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Informs the derived class when the connection process is starting.
virtual HRESULT CheckConnect( PIN_DIRECTION dir, IPin * pPin );
Parameters
- dir
- Direction of the pin.
- pPin
- Pointer to the pin making the connection.
Return Values
Returns NOERROR by default. The overriding member function returns an HRESULTvalue.
Remarks
This member function is called by both CTransformInputPin::CheckConnectand CTransformOutputPin::CheckConnect. Override this member function to handle special cases in both input and output pin connections. Special cases might include querying (obtaining) other interfaces.