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IGraphBuilder::Connect method

Applies to: desktop apps only

The Connect method connects the two pins, using intermediates if necessary.

Syntax

Copy

HRESULT Connect(
  [in]  IPin *ppinOut,
  [in]  IPin *ppinIn
);

Parameters

ppinOut [in]: Pointer to the IPin interface on the output pin.
ppinIn [in]: Pointer to the IPin interface on the input pin.

Return value

Returns an HRESULT. Possible values include the following.

Return code	Description
S_OK	Success.
VFW_S_PARTIAL_RENDER	Partial success; some of the streams from this pin use an unsupported format.
E_ABORT	Operation aborted.
E_POINTER	NULL pointer argument.
VFW_E_CANNOT_CONNECT	No combination of intermediate filters could be found to make the connection.
VFW_E_NOT_IN_GRAPH	At least one of the filters is not in the filter graph.

Remarks

This method connects two pins directly or indirectly, adding intermediate filters if necessary. The method starts by attempting a direct connection. If that fails, it tries to use any filters that are already in the filter graph and have unconnected input pins. (It enumerates these in an arbitrary order.) If that fails, it searches for filters in the registry, and tries them in order of merit. For more information, see Intelligent Connect.

During the connection process, the Filter Graph Manager ignores pins on intermediate filters if the pin name begins with a tilde (~). For more information, see PIN_INFO.

Requirements