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CTransformFilter::CheckConnect

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Microsoft DirectShow 9.0

CTransformFilter::CheckConnect

The CheckConnect method determines whether a pin connection is suitable.

Syntax

  virtual HRESULT CheckConnect(
    PIN_DIRECTION dir,
    IPin *pPin
);

Parameters

dir

Member of the PIN_DIRECTION enumerated type, specifying which pin on the filter is making the connection.

pPin

Pointer to the IPin interface of the other pin in this connection attempt.

Return Value

Returns S_OK.

Remarks

The CTransformInputPin::CheckConnect and CTransformOutputPin::CheckConnect methods call this method during the pin connection process. This method does nothing in the base class. The derived class can override it. For example, the derived class might query the other pin for a particular interface.

Requirements

**  Header:** Declared in Transfrm.h; include Streams.h.

**  Library:** Use Strmbase.lib (retail builds) or Strmbasd.lib (debug builds).

See Also