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IMSVidAnalogTuner::ChannelAvailable

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Microsoft DirectShow 9.0

IMSVidAnalogTuner::ChannelAvailable

This topic applies to Windows XP or later.

The ChannelAvailable method queries whether a specified channel is available for viewing.

This method is currently not supported.

Syntax

  HRESULT ChannelAvailable(
  
  long
  
  nChannel
  ,
  
  long*
  
  SignalStrength
  ,
  
  VARIANT_BOOL*
  
  fSignalPresent
  
  );

Parameters

  nChannel

[in]  Integer containing the channel.

  pSignalStrength

[in, out]  SPointer to a long value that specifies the signal strength.

  pfSignalPresent

[out] Pointer to a VARIANT_BOOL flag that indicates whether a signal is present.

Return Values

If the method succeeds, it returns S_OK. If it fails, it returns an error code.

Requirements

  Header: Dshow.h.

  Library: Quartz.dll.

See Also