|Microsoft DirectX 9.0|
The put_SignalQuality method specifies the quality of the signal.
HRESULT put_SignalQuality( LONG lPercentQuality );
[in] Long integer that specifies the quality of the signal as a percentage. 100 indicates best quality and 0 indicates worst quality.
If the method succeeds, it returns S_OK. If it fails, it returns an error code.