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Reconnects the input or output pin if necessary.
HRESULT CompleteConnect( PIN_DIRECTION direction, IPin *pReceivePin );
Parameters
- direction
- Pin direction.
- pReceivePin
- Pointer to the output pin to which to connect.
Return Values
Returns NOERROR if successful; otherwise, returns VFW_E_NOT_IN_GRAPHif the filter is not part of a graph, or returns an HRESULTthat indicates the error. HRESULTcan be one of the following standard constants, or other values not listed.
E_FAIL Failure. E_POINTER Null pointer argument. E_INVALIDARG Invalid argument. E_NOTIMPL Method isn't supported. Remarks
This member function overrides the CTransformFilter::CompleteConnectmember function. It is called by one of the pin classes at the end of a successful connection. Because the input and output pins must both use the same allocator, this member function reconnects the opposite pin if necessary.
When the input pin is first connected, the output pin has not yet been connected and the downstream filter's allocator is unknown, so the allocator for the input pin is chosen to be the upstream pin's allocator. When the transform filter's output pin is connected, however, it has access to the downstream filter's allocator and should force a reconnect on the input pin and offer that allocator. When the input pin is reconnected, it forces a reconnect on the output pin if the allocator chosen for the input pin's connection differs from the output pin's connection. This member function supplies the reconnection for either output or input pins.