|Microsoft DirectX 9.0|
The get_PhysicalChannel method retrieves the physical channel.
HRESULT get_PhysicalChannel( long* pPhysicalChannel );
[out] Pointer to a variable of type long that receives the physical channel.
Returns S_OK if successful. If the method fails, error information can be retrieved using the standard COM IErrorInfo interface.
This is a required property. A tuner cannot locate an ATSC transmission source without it.