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10/16/2008
This method requests tuning data from the MSN Direct receiver. Tuning data includes strength, frequency, and signal status.
Syntax
int GetTuningData();
Parameters
None.
Return Value
Returns the transaction ID of the request that is sent to the MSN Direct receiver; returns -1 if the request fails.
Remarks
The GetTuningData method uses RequestSync to perform the transaction, with TUNING_DATA specified as the applicationType parameter.
If the MSN Direct service type is TUNING_DATA, then the incoming message from the MSN Direct receiver is a tuning-status message returned as a TuningDataMsg object instance on a ProcessInMessageFromReceiver call. The MsgFromReceiver::GetApplicationType method must be called to verify for errors. In case of an error, the GetApplicationType method will return PROTOCOL_ERROR. Otherwise, the GetApplicationType method will return TUNING_DATA. In this case, the messageFromReceiver parameter must be typecast to a TuningDataMsg object and processed accordingly.
Requirements
| Header | DBR701.h |
| Library | DBRLib.lib |
| Windows Embedded CE | Windows CE 5.0, Windows Embedded NavReady 2009 |
See Also
Reference
DBR701::GetSubscriberStatus
DBR701 Class
MSN Direct Services Classes