ID.
Requirements
Pocket PC: Pocket PC 2002 and later.
Smartphone: Smartphone 2002 and later.
OS Versions: Windows CE 3.0 and later.
Header: Extapi.h.
Library: Cellcore.lib.
See Also
Extended TAPI Functions | LINEOPERATOR
Send Feedback on this topic to the authors